0.14.14: Misc bugfixes in migrations & AsyncCollection keys

- Create migration directives & migrators
- Modify Cache classes to support array manipulation
- Create Redis unit and RedisCache implementation
- Create Queueable base class and Queue class that uses Cache backend

.drone.yml

@@ -1,219 +1,87 @@
-kind: pipeline
-type: docker
-name: docs
-steps:
-  # ============ BUILD STEPS ===============
-  - name: build documentation
-    image: glmdev/node-pnpm:latest
-    commands:
-      - pnpm i --silent
-      - pnpm docs:build
-      - cd docs && tar czf ../extollo_api_documentation.tar.gz www
-
-  # =============== DEPLOY STEPS ===============
-  - name: copy artifacts to static host
-    image: appleboy/drone-scp
-    settings:
-      host:
-        from_secret: docs_deploy_host
-      username:
-        from_secret: docs_deploy_user
-      key:
-        from_secret: docs_deploy_key
-      port: 22
-      source: extollo_api_documentation.tar.gz
-      target: /var/nfs/general/static/sites/extollo
-    when:
-      event: promote
-      target: docs
-
-  - name: deploy artifacts on static host
-    image: appleboy/drone-ssh
-    settings:
-      host:
-        from_secret: docs_deploy_host
-      username:
-        from_secret: docs_deploy_user
-      key:
-        from_secret: docs_deploy_key
-      port: 22
-      script:
-        - cd /var/nfs/general/static/sites/extollo
-        - rm -rf docs
-        - tar xzf extollo_api_documentation.tar.gz
-        - rm -rf extollo_api_documentation.tar.gz
-        - mv www docs
-    when:
-      event: promote
-      target: docs
-
-  # =============== BUILD NOTIFICATIONS ===============
-  - name: send build success notifications
-    image: plugins/webhook
-    settings:
-      urls:
-        from_secret: notify_webhook_url
-      content_type: application/json
-      template: |
-        {
-          "title": "Drone-CI [extollo/docs @ ${DRONE_BUILD_NUMBER}]",
-          "message": "Build & deploy completed successfully.",
-          "priority": 4
-        }
-    when:
-      status: success
-      event:
-        - promote
-
-  - name: send build error notifications
-    image: plugins/webhook
-    settings:
-      urls:
-        from_secret: notify_webhook_url
-      content_type: application/json
-      template: |
-        {
-          "title": "Drone-CI [extollo/docs @ ${DRONE_BUILD_NUMBER}]",
-          "message": "Documentation build failed!",
-          "priority": 6
-        }
-    when:
-      status: failure
 ---
-
 kind: pipeline
-name: default
+type: kubernetes
-type: docker
+name: docs
+
+metadata:
+  labels:
+    pod-security.kubernetes.io/audit: privileged
+
+services:
+  - name: docker daemon
+    image: docker:dind
+    privileged: true
+    environment:
+      DOCKER_TLS_CERTDIR: ""
+    when:
+      event: tag
+
 steps:
-  - name: post build in progress comment to PR
+  - name: typedoc build
-    image: tsakidev/giteacomment:latest
+    image: node:18
-    settings:
-      gitea_token:
-        from_secret: gitea_token
-      gitea_base_url: https://code.garrettmills.dev
-      comment: "Build ${DRONE_BUILD_NUMBER} started."
-    when:
-      event: pull_request
-
-  - name: remove lockfile
-    image: glmdev/node-pnpm:latest
     commands:
-      - rm -rf pnpm-lock.yaml
+      - "node -v"
-    when:
+      - "npm add --global pnpm"
-      event:
+      - "pnpm --version"
-        exclude: tag
+      - pnpm i
+      - pnpm run docs:build
 
-  - name: build module
+  - name: container build
-    image: glmdev/node-pnpm:latest
+    image: docker:latest
+    privileged: true
     commands:
+      - "while ! docker stats --no-stream; do sleep 1; done"
+      - docker image build docs -t $DOCKER_REGISTRY/extollo/docs:latest
+      - docker push $DOCKER_REGISTRY/extollo/docs:latest
+    environment:
+      DOCKER_HOST: tcp://localhost:2375
+      DOCKER_REGISTRY:
+        from_secret: DOCKER_REGISTRY
+    when:
+      event: tag
+      status: success
+
+  - name: k8s rollout
+    image: bitnami/kubectl
+    commands:
+      - cd docs/deploy && kubectl apply -f .
+      - kubectl rollout restart -n extollo deployment/docs
+    when:
+      event: tag
+      status: success
+
+---
+kind: pipeline
+type: kubernetes
+name: npm
+
+steps:
+  - name: node.js build
+    image: node:18
+    commands:
+      - "npm add --global pnpm"
       - pnpm i
       - pnpm build
-      - mkdir artifacts
-      - tar czf artifacts/extollo-lib.tar.gz lib
 
-  - name: create Gitea release
+  - name: gitea release
     image: plugins/gitea-release
     settings:
       api_key:
-        from_secret: gitea_token
+        from_secret: GITEA_TOKEN
       base_url: https://code.garrettmills.dev
       checksum: md5
       title: ${DRONE_TAG}
-      files: "artifacts/*"
     when:
       event: tag
       status: success
 
-  - name: prepare NPM release
+  - name: npm release
-    image: glmdev/node-pnpm:latest
-    commands:
-      - rm -rf artifacts
-    when:
-      event: tag
-      status: success
-
-  - name: create NPM release
     image: plugins/npm
     settings:
       username: extollo_bot
       password:
-        from_secret: npm_password
+        from_secret: NPM_PASSWORD
       email: extollo@garrettmills.dev
     when:
       event: tag
       status: success
-
-  - name: send build success notifications
-    image: plugins/webhook
-    settings:
-      urls:
-        from_secret: notify_webhook_url
-      content_type: application/json
-      template: |
-        {
-          "title": "Drone-CI [extollo/lib @ ${DRONE_BUILD_NUMBER}]",
-          "message": "Build completed successfully.",
-          "priority": 4
-        }
-    when:
-      status: success
-      event:
-        exclude:
-          - pull_request
-          - tag
-
-  - name: send publish success notifications
-    image: plugins/webhook
-    settings:
-      urls:
-        from_secret: notify_webhook_url
-      content_type: application/json
-      template: |
-        {
-          "title": "Drone-CI [extollo/lib @ ${DRONE_BUILD_NUMBER}]",
-          "message": "Successfully published tag ${DRONE_TAG}.",
-          "priority": 4
-        }
-    when:
-      status: success
-      event: tag
-
-  - name: post build success comment to PR
-    image: tsakidev/giteacomment:latest
-    settings:
-      gitea_token:
-        from_secret: gitea_token
-      gitea_base_url: https://code.garrettmills.dev
-      comment: "Build ${DRONE_BUILD_NUMBER} completed successfully."
-    when:
-      status: success
-      event: pull_request
-
-  - name: send build error notifications
-    image: plugins/webhook
-    settings:
-      urls:
-        from_secret: notify_webhook_url
-      content_type: application/json
-      template: |
-        {
-          "title": "Drone-CI [extollo/lib @ ${DRONE_BUILD_NUMBER}]",
-          "message": "Build failed!",
-          "priority": 6
-        }
-    when:
-      status: failure
-      event:
-        exclude:
-          - pull_request
-
-  - name: post build error comment to PR
-    image: tsakidev/giteacomment:latest
-    settings:
-      gitea_token:
-        from_secret: gitea_token
-      gitea_base_url: https://code.garrettmills.dev
-      comment: "Build ${DRONE_BUILD_NUMBER} failed!"
-    when:
-      status: failure
-      event: pull_request

.gitignore

@@ -1,3 +1,5 @@
+.undodir
+
 # ---> JetBrains
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

.idea/codeStyles/Project.xml

@@ -0,0 +1,55 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JSCodeStyleSettings version="0">
+      <option name="USE_SEMICOLON_AFTER_STATEMENT" value="false" />
+      <option name="FORCE_SEMICOLON_STYLE" value="true" />
+      <option name="USE_DOUBLE_QUOTES" value="false" />
+      <option name="FORCE_QUOTE_STYlE" value="true" />
+      <option name="ENFORCE_TRAILING_COMMA" value="WhenMultiline" />
+      <option name="OBJECT_LITERAL_WRAP" value="2" />
+    </JSCodeStyleSettings>
+    <TypeScriptCodeStyleSettings version="0">
+      <option name="USE_SEMICOLON_AFTER_STATEMENT" value="false" />
+      <option name="FORCE_SEMICOLON_STYLE" value="true" />
+      <option name="USE_DOUBLE_QUOTES" value="false" />
+      <option name="FORCE_QUOTE_STYlE" value="true" />
+      <option name="ENFORCE_TRAILING_COMMA" value="WhenMultiline" />
+      <option name="OBJECT_LITERAL_WRAP" value="2" />
+    </TypeScriptCodeStyleSettings>
+    <editorconfig>
+      <option name="ENABLED" value="false" />
+    </editorconfig>
+    <codeStyleSettings language="JavaScript">
+      <option name="INDENT_CASE_FROM_SWITCH" value="false" />
+      <option name="ALIGN_MULTILINE_PARAMETERS" value="false" />
+      <option name="ALIGN_MULTILINE_FOR" value="false" />
+      <option name="METHOD_CALL_CHAIN_WRAP" value="2" />
+      <option name="IF_BRACE_FORCE" value="3" />
+      <option name="DOWHILE_BRACE_FORCE" value="3" />
+      <option name="WHILE_BRACE_FORCE" value="3" />
+      <option name="FOR_BRACE_FORCE" value="3" />
+    </codeStyleSettings>
+    <codeStyleSettings language="PHP">
+      <indentOptions>
+        <option name="USE_TAB_CHARACTER" value="true" />
+        <option name="SMART_TABS" value="true" />
+      </indentOptions>
+    </codeStyleSettings>
+    <codeStyleSettings language="Shell Script">
+      <indentOptions>
+        <option name="INDENT_SIZE" value="4" />
+        <option name="TAB_SIZE" value="4" />
+      </indentOptions>
+    </codeStyleSettings>
+    <codeStyleSettings language="TypeScript">
+      <option name="INDENT_CASE_FROM_SWITCH" value="false" />
+      <option name="ALIGN_MULTILINE_PARAMETERS" value="false" />
+      <option name="ALIGN_MULTILINE_FOR" value="false" />
+      <option name="METHOD_CALL_CHAIN_WRAP" value="2" />
+      <option name="IF_BRACE_FORCE" value="3" />
+      <option name="DOWHILE_BRACE_FORCE" value="3" />
+      <option name="WHILE_BRACE_FORCE" value="3" />
+      <option name="FOR_BRACE_FORCE" value="3" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/dataSources.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="mongo@localhost" uuid="b05ce3f5-fadc-47d6-8621-e232ed1ad2f3">
+      <driver-ref>mongo</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>com.dbschema.MongoJdbcDriver</jdbc-driver>
+      <jdbc-url>mongodb://localhost:27017/extollo_1</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+    <data-source source="LOCAL" name="extollo_1@db03.platform.local" uuid="c8dc268d-b69d-497a-9e6d-b5c6e5275835">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql://db03.platform.local:5432/extollo_1</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/lib.iml

@@ -4,5 +4,6 @@
     <content url="file://$MODULE_DIR$" />
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module" module-name="extollo" />
   </component>
 </module>

.idea/modules.xml

@@ -2,6 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
+      <module fileurl="file://$PROJECT_DIR$/../app/.idea/extollo.iml" filepath="$PROJECT_DIR$/../app/.idea/extollo.iml" />
       <module fileurl="file://$PROJECT_DIR$/.idea/lib.iml" filepath="$PROJECT_DIR$/.idea/lib.iml" />
     </modules>
   </component>

.idea/vcs.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="" vcs="Git" />
   </component>
 </project>

docs/Dockerfile

@@ -0,0 +1,4 @@
+FROM joseluisq/static-web-server:2
+
+COPY ./www /public
+

docs/HOME.md

@@ -22,7 +22,7 @@ Node.js provides an excellent platform for quickly getting an application up and
 ## Getting Started
 Writing an application with Extollo is very straightforward if you are familiar with Node.js/TypeScript, or similar frameworks like Laravel.
 
-Check out the [Getting Started](https://extollo.garrettmills.dev/pages/Documentation/Getting-Started.html) page site for more information.
+Check out the [Getting Started](pages/Getting-Started.html) page site for more information.
 
 ## License & Philosophy
 The Extollo project is, and will always be, free & libre software. The framework itself is open-source available [here](https://code.garrettmills.dev/Extollo), and is licensed under the terms of the MIT license. See the LICENSE file for more information.

docs/deploy/00-namespace.yaml

@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: extollo

docs/deploy/10-deployment.yaml

@@ -0,0 +1,23 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: docs
+  namespace: extollo
+spec:
+  selector:
+    matchLabels:
+      app: docs
+  template:
+    metadata:
+      name: docs
+      namespace: extollo
+      labels:
+        app: docs
+    spec:
+      containers:
+        - name: docs-www
+          image: registry.millslan.net/extollo/docs
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 80

docs/deploy/15-service.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: docs-service
+  namespace: extollo
+spec:
+  selector:
+    app: docs
+  ports:
+    - port: 80
+      targetPort: 80
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: docs-service-lb
+  namespace: extollo
+spec:
+  type: LoadBalancer
+  selector:
+    app: docs
+  ports:
+    - port: 80
+      targetPort: 80

docs/deploy/20-certificate.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: docs-tls
+  namespace: extollo
+spec:
+  secretName: docs-tls-secret
+  dnsNames:
+    - 'extollo.garrettmills.dev'
+  issuerRef:
+    name: letsencrypt-ca
+    kind: ClusterIssuer

docs/deploy/20-ingress.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: docs-ingress
+  namespace: extollo
+  annotations:
+    nginx.ingress.kubernetes.io/ssl-redirect: 'false'
+spec:
+  tls:
+    - hosts:
+        - extollo.garrettmills.dev
+      secretName: docs-tls-secret
+  ingressClassName: nginx
+  rules:
+    - host: extollo.garrettmills.dev
+      http:
+        paths:
+          - pathType: Prefix
+            path: '/'
+            backend:
+              service:
+                name: docs-service
+                port:
+                  number: 80

docs/pages/About-Extollo.md

@@ -1 +0,0 @@
-# About the Extollo Project

docs/pages/Getting-Started.md

@@ -1,4 +1,3 @@
-# Getting Started with Extollo
 
 ## Requirements
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@extollo/lib",
-  "version": "0.3.1",
+  "version": "0.14.14",
   "description": "The framework library that lifts up your code.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
@@ -8,45 +8,56 @@
     "lib": "lib"
   },
   "dependencies": {
+    "@atao60/fse-cli": "^0.1.7",
+    "@extollo/ui": "^0.1.0",
     "@types/bcrypt": "^5.0.0",
-    "@types/busboy": "^0.2.3",
+    "@types/busboy": "^0.2.4",
-    "@types/cli-table": "^0.3.0",
+    "@types/cli-table": "^0.3.1",
-    "@types/mkdirp": "^1.0.1",
+    "@types/ioredis": "^4.28.10",
+    "@types/jsonwebtoken": "^8.5.9",
+    "@types/mime-types": "^2.1.1",
+    "@types/mkdirp": "^1.0.2",
     "@types/negotiator": "^0.6.1",
-    "@types/node": "^14.14.37",
+    "@types/node": "^14.18.51",
-    "@types/pg": "^8.6.0",
+    "@types/pg": "^8.10.2",
     "@types/pluralize": "^0.0.29",
-    "@types/pug": "^2.0.4",
+    "@types/pug": "^2.0.6",
-    "@types/rimraf": "^3.0.0",
+    "@types/rimraf": "^3.0.2",
-    "@types/ssh2": "^0.5.46",
+    "@types/ssh2": "^0.5.52",
-    "@types/uuid": "^8.3.0",
+    "@types/uuid": "^8.3.4",
-    "bcrypt": "^5.0.1",
+    "@types/ws": "^8.5.5",
+    "bcrypt": "^5.1.0",
     "busboy": "^0.3.1",
-    "cli-table": "^0.3.6",
+    "cli-table": "^0.3.11",
     "colors": "^1.4.0",
-    "dotenv": "^8.2.0",
+    "dotenv": "^8.6.0",
+    "ioredis": "^4.28.5",
+    "jsonwebtoken": "^8.5.1",
+    "mime-types": "^2.1.35",
     "mkdirp": "^1.0.4",
-    "negotiator": "^0.6.2",
+    "negotiator": "^0.6.3",
-    "pg": "^8.6.0",
+    "node-fetch": "^3.3.1",
+    "pg": "^8.11.0",
     "pluralize": "^8.0.0",
     "pug": "^3.0.2",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
-    "ssh2": "^1.1.0",
+    "sqlite": "^4.2.1",
-    "ts-node": "^9.1.1",
+    "sqlite3": "^5.1.6",
-    "typedoc": "^0.20.36",
+    "ssh2": "^1.13.0",
-    "typedoc-plugin-pages-fork": "^0.0.1",
+    "ts-node": "^10.9.1",
-    "typedoc-plugin-sourcefile-url": "^1.0.6",
+    "typescript": "^4.9.5",
-    "typescript": "^4.2.3",
+    "uuid": "^8.3.2",
-    "uuid": "^8.3.2"
+    "ws": "^8.13.0",
+    "zod": "^3.21.4"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "env TS_NODE_COMPILER_OPTIONS='{\"module\": \"commonjs\" }' mocha -r ts-node/register 'tests/**/*.ts'",
-    "prebuild": "pnpm run lint",
+    "build": "pnpm run lint && rimraf lib && tsc && fse copy --all --dereference --preserveTimestamps --keepExisting=false --quiet --errorOnExist=false src/resources lib/resources",
-    "build": "tsc",
     "app": "tsc && node lib/index.js",
     "prepare": "pnpm run build",
     "docs:build": "typedoc --options typedoc.json",
+    "docs:build:docker": "pnpm run docs:build && docker image build docs -t ${DOCKER_REGISTRY}/extollo/docs:latest && docker push ${DOCKER_REGISTRY}/extollo/docs:latest",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint --fix . --ext .ts"
   },
@@ -62,8 +73,28 @@
   "author": "garrettmills <shout@garrettmills.dev>",
   "license": "MIT",
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^4.26.0",
+    "@knodes/typedoc-plugin-pages": "^0.23.4",
-    "@typescript-eslint/parser": "^4.26.0",
+    "@types/chai": "^4.3.5",
-    "eslint": "^7.27.0"
+    "@types/mocha": "^9.1.1",
+    "@types/sinon": "^10.0.15",
+    "@types/wtfnode": "^0.7.0",
+    "@typescript-eslint/eslint-plugin": "^5.59.11",
+    "@typescript-eslint/parser": "^5.59.11",
+    "chai": "^4.3.7",
+    "eslint": "^8.42.0",
+    "lunr": "^2.3.9",
+    "mocha": "^9.2.2",
+    "sinon": "^12.0.1",
+    "typedoc": "^0.23.28",
+    "wtfnode": "^0.9.1"
+  },
+  "extollo": {
+    "discover": true,
+    "units": {
+      "discover": false
+    },
+    "recursiveDependencies": {
+      "discover": true
+    }
   }
 }

src/auth/AuthenticatableAlreadyExistsError.ts

@@ -0,0 +1,5 @@
+import {ErrorWithContext} from '../util'
+
+export class AuthenticatableAlreadyExistsError extends ErrorWithContext {
+
+}

src/auth/Authentication.ts

@@ -1,16 +1,19 @@
-import {Inject, Injectable, Instantiable, StaticClass} from '../di'
 import {Unit} from '../lifecycle/Unit'
+import {Injectable, Inject, StaticInstantiable} from '../di'
 import {Logging} from '../service/Logging'
+import {Middlewares} from '../service/Middlewares'
 import {CanonicalResolver} from '../service/Canonical'
 import {Middleware} from '../http/routing/Middleware'
-import {SessionAuthMiddleware} from './middleware/SessionAuthMiddleware'
 import {AuthRequiredMiddleware} from './middleware/AuthRequiredMiddleware'
 import {GuestRequiredMiddleware} from './middleware/GuestRequiredMiddleware'
-import {Middlewares} from '../service/Middlewares'
+import {SessionAuthMiddleware} from './middleware/SessionAuthMiddleware'
+import {ViewEngine} from '../views/ViewEngine'
+import {SecurityContext} from './context/SecurityContext'
+import {LoginProvider, LoginProviderConfig} from './provider/LoginProvider'
+import {Config} from '../service/Config'
+import {ErrorWithContext, hasOwnProperty} from '../util'
+import {Route} from '../http/routing/Route'
 
-/**
- * Unit class that bootstraps the authentication framework.
- */
 @Injectable()
 export class Authentication extends Unit {
     @Inject()
@@ -19,21 +22,64 @@ export class Authentication extends Unit {
     @Inject()
     protected readonly middleware!: Middlewares
 
-    async up(): Promise<void> {
+    @Inject()
-        this.container()
+    protected readonly config!: Config
-        this.middleware.registerNamespace('@auth', this.getMiddlewareResolver())
+
+    protected providers: {[name: string]: LoginProvider<LoginProviderConfig>} = {}
+
+    getProvider(name: string): LoginProvider<LoginProviderConfig> {
+        const provider = this.providers[name]
+        if ( !provider ) {
+            throw new ErrorWithContext('Invalid auth provider name: ' + name, { name })
         }
 
-    /**
+        return provider
-     * Create the canonical namespace resolver for auth middleware.
+    }
-     * @protected
+
-     */
+    async up(): Promise<void> {
-    protected getMiddlewareResolver(): CanonicalResolver<StaticClass<Middleware, Instantiable<Middleware>>> {
+        this.middleware.registerNamespace('@auth', this.getMiddlewareResolver())
+
+        this.container().onResolve<ViewEngine>(ViewEngine)
+            .then((engine: ViewEngine) => {
+                engine.registerGlobalFactory('user', req => {
+                    return () => req?.make<SecurityContext>(SecurityContext)?.getUser()
+                })
+            })
+
+        const config = this.config.get('auth.providers', {})
+        const middleware = this.config.get('auth.middleware', SessionAuthMiddleware)
+
+        if ( !(middleware?.prototype instanceof Middleware) ) {
+            throw new ErrorWithContext('Auth middleware must extend Middleware base class', {
+                providedValue: middleware,
+                configKey: 'auth.middleware',
+            })
+        }
+
+        for ( const name in config ) {
+            if ( !hasOwnProperty(config, name) ) {
+                continue
+            }
+
+            if ( this.providers[name] ) {
+                this.logging.warn(`Registering duplicate authentication provider: ${name}`)
+            }
+
+            this.logging.verbose(`Registered authentication provider: ${name}`)
+            this.providers[name] = this.make(config[name].driver, name, config[name].config)
+
+            Route.group(`/auth/${name}`, () => {
+                this.providers[name].routes()
+            }).pre(middleware)
+        }
+    }
+
+    protected getMiddlewareResolver(): CanonicalResolver<StaticInstantiable<Middleware>> {
         return (key: string) => {
             return ({
-                web: SessionAuthMiddleware,
                 required: AuthRequiredMiddleware,
                 guest: GuestRequiredMiddleware,
+                web: SessionAuthMiddleware,
             })[key]
         }
     }

src/auth/SecurityContext.ts

@@ -1,143 +0,0 @@
-import {Inject, Injectable} from '../di'
-import {EventBus} from '../event/EventBus'
-import {Awaitable, Maybe} from '../util'
-import {Authenticatable, AuthenticatableRepository} from './types'
-import {UserAuthenticatedEvent} from './event/UserAuthenticatedEvent'
-import {UserFlushedEvent} from './event/UserFlushedEvent'
-import {UserAuthenticationResumedEvent} from './event/UserAuthenticationResumedEvent'
-
-/**
- * Base-class for a context that authenticates users and manages security.
- */
-@Injectable()
-export abstract class SecurityContext {
-    @Inject()
-    protected readonly bus!: EventBus
-
-    /** The currently authenticated user, if one exists. */
-    private authenticatedUser?: Authenticatable
-
-    constructor(
-        /** The repository from which to draw users. */
-        public readonly repository: AuthenticatableRepository,
-
-        /** The name of this context. */
-        public readonly name: string,
-    ) { }
-
-    /**
-     * Called when the context is created. Can be used by child-classes to do setup work.
-     */
-    initialize(): Awaitable<void> {}  // eslint-disable-line @typescript-eslint/no-empty-function
-
-    /**
-     * Authenticate the given user, without persisting the authentication.
-     * That is, when the lifecycle ends, the user will be unauthenticated implicitly.
-     * @param user
-     */
-    async authenticateOnce(user: Authenticatable): Promise<void> {
-        this.authenticatedUser = user
-        await this.bus.dispatch(new UserAuthenticatedEvent(user, this))
-    }
-
-    /**
-     * Authenticate the given user and persist the authentication.
-     * @param user
-     */
-    async authenticate(user: Authenticatable): Promise<void> {
-        this.authenticatedUser = user
-        await this.persist()
-        await this.bus.dispatch(new UserAuthenticatedEvent(user, this))
-    }
-
-    /**
-     * Attempt to authenticate a user based on their credentials.
-     * If the credentials are valid, the user will be authenticated, but the authentication
-     * will not be persisted. That is, when the lifecycle ends, the user will be
-     * unauthenticated implicitly.
-     * @param credentials
-     */
-    async attemptOnce(credentials: Record<string, string>): Promise<Maybe<Authenticatable>> {
-        const user = await this.repository.getByCredentials(credentials)
-        if ( user ) {
-            await this.authenticateOnce(user)
-            return user
-        }
-    }
-
-    /**
-     * Attempt to authenticate a user based on their credentials.
-     * If the credentials are valid, the user will be authenticated and the
-     * authentication will be persisted.
-     * @param credentials
-     */
-    async attempt(credentials: Record<string, string>): Promise<Maybe<Authenticatable>> {
-        const user = await this.repository.getByCredentials(credentials)
-        if ( user ) {
-            await this.authenticate(user)
-            return user
-        }
-    }
-
-    /**
-     * Unauthenticate the current user, if one exists, but do not persist the change.
-     */
-    async flushOnce(): Promise<void> {
-        const user = this.authenticatedUser
-        if ( user ) {
-            this.authenticatedUser = undefined
-            await this.bus.dispatch(new UserFlushedEvent(user, this))
-        }
-    }
-
-    /**
-     * Unauthenticate the current user, if one exists, and persist the change.
-     */
-    async flush(): Promise<void> {
-        const user = this.authenticatedUser
-        if ( user ) {
-            this.authenticatedUser = undefined
-            await this.persist()
-            await this.bus.dispatch(new UserFlushedEvent(user, this))
-        }
-    }
-
-    /**
-     * Assuming a user is still authenticated in the context,
-     * try to look up and fill in the user.
-     */
-    async resume(): Promise<void> {
-        const credentials = await this.getCredentials()
-        const user = await this.repository.getByCredentials(credentials)
-        if ( user ) {
-            this.authenticatedUser = user
-            await this.bus.dispatch(new UserAuthenticationResumedEvent(user, this))
-        }
-    }
-
-    /**
-     * Write the current state of the security context to whatever storage
-     * medium the context's host provides.
-     */
-    abstract persist(): Awaitable<void>
-
-    /**
-     * Get the credentials for the current user from whatever storage medium
-     * the context's host provides.
-     */
-    abstract getCredentials(): Awaitable<Record<string, string>>
-
-    /**
-     * Get the currently authenticated user, if one exists.
-     */
-    getUser(): Maybe<Authenticatable> {
-        return this.authenticatedUser
-    }
-
-    /**
-     * Returns true if there is a currently authenticated user.
-     */
-    hasUser(): boolean {
-        return Boolean(this.authenticatedUser)
-    }
-}

src/auth/config.ts

@@ -1,25 +1,51 @@
-import {Instantiable} from '../di'
+import {Instantiable, isInstantiable} from '../di'
-import {ORMUserRepository} from './orm/ORMUserRepository'
+import {AuthenticatableRepository} from './types'
+import {hasOwnProperty} from '../util'
+import {LoginProvider, LoginProviderConfig} from './provider/LoginProvider'
+import {Middleware} from '../http/routing/Middleware'
 
-/**
+export interface AuthenticationConfig {
- * Inferface for type-checking the AuthenticatableRepositories values.
+    storage: Instantiable<AuthenticatableRepository>,
- */
+    middleware?: Instantiable<Middleware>,
-export interface AuthenticatableRepositoryMapping {
+    providers?: {
-    orm: Instantiable<ORMUserRepository>,
+        [key: string]: {
+            driver: Instantiable<LoginProvider<LoginProviderConfig>>,
+            config: LoginProviderConfig,
+        },
+    },
 }
 
-/**
+export function isAuthenticationConfig(what: unknown): what is AuthenticationConfig {
- * String mapping of AuthenticatableRepository implementations.
+    if ( typeof what !== 'object' || !what ) {
- */
+        return false
-export const AuthenticatableRepositories: AuthenticatableRepositoryMapping = {
-    orm: ORMUserRepository,
     }
 
-/**
+    if ( !hasOwnProperty(what, 'storage') || !hasOwnProperty(what, 'providers') ) {
- * Interface for making the auth config type-safe.
+        return false
- */
+    }
-export interface AuthConfig {
+
-    repositories: {
+    if ( !isInstantiable(what.storage) || !(what.storage.prototype instanceof AuthenticatableRepository) ) {
-        session: keyof AuthenticatableRepositoryMapping,
+        return false
+    }
+
+    if ( typeof what.providers !== 'object' ) {
+        return false
+    }
+
+    for ( const key in what.providers ) {
+        if ( !hasOwnProperty(what.providers, key) ) {
+            continue
+        }
+
+        const source = what.providers[key]
+        if ( typeof source !== 'object' || source === null || !hasOwnProperty(source, 'driver') ) {
+            return false
+        }
+
+        if ( !isInstantiable(source.driver) || !(source.driver.prototype instanceof LoginProvider) ) {
+            return false
         }
     }
+
+    return true
+}

src/auth/context/SecurityContext.ts

@@ -0,0 +1,122 @@
+import {Inject, Injectable} from '../../di'
+import {Awaitable, HTTPStatus, Maybe} from '../../util'
+import {Authenticatable, AuthenticatableRepository} from '../types'
+import {Logging} from '../../service/Logging'
+import {UserAuthenticatedEvent} from '../event/UserAuthenticatedEvent'
+import {UserFlushedEvent} from '../event/UserFlushedEvent'
+import {Bus} from '../../support/bus'
+import {HTTPError} from '../../http/HTTPError'
+
+/**
+ * Base-class for a context that authenticates users and manages security.
+ */
+@Injectable()
+export abstract class SecurityContext {
+    @Inject()
+    protected readonly bus!: Bus
+
+    @Inject()
+    protected readonly logging!: Logging
+
+    /** The currently authenticated user, if one exists. */
+    protected authenticatedUser?: Authenticatable
+
+    constructor(
+        /** The repository where users are persisted. */
+        public readonly repository: AuthenticatableRepository,
+
+        /** The name of this context. */
+        public readonly name: string,
+    ) { }
+
+    /**
+     * Called when the context is created. Can be used by child-classes to do setup work.
+     */
+    initialize(): Awaitable<void> {}  // eslint-disable-line @typescript-eslint/no-empty-function
+
+    /**
+     * Authenticate the given user, without persisting the authentication.
+     * That is, when the lifecycle ends, the user will be unauthenticated implicitly.
+     * @param user
+     */
+    async authenticateOnce(user: Authenticatable): Promise<void> {
+        this.authenticatedUser = user
+        await this.bus.push(new UserAuthenticatedEvent(user, this))
+    }
+
+    /**
+     * Authenticate the given user and persist the authentication.
+     * @param user
+     */
+    async authenticate(user: Authenticatable): Promise<void> {
+        this.authenticatedUser = user
+        await this.persist()
+        await this.bus.push(new UserAuthenticatedEvent(user, this))
+    }
+
+    /**
+     * Unauthenticate the current user, if one exists, but do not persist the change.
+     */
+    async flushOnce(): Promise<void> {
+        const user = this.authenticatedUser
+        if ( user ) {
+            this.authenticatedUser = undefined
+            await this.bus.push(new UserFlushedEvent(user, this))
+        }
+    }
+
+    /**
+     * Unauthenticate the current user, if one exists, and persist the change.
+     */
+    async flush(): Promise<void> {
+        const user = this.authenticatedUser
+        if ( user ) {
+            this.authenticatedUser = undefined
+            await this.persist()
+            await this.bus.push(new UserFlushedEvent(user, this))
+        }
+    }
+
+    /**
+     * Assuming a user is still authenticated in the context,
+     * try to look up and fill in the user.
+     *
+     * If there is NO USER to be resumed, then the method should flush
+     * the user from this context.
+     */
+    abstract resume(): Awaitable<void>
+
+    /**
+     * Write the current state of the security context to whatever storage
+     * medium the context's host provides.
+     */
+    abstract persist(): Awaitable<void>
+
+    /**
+     * Get the currently authenticated user, if one exists.
+     */
+    getUser(): Maybe<Authenticatable> {
+        return this.authenticatedUser
+    }
+
+    /** Get the current user or throw an authorization error. */
+    user(): Authenticatable {
+        if ( !this.hasUser() ) {
+            throw new HTTPError(HTTPStatus.UNAUTHORIZED)
+        }
+
+        const user = this.getUser()
+        if ( !user ) {
+            throw new HTTPError(HTTPStatus.UNAUTHORIZED)
+        }
+
+        return user
+    }
+
+    /**
+     * Returns true if there is a currently authenticated user.
+     */
+    hasUser(): boolean {
+        return Boolean(this.authenticatedUser)
+    }
+}

src/auth/context/SessionSecurityContext.ts

@@ -0,0 +1,42 @@
+import {SecurityContext} from './SecurityContext'
+import {Inject, Injectable} from '../../di'
+import {Session} from '../../http/session/Session'
+import {Awaitable} from '../../util'
+import {AuthenticatableRepository} from '../types'
+import {UserAuthenticationResumedEvent} from '../event/UserAuthenticationResumedEvent'
+
+export const EXTOLLO_AUTH_SESSION_KEY = '@extollo:auth.securityIdentifier'
+
+/**
+ * Security context implementation that uses the session as storage.
+ */
+@Injectable()
+export class SessionSecurityContext extends SecurityContext {
+    @Inject()
+    protected readonly session!: Session
+
+    constructor(
+        /** The repository from which to draw users. */
+        public readonly repository: AuthenticatableRepository,
+    ) {
+        super(repository, 'session')
+    }
+
+    persist(): Awaitable<void> {
+        this.session.set(EXTOLLO_AUTH_SESSION_KEY, this.getUser()?.getIdentifier())
+    }
+
+    async resume(): Promise<void> {
+        const identifier = this.session.get(EXTOLLO_AUTH_SESSION_KEY)
+        if ( identifier ) {
+            const user = await this.repository.getByIdentifier(identifier)
+            if ( user ) {
+                this.authenticatedUser = user
+                await this.bus.push(new UserAuthenticationResumedEvent(user, this))
+                return
+            }
+        }
+
+        this.authenticatedUser = undefined
+    }
+}

src/auth/context/TokenSecurityContext.ts

@@ -0,0 +1,44 @@
+import {SecurityContext} from './SecurityContext'
+import {AuthenticatableRepository} from '../types'
+import {Awaitable} from '../../util'
+import {Inject} from '../../di'
+import {Request} from '../../http/lifecycle/Request'
+import {OAuth2Token, TokenRepository} from '../server/types'
+import {UserAuthenticationResumedEvent} from '../event/UserAuthenticationResumedEvent'
+
+export class TokenSecurityContext extends SecurityContext {
+    @Inject()
+    protected readonly request!: Request
+
+    @Inject()
+    protected readonly tokens!: TokenRepository
+
+    constructor(
+        public readonly repository: AuthenticatableRepository,
+    ) {
+        super(repository, 'token')
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-empty-function
+    persist(): Awaitable<void> {}
+
+    async resume(): Promise<void> {
+        if ( !this.request.hasInstance(OAuth2Token) ) {
+            return
+        }
+
+        const token: OAuth2Token = this.request.getExistingInstance(OAuth2Token)
+        if ( !token.userId ) {
+            return
+        }
+
+        const user = await this.repository.getByIdentifier(token.userId)
+        if ( user ) {
+            this.authenticatedUser = user
+            await this.bus.push(new UserAuthenticationResumedEvent(user, this))
+            return
+        }
+
+        this.authenticatedUser = undefined
+    }
+}

src/auth/contexts/SessionSecurityContext.ts

@@ -1,31 +0,0 @@
-import {SecurityContext} from '../SecurityContext'
-import {Inject, Injectable} from '../../di'
-import {Session} from '../../http/session/Session'
-import {Awaitable} from '../../util'
-import {AuthenticatableRepository} from '../types'
-
-/**
- * Security context implementation that uses the session as storage.
- */
-@Injectable()
-export class SessionSecurityContext extends SecurityContext {
-    @Inject()
-    protected readonly session!: Session
-
-    constructor(
-        /** The repository from which to draw users. */
-        public readonly repository: AuthenticatableRepository,
-    ) {
-        super(repository, 'session')
-    }
-
-    getCredentials(): Awaitable<Record<string, string>> {
-        return {
-            securityIdentifier: this.session.get('extollo.auth.securityIdentifier'),
-        }
-    }
-
-    persist(): Awaitable<void> {
-        this.session.set('extollo.auth.securityIdentifier', this.getUser()?.getIdentifier())
-    }
-}

src/auth/event/AuthCheckFailed.ts

@@ -0,0 +1,27 @@
+import {BaseEvent, BaseSerializer, ObjectSerializer} from '../../support/bus'
+import {Awaitable} from '../../util'
+
+/** An event raised when a required auth check has failed. */
+export class AuthCheckFailed extends BaseEvent {
+    eventName = '@extollo/lib:AuthCheckFailed'
+}
+
+/** Serializes AuthCheckFailed events. */
+@ObjectSerializer()
+export class AuthCheckFailedSerializer extends BaseSerializer<AuthCheckFailed, { authCheckFailed: true }> {
+    protected decodeSerial(): Awaitable<AuthCheckFailed> {
+        return new AuthCheckFailed()
+    }
+
+    protected encodeActual(): Awaitable<{ authCheckFailed: true }> {
+        return { authCheckFailed: true }
+    }
+
+    protected getName(): string {
+        return '@extollo/lib:AuthCheckFailedSerializer'
+    }
+
+    matchActual(some: AuthCheckFailed): boolean {
+        return some instanceof AuthCheckFailed
+    }
+}

src/auth/event/AuthenticationEvent.ts

@@ -0,0 +1,12 @@
+import {SecurityContext} from '../context/SecurityContext'
+import {Authenticatable} from '../types'
+import {BaseEvent} from '../../support/bus'
+
+export abstract class AuthenticationEvent extends BaseEvent {
+    constructor(
+        public readonly user: Authenticatable,
+        public readonly context: SecurityContext,
+    ) {
+        super()
+    }
+}

src/auth/event/UserAuthenticatedEvent.ts

@@ -1,27 +1,8 @@
-import {Event} from '../../event/Event'
+import {AuthenticationEvent} from './AuthenticationEvent'
-import {SecurityContext} from '../SecurityContext'
-import {Awaitable, JSONState} from '../../util'
-import {Authenticatable} from '../types'
 
 /**
  * Event fired when a user is authenticated.
  */
-export class UserAuthenticatedEvent extends Event {
+export class UserAuthenticatedEvent extends AuthenticationEvent {
-    constructor(
+    public readonly eventName = '@extollo/lib:UserAuthenticatedEvent'
-        public readonly user: Authenticatable,
-        public readonly context: SecurityContext,
-    ) {
-        super()
-    }
-
-    async dehydrate(): Promise<JSONState> {
-        return {
-            user: await this.user.dehydrate(),
-            contextName: this.context.name,
-        }
-    }
-
-    rehydrate(state: JSONState): Awaitable<void> {  // eslint-disable-line @typescript-eslint/no-unused-vars
-        // TODO fill this in
-    }
 }

src/auth/event/UserAuthenticationResumedEvent.ts

@@ -1,27 +1,8 @@
-import {Event} from '../../event/Event'
+import {AuthenticationEvent} from './AuthenticationEvent'
-import {SecurityContext} from '../SecurityContext'
-import {Awaitable, JSONState} from '../../util'
-import {Authenticatable} from '../types'
 
 /**
- * Event fired when a security context for a given user is resumed.
+ * Event raised when a user is re-authenticated to a security context
  */
-export class UserAuthenticationResumedEvent extends Event {
+export class UserAuthenticationResumedEvent extends AuthenticationEvent {
-    constructor(
+    public readonly eventName = '@extollo/lib:UserAuthenticationResumedEvent'
-        public readonly user: Authenticatable,
-        public readonly context: SecurityContext,
-    ) {
-        super()
-    }
-
-    async dehydrate(): Promise<JSONState> {
-        return {
-            user: await this.user.dehydrate(),
-            contextName: this.context.name,
-        }
-    }
-
-    rehydrate(state: JSONState): Awaitable<void> {  // eslint-disable-line @typescript-eslint/no-unused-vars
-        // TODO fill this in
-    }
 }

src/auth/event/UserFlushedEvent.ts

@@ -1,27 +1,8 @@
-import {Event} from '../../event/Event'
+import {AuthenticationEvent} from './AuthenticationEvent'
-import {SecurityContext} from '../SecurityContext'
-import {Awaitable, JSONState} from '../../util'
-import {Authenticatable} from '../types'
 
 /**
  * Event fired when a user is unauthenticated.
  */
-export class UserFlushedEvent extends Event {
+export class UserFlushedEvent extends AuthenticationEvent {
-    constructor(
+    public readonly eventName = '@extollo/lib:UserFlushedEvent'
-        public readonly user: Authenticatable,
-        public readonly context: SecurityContext,
-    ) {
-        super()
-    }
-
-    async dehydrate(): Promise<JSONState> {
-        return {
-            user: await this.user.dehydrate(),
-            contextName: this.context.name,
-        }
-    }
-
-    rehydrate(state: JSONState): Awaitable<void> {  // eslint-disable-line @typescript-eslint/no-unused-vars
-        // TODO fill this in
-    }
 }

src/auth/index.ts

@@ -1,21 +1,49 @@
 export * from './types'
+export * from './AuthenticatableAlreadyExistsError'
 export * from './NotAuthorizedError'
+export * from './Authentication'
+export * from './repository/AuthenticatableRepositoryFactory'
 
-export * from './SecurityContext'
+export * from './context/SecurityContext'
+export * from './context/SessionSecurityContext'
+export * from './context/TokenSecurityContext'
 
+export * from './event/AuthenticationEvent'
 export * from './event/UserAuthenticatedEvent'
-export * from './event/UserFlushedEvent'
 export * from './event/UserAuthenticationResumedEvent'
-
+export * from './event/UserFlushedEvent'
-export * from './contexts/SessionSecurityContext'
+export * from './event/AuthCheckFailed'
-
-export * from './orm/ORMUser'
-export * from './orm/ORMUserRepository'
 
 export * from './middleware/AuthRequiredMiddleware'
 export * from './middleware/GuestRequiredMiddleware'
 export * from './middleware/SessionAuthMiddleware'
+export * from './middleware/TokenAuthMiddleware'
+export * from './middleware/ScopeRequiredMiddleware'
 
-export * from './Authentication'
+export * from './provider/basic/BasicLoginAttempt'
+export * from './provider/basic/BasicLoginProvider'
+export * from './provider/basic/BasicRegistrationAttempt'
+
+export * from './provider/oauth/OAuth2LoginProvider'
+export * from './provider/oauth/CoreIDLoginProvider'
+
+export * from './serial/AuthenticationEventSerializer'
+
+export * from './repository/orm/ORMUser'
+export * from './repository/orm/ORMUserRepository'
 
 export * from './config'
+
+export * from './webSocketAuthCheck'
+
+export * from './server/types'
+export * from './server/models/OAuth2TokenModel'
+export * from './server/repositories/ConfigClientRepository'
+export * from './server/repositories/ConfigScopeRepository'
+export * from './server/repositories/ClientRepositoryFactory'
+export * from './server/repositories/ScopeRepositoryFactory'
+export * from './server/repositories/ORMTokenRepository'
+export * from './server/repositories/TokenRepositoryFactory'
+export * from './server/repositories/CacheRedemptionCodeRepository'
+export * from './server/repositories/RedemptionCodeRepositoryFactory'
+export * from './server/OAuth2Server'

src/auth/middleware/AuthRequiredMiddleware.ts

@@ -1,19 +1,36 @@
 import {Middleware} from '../../http/routing/Middleware'
 import {Inject, Injectable} from '../../di'
-import {SecurityContext} from '../SecurityContext'
+import {SecurityContext} from '../context/SecurityContext'
 import {ResponseObject} from '../../http/routing/Route'
 import {error} from '../../http/response/ErrorResponseFactory'
 import {NotAuthorizedError} from '../NotAuthorizedError'
 import {HTTPStatus} from '../../util'
+import {redirect} from '../../http/response/RedirectResponseFactory'
+import {Routing} from '../../service/Routing'
+import {Session} from '../../http/session/Session'
+
+// TODO handle JSON and non-web
 
 @Injectable()
 export class AuthRequiredMiddleware extends Middleware {
     @Inject()
     protected readonly security!: SecurityContext
 
+    @Inject()
+    protected readonly routing!: Routing
+
+    @Inject()
+    protected readonly session!: Session
+
     async apply(): Promise<ResponseObject> {
         if ( !this.security.hasUser() ) {
+            this.session.set('@extollo:auth.intention', this.request.url)
+
+            if ( this.routing.hasNamedRoute('@auth:login') ) {
+                return redirect(this.routing.getNamedPath('@auth:login').toRemote)
+            } else {
                 return error(new NotAuthorizedError(), HTTPStatus.FORBIDDEN)
             }
         }
     }
+}

src/auth/middleware/GuestRequiredMiddleware.ts

@@ -1,19 +1,30 @@
 import {Middleware} from '../../http/routing/Middleware'
 import {Inject, Injectable} from '../../di'
-import {SecurityContext} from '../SecurityContext'
+import {SecurityContext} from '../context/SecurityContext'
 import {ResponseObject} from '../../http/routing/Route'
 import {error} from '../../http/response/ErrorResponseFactory'
 import {NotAuthorizedError} from '../NotAuthorizedError'
 import {HTTPStatus} from '../../util'
+import {Routing} from '../../service/Routing'
+import {redirect} from '../../http/response/RedirectResponseFactory'
+
+// TODO handle JSON and non-web
 
 @Injectable()
 export class GuestRequiredMiddleware extends Middleware {
     @Inject()
     protected readonly security!: SecurityContext
 
+    @Inject()
+    protected readonly routing!: Routing
+
     async apply(): Promise<ResponseObject> {
         if ( this.security.hasUser() ) {
+            if ( this.routing.hasNamedRoute('@auth.redirectFromGuest') ) {
+                return redirect(this.routing.getNamedPath('@auth.redirectFromGuest').toRemote)
+            } else {
                 return error(new NotAuthorizedError(), HTTPStatus.FORBIDDEN)
             }
         }
     }
+}

src/auth/middleware/ScopeRequiredMiddleware.ts

@@ -0,0 +1,33 @@
+import {Middleware} from '../../http/routing/Middleware'
+import {ResponseObject} from '../../http/routing/Route'
+import {OAuth2Token} from '../server/types'
+import {HTTPError} from '../../http/HTTPError'
+import {HTTPStatus, Pipeline} from '../../util'
+import {Request} from '../../http/lifecycle/Request'
+import {Constructable, Container} from '../../di'
+
+export class ScopeRequiredMiddleware extends Middleware {
+    constructor(
+        protected readonly request: Request,
+        protected readonly scope: string,
+    ) {
+        super(request)
+    }
+
+    apply(): ResponseObject {
+        if ( !this.request.hasInstance(OAuth2Token) ) {
+            throw new HTTPError(HTTPStatus.UNAUTHORIZED, 'Must specify an OAuth2 token.')
+        }
+
+        const token: OAuth2Token = this.request.getExistingInstance(OAuth2Token)
+        if ( typeof token.scope !== 'undefined' && token.scope !== this.scope ) {
+            throw new HTTPError(HTTPStatus.UNAUTHORIZED, 'Insufficient token permissions (requires: ' + this.scope + ')')
+        }
+    }
+}
+
+export const scope = (name: string): Constructable<ScopeRequiredMiddleware> => {
+    return new Pipeline<Container, ScopeRequiredMiddleware>(
+        container => container.make(ScopeRequiredMiddleware, container, name),
+    )
+}

src/auth/middleware/SessionAuthMiddleware.ts

@@ -1,12 +1,11 @@
 import {Middleware} from '../../http/routing/Middleware'
 import {Inject, Injectable} from '../../di'
-import {ResponseObject} from '../../http/routing/Route'
 import {Config} from '../../service/Config'
+import {Logging} from '../../service/Logging'
 import {AuthenticatableRepository} from '../types'
-import {SessionSecurityContext} from '../contexts/SessionSecurityContext'
+import {ResponseObject} from '../../http/routing/Route'
-import {SecurityContext} from '../SecurityContext'
+import {SessionSecurityContext} from '../context/SessionSecurityContext'
-import {ORMUserRepository} from '../orm/ORMUserRepository'
+import {SecurityContext} from '../context/SecurityContext'
-import {AuthConfig, AuthenticatableRepositories} from '../config'
 
 /**
  * Injects a SessionSecurityContext into the request and attempts to
@@ -17,19 +16,14 @@ export class SessionAuthMiddleware extends Middleware {
     @Inject()
     protected readonly config!: Config
 
+    @Inject()
+    protected readonly logging!: Logging
+
     async apply(): Promise<ResponseObject> {
-        const context = <SessionSecurityContext> this.make(SessionSecurityContext, this.getRepository())
+        this.logging.debug('Applying session auth middleware.')
+        const repo = <AuthenticatableRepository> this.make(AuthenticatableRepository)
+        const context = <SessionSecurityContext> this.make(SessionSecurityContext, repo)
         this.request.registerSingletonInstance(SecurityContext, context)
         await context.resume()
     }
-
-    /**
-     * Build the correct AuthenticatableRepository based on the auth config.
-     * @protected
-     */
-    protected getRepository(): AuthenticatableRepository {
-        const config: AuthConfig | undefined = this.config.get('auth')
-        const repo: typeof AuthenticatableRepository = AuthenticatableRepositories[config?.repositories?.session ?? 'orm']
-        return this.make<AuthenticatableRepository>(repo ?? ORMUserRepository)
-    }
 }

src/auth/middleware/TokenAuthMiddleware.ts

@@ -0,0 +1,45 @@
+import {Middleware} from '../../http/routing/Middleware'
+import {Inject, Injectable} from '../../di'
+import {Config} from '../../service/Config'
+import {Logging} from '../../service/Logging'
+import {AuthenticatableRepository} from '../types'
+import {ResponseObject} from '../../http/routing/Route'
+import {SecurityContext} from '../context/SecurityContext'
+import {TokenSecurityContext} from '../context/TokenSecurityContext'
+import {OAuth2Token, oauth2TokenString, TokenRepository} from '../server/types'
+
+/**
+ * Injects a TokenSecurityContext into the request and attempts to
+ * resume the user's authentication.
+ */
+@Injectable()
+export class TokenAuthMiddleware extends Middleware {
+    @Inject()
+    protected readonly config!: Config
+
+    @Inject()
+    protected readonly logging!: Logging
+
+    @Inject()
+    protected readonly tokens!: TokenRepository
+
+    async apply(): Promise<ResponseObject> {
+        this.logging.debug('Applying token auth middleware.')
+        let tokenString = this.request.getHeader('Authorization')
+        if ( Array.isArray(tokenString) ) {
+            tokenString = tokenString[0]
+        }
+
+        if ( tokenString ) {
+            const token = await this.tokens.decode(oauth2TokenString(tokenString))
+            if ( token ) {
+                this.request.registerSingletonInstance(OAuth2Token, token)
+            }
+        }
+
+        const repo = <AuthenticatableRepository> this.make(AuthenticatableRepository)
+        const context = <TokenSecurityContext> this.make(TokenSecurityContext, repo)
+        this.request.registerSingletonInstance(SecurityContext, context)
+        await context.resume()
+    }
+}

src/auth/orm/ORMUserRepository.ts

@@ -1,41 +0,0 @@
-import {Authenticatable, AuthenticatableIdentifier, AuthenticatableRepository} from '../types'
-import {Awaitable, Maybe} from '../../util'
-import {ORMUser} from './ORMUser'
-import {Injectable} from '../../di'
-
-/**
- * A user repository implementation that looks up users stored in the database.
- */
-@Injectable()
-export class ORMUserRepository extends AuthenticatableRepository {
-    /** Look up the user by their username. */
-    getByIdentifier(id: AuthenticatableIdentifier): Awaitable<Maybe<Authenticatable>> {
-        return ORMUser.query<ORMUser>()
-            .where('username', '=', id)
-            .first()
-    }
-
-    /**
-     * Try to look up a user by the credentials provided.
-     * If a securityIdentifier is specified, look up the user by username.
-     * If username/password are specified, look up the user and verify the password.
-     * @param credentials
-     */
-    async getByCredentials(credentials: Record<string, string>): Promise<Maybe<Authenticatable>> {
-        if ( credentials.securityIdentifier ) {
-            return ORMUser.query<ORMUser>()
-                .where('username', '=', credentials.securityIdentifier)
-                .first()
-        }
-
-        if ( credentials.username && credentials.password ) {
-            const user = await ORMUser.query<ORMUser>()
-                .where('username', '=', credentials.username)
-                .first()
-
-            if ( user && await user.verifyPassword(credentials.password) ) {
-                return user
-            }
-        }
-    }
-}

src/auth/provider/LoginProvider.ts

@@ -0,0 +1,74 @@
+import {Request} from '../../http/lifecycle/Request'
+import {ResponseObject, Route} from '../../http/routing/Route'
+import {GuestRequiredMiddleware} from '../middleware/GuestRequiredMiddleware'
+import {AuthRequiredMiddleware} from '../middleware/AuthRequiredMiddleware'
+import {Inject, Injectable} from '../../di'
+import {SecurityContext} from '../context/SecurityContext'
+import {redirect} from '../../http/response/RedirectResponseFactory'
+import {RequestLocalStorage} from '../../http/RequestLocalStorage'
+import {Session} from '../../http/session/Session'
+
+export interface LoginProviderConfig {
+    default: boolean,
+    allow?: {
+        login?: boolean,
+        registration?: boolean,
+    },
+}
+
+@Injectable()
+export abstract class LoginProvider<TConfig extends LoginProviderConfig> {
+    @Inject()
+    protected readonly request!: RequestLocalStorage
+
+    protected get security(): SecurityContext {
+        return this.request.get().make(SecurityContext)
+    }
+
+    constructor(
+        protected name: string,
+        protected config: TConfig,
+    ) {}
+
+    public routes(): void {
+        Route.get('login')
+            .alias(`@auth:${this.name}:login`)
+            .pipe(line => line.when(this.config.default, route => route.alias('@auth:login')))
+            .pre(GuestRequiredMiddleware)
+            .passingRequest()
+            .handledBy(this.login.bind(this))
+
+        Route.any('logout')
+            .alias(`@auth:${this.name}:logout`)
+            .pipe(line => line.when(this.config.default, route => route.alias('@auth:logout')))
+            .pre(AuthRequiredMiddleware)
+            .passingRequest()
+            .handledBy(this.logout.bind(this))
+
+        Route.get('register')
+            .alias(`@auth:${this.name}:register`)
+            .pipe(line => line.when(this.config.default, route => route.alias('@auth:register')))
+            .pre(GuestRequiredMiddleware)
+            .passingRequest()
+            .handledBy(this.registration.bind(this))
+    }
+
+    public abstract login(request: Request): ResponseObject
+
+    public abstract logout(request: Request): ResponseObject
+
+    public registration(request: Request): ResponseObject {
+        return this.login(request)
+    }
+
+    protected redirectToIntendedRoute(): ResponseObject {
+        const intent = this.request
+            .get()
+            .make<Session>(Session)
+            .safe('@extollo:auth.intention')
+            .or('/')
+            .string()
+
+        return redirect(intent)
+    }
+}

src/auth/provider/basic/BasicLoginAttempt.ts

@@ -0,0 +1,8 @@
+import { z } from 'zod'
+
+export type BasicLoginAttempt = z.infer<typeof BasicLoginAttemptType>
+
+export const BasicLoginAttemptType = z.object({
+    username: z.string().nonempty(),
+    password: z.string().nonempty(),
+})

src/auth/provider/basic/BasicLoginProvider.ts

@@ -0,0 +1,75 @@
+import {LoginProvider, LoginProviderConfig} from '../LoginProvider'
+import {ResponseObject, Route} from '../../../http/routing/Route'
+import {view} from '../../../http/response/ViewResponseFactory'
+import {Valid, Validator} from '../../../validation/Validator'
+import {BasicLoginAttempt, BasicLoginAttemptType} from './BasicLoginAttempt'
+import {BasicRegistrationAttempt, BasicRegistrationAttemptType} from './BasicRegistrationAttempt'
+
+/**
+ * LoginProvider implementation that provides basic username/password login.
+ */
+export class BasicLoginProvider extends LoginProvider<LoginProviderConfig> {
+    public routes(): void {
+        super.routes()
+
+        Route.post('/login')
+            .alias(`@auth:${this.name}:login.submit`)
+            .input(Validator.fromSchema<BasicLoginAttempt>(BasicLoginAttemptType))
+            .handledBy((...p) => this.attemptLogin(...p))
+
+        Route.post('/register')
+            .alias(`@auth:${this.name}:register.submit`)
+            .input(Validator.fromSchema<BasicRegistrationAttempt>(BasicRegistrationAttemptType))
+            .handledBy((...p) => this.attemptRegistration(...p))
+    }
+
+    public login(): ResponseObject {
+        return view('@extollo:auth:login')
+    }
+
+    public async logout(): Promise<ResponseObject> {
+        await this.security.flush()
+        return view('@extollo:auth:logout')
+    }
+
+    public registration(): ResponseObject {
+        return view('@extollo:auth:register')
+    }
+
+    /** Attempt to authenticate the user with a username/password. */
+    public async attemptLogin(attempt: Valid<BasicLoginAttempt>): Promise<ResponseObject> {
+        const user = await this.security.repository.getByIdentifier(attempt.username)
+        if ( !user ) {
+            throw new Error('TODO')
+        }
+
+        if ( !(await user.validateCredential(attempt.password)) ) {
+            throw new Error('TODO')
+        }
+
+        await this.security.authenticate(user)
+        return this.redirectToIntendedRoute()
+    }
+
+    /** Attempt to register the user with a username/password. */
+    public async attemptRegistration(attempt: Valid<BasicRegistrationAttempt>): Promise<ResponseObject> {
+        const existingUser = await this.security.repository.getByIdentifier(attempt.username)
+        if ( existingUser ) {
+            throw new Error('TODO')
+        }
+
+        if ( attempt.password !== attempt.passwordConfirmation ) {
+            throw new Error('TODO')
+        }
+
+        const user = await this.security.repository.createFromCredentials(attempt.username, attempt.password)
+        ;(user as any).firstName = attempt.firstName
+        ;(user as any).lastName = attempt.lastName
+        if ( typeof (user as any).save === 'function' ) {
+            await (user as any).save()
+        }
+
+        await this.security.authenticate(user)
+        return this.redirectToIntendedRoute()
+    }
+}

src/auth/provider/basic/BasicRegistrationAttempt.ts

@@ -0,0 +1,19 @@
+import { z } from 'zod'
+
+export type BasicRegistrationAttempt = z.infer<typeof BasicRegistrationAttemptType>
+
+export const BasicRegistrationAttemptType = z.object({
+    firstName: z.string().nonempty(),
+
+    lastName: z.string().nonempty(),
+
+    username: z.string().nonempty(),
+
+    password: z.string()
+        .nonempty()
+        .min(8),
+
+    passwordConfirmation: z.string()
+        .nonempty()
+        .min(8),
+})

src/auth/provider/oauth/CoreIDLoginProvider.ts

@@ -0,0 +1,99 @@
+/* eslint camelcase: 0 */
+import {OAuth2LoginProvider, OAuth2LoginProviderConfig} from './OAuth2LoginProvider'
+import {Authenticatable} from '../../types'
+import {Request} from '../../../http/lifecycle/Request'
+import {ErrorWithContext, uuid4, fetch} from '../../../util'
+
+/**
+ * OAuth2LoginProvider implementation that authenticates users against a
+ * Starship CoreID server.
+ */
+export class CoreIDLoginProvider extends OAuth2LoginProvider<OAuth2LoginProviderConfig> {
+    protected async callback(request: Request): Promise<Authenticatable> {
+        // Get authentication_code from the request
+        const code = request.safe('code').string()
+
+        // Get OAuth2 token from CoreID
+        const token = await this.getToken(code)
+
+        // Get user from endpoint
+        const userData = await this.getUserData(token)
+
+        // Return authenticatable instance
+        const existing = await this.security.repository.getByIdentifier(userData.uid)
+        if ( existing ) {
+            this.updateUser(existing, userData)
+            return existing
+        }
+
+        const user = await this.security.repository.createFromCredentials(userData.uid, uuid4())
+        this.updateUser(user, userData)
+        return user
+    }
+
+    /** Given an access token, look up the associated user's information. */
+    protected async getUserData(token: string): Promise<any> {
+        const userResponse = await fetch(
+            this.config.userUrl,
+            {
+                method: 'GET',
+                headers: {
+                    Authorization: `Bearer ${token}`,
+                },
+            },
+        )
+
+        const userData: any = await userResponse.json()
+        if ( !userData?.data?.uid ) {
+            throw new ErrorWithContext('Unable to extract user from response', {
+                userData,
+            })
+        }
+
+        return userData.data
+    }
+
+    /** Given a login code, redeem it for an access token. */
+    protected async getToken(code: string): Promise<string> {
+        const body: string[] = [
+            'code=' + encodeURIComponent(code),
+            'client_id=' + encodeURIComponent(this.config.clientId),
+            'client_secret=' + encodeURIComponent(this.config.clientSecret),
+            'grant_type=authorization_code',
+        ]
+
+        const response = await fetch(
+            this.config.tokenUrl,
+            {
+                method: 'POST',
+                headers: {
+                    'Content-Type': 'application/x-www-form-urlencoded',
+                },
+                body: body.join('&'),
+            },
+        )
+
+        const data = await response.json()
+        const token = (data as any).access_token
+        if ( !token ) {
+            throw new ErrorWithContext('Unable to obtain access token from response', {
+                data,
+            })
+        }
+
+        return String(token)
+    }
+
+    /** Update values on the Authenticatable from user data. */
+    // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
+    protected updateUser(user: any, data: any): void {
+        user.firstName = data.first_name
+        user.lastName = data.last_name
+        user.email = data.email
+        user.tagline = data.tagline
+        user.photoUrl = data.profile_photo
+        if ( typeof user.save === 'function' ) {
+            user.save()
+        }
+    }
+}

src/auth/provider/oauth/OAuth2LoginProvider.ts

@@ -0,0 +1,98 @@
+import {LoginProvider, LoginProviderConfig} from '../LoginProvider'
+import {ResponseObject, Route} from '../../../http/routing/Route'
+import {Inject, Injectable} from '../../../di'
+import {Routing} from '../../../service/Routing'
+import {GuestRequiredMiddleware} from '../../middleware/GuestRequiredMiddleware'
+import {redirect} from '../../../http/response/RedirectResponseFactory'
+import {view} from '../../../http/response/ViewResponseFactory'
+import {Request} from '../../../http/lifecycle/Request'
+import {Awaitable} from '../../../util'
+import {Authenticatable} from '../../types'
+
+export interface OAuth2LoginProviderConfig extends LoginProviderConfig {
+    displayName: string,
+    clientId: string|number
+    clientSecret: string
+    loginUrl: string
+    loginMessage?: string
+    logoutUrl?: string
+    tokenUrl: string,
+    userUrl: string,
+}
+
+/**
+ * LoginProvider implementation for OAuth2-based logins.
+ */
+@Injectable()
+export abstract class OAuth2LoginProvider<TConfig extends OAuth2LoginProviderConfig> extends LoginProvider<TConfig> {
+    @Inject()
+    protected readonly routing!: Routing
+
+    public routes(): void {
+        super.routes()
+
+        Route.any('redirect')
+            .alias(`@auth:${this.name}:redirect`)
+            .pre(GuestRequiredMiddleware)
+            .handledBy(() => redirect(this.getLoginUrl()))
+
+        Route.any('callback')
+            .alias(`@auth:${this.name}:callback`)
+            .pre(GuestRequiredMiddleware)
+            .passingRequest()
+            .handledBy(this.handleCallback.bind(this))
+    }
+
+    protected async handleCallback(request: Request): Promise<ResponseObject> {
+        const user = await this.callback(request)
+        if ( user ) {
+            await this.security.authenticate(user)
+            return this.redirectToIntendedRoute()
+        }
+
+        return redirect(this.routing.getNamedPath(`@auth:${this.name}:login`).toRemote)
+    }
+
+    /**
+     * After redirecting back from the OAuth2 server, look up the user information.
+     * @param request
+     * @protected
+     */
+    protected abstract callback(request: Request): Awaitable<Authenticatable>
+
+    public login(): ResponseObject {
+        const buttonUrl = this.routing
+            .getNamedPath(`@auth:${this.name}:redirect`)
+            .toRemote
+
+        return view('@extollo:auth:message', {
+            message: this.config.loginMessage ?? `Sign-in with ${this.config.displayName} to continue`,
+            buttonText: 'Sign-in',
+            buttonUrl,
+        })
+    }
+
+    public async logout(): Promise<ResponseObject> {
+        await this.security.flush()
+
+        if ( this.config.logoutUrl ) {
+            return redirect(this.config.logoutUrl)
+        }
+
+        return view('@extollo:auth:message', {
+            message: 'You have been signed-out',
+        })
+    }
+
+    /**
+     * Get the URL where the user should be redirected to sign-in.
+     * @protected
+     */
+    protected getLoginUrl(): string {
+        const callbackRoute = this.routing.getNamedPath(`@auth:${this.name}:callback`)
+
+        return this.config.loginUrl
+            .replace(/%c/g, String(this.config.clientId))
+            .replace(/%r/g, callbackRoute.toRemote)
+    }
+}

src/auth/repository/AuthenticatableRepositoryFactory.ts

@@ -0,0 +1,23 @@
+import {Instantiable, FactoryProducer} from '../../di'
+import {AuthenticatableRepository} from '../types'
+import {ORMUserRepository} from './orm/ORMUserRepository'
+import {ConfiguredSingletonFactory} from '../../di/factory/ConfiguredSingletonFactory'
+
+/**
+ * A dependency injection factory that matches the abstract ClientRepository class
+ * and produces an instance of the configured repository driver implementation.
+ */
+@FactoryProducer()
+export class AuthenticatableRepositoryFactory extends ConfiguredSingletonFactory<AuthenticatableRepository> {
+    protected getConfigKey(): string {
+        return 'auth.storage'
+    }
+
+    protected getDefaultImplementation(): Instantiable<AuthenticatableRepository> {
+        return ORMUserRepository
+    }
+
+    protected getAbstractImplementation(): any {
+        return AuthenticatableRepository
+    }
+}

src/auth/repository/orm/ORMUser.ts

@@ -1,8 +1,8 @@
-import {Field, FieldType, Model} from '../../orm'
-import {Authenticatable, AuthenticatableIdentifier} from '../types'
-import {Injectable} from '../../di'
 import * as bcrypt from 'bcrypt'
-import {Awaitable, JSONState} from '../../util'
+import {Field, FieldType, Model} from '../../../orm'
+import {Authenticatable, AuthenticatableIdentifier} from '../../types'
+import {Injectable} from '../../../di'
+import {Awaitable, JSONState} from '../../../util'
 
 /**
  * A basic ORM-driven user class.
@@ -24,21 +24,30 @@ export class ORMUser extends Model<ORMUser> implements Authenticatable {
 
     /** The user's first name. */
     @Field(FieldType.varchar, 'first_name')
-    public firstName!: string
+    public firstName?: string
 
     /** The user's last name. */
     @Field(FieldType.varchar, 'last_name')
-    public lastName!: string
+    public lastName?: string
 
     /** The hashed and salted password of the user. */
     @Field(FieldType.varchar, 'password_hash')
     public passwordHash!: string
 
     /** Human-readable display name of the user. */
-    getDisplayIdentifier(): string {
+    getDisplay(): string {
+        if ( this.firstName || this.lastName ) {
             return `${this.firstName} ${this.lastName}`
         }
 
+        return this.username
+    }
+
+    /** Globally-unique identifier of the user. */
+    getUniqueIdentifier(): AuthenticatableIdentifier {
+        return `user-${this.userId}`
+    }
+
     /** Unique identifier of the user. */
     getIdentifier(): AuthenticatableIdentifier {
         return this.username
@@ -54,6 +63,10 @@ export class ORMUser extends Model<ORMUser> implements Authenticatable {
         this.passwordHash = await bcrypt.hash(password, 10)
     }
 
+    validateCredential(credential: string): Awaitable<boolean> {
+        return this.verifyPassword(credential)
+    }
+
     async dehydrate(): Promise<JSONState> {
         return this.toQueryRow()
     }

src/auth/repository/orm/ORMUserRepository.ts

@@ -0,0 +1,51 @@
+import {
+    Authenticatable,
+    AuthenticatableIdentifier,
+    AuthenticatableRepository,
+} from '../../types'
+import {Awaitable, Maybe, uuid4} from '../../../util'
+import {ORMUser} from './ORMUser'
+import {Container, Inject, Injectable} from '../../../di'
+import {AuthenticatableAlreadyExistsError} from '../../AuthenticatableAlreadyExistsError'
+
+/**
+ * A user repository implementation that looks up users stored in the database.
+ */
+@Injectable()
+export class ORMUserRepository extends AuthenticatableRepository {
+    @Inject('injector')
+    protected readonly injector!: Container
+
+    /** Look up the user by their username. */
+    getByIdentifier(id: AuthenticatableIdentifier): Awaitable<Maybe<Authenticatable>> {
+        return (this.injector.getStaticOverride(ORMUser) as typeof ORMUser).query<ORMUser>()
+            .where('username', '=', id)
+            .first()
+    }
+
+    /** Returns true if this repository supports registering users. */
+    supportsRegistration(): boolean {
+        return true
+    }
+
+    /** Create a user in this repository from basic credentials. */
+    async createFromCredentials(username: string, password: string): Promise<Authenticatable> {
+        if ( await this.getByIdentifier(username) ) {
+            throw new AuthenticatableAlreadyExistsError(`Authenticatable already exists with credentials.`, {
+                username,
+            })
+        }
+
+        const user = <ORMUser> this.injector.makeByStaticOverride(ORMUser)
+        user.username = username
+        await user.setPassword(password)
+        await user.save()
+
+        return user
+    }
+
+    /** Create a user in this repository from an external Authenticatable instance. */
+    async createFromExternal(user: Authenticatable): Promise<Authenticatable> {
+        return this.createFromCredentials(String(user.getUniqueIdentifier()), uuid4())
+    }
+}

src/auth/serial/AuthenticationEventSerializer.ts

@@ -0,0 +1,54 @@
+import {BaseSerializer, ObjectSerializer, SerialPayload} from '../../support/bus'
+import {AuthenticationEvent} from '../event/AuthenticationEvent'
+import {ErrorWithContext, JSONState} from '../../util'
+import {Authenticatable} from '../types'
+import {StaticInstantiable} from '../../di'
+import {SecurityContext} from '../context/SecurityContext'
+import {UserAuthenticatedEvent} from '../event/UserAuthenticatedEvent'
+import {UserAuthenticationResumedEvent} from '../event/UserAuthenticationResumedEvent'
+import {UserFlushedEvent} from '../event/UserFlushedEvent'
+
+export interface AuthenticationEventSerialPayload extends JSONState {
+    user: SerialPayload<Authenticatable, JSONState>
+    eventName: string
+}
+
+@ObjectSerializer()
+export class AuthenticationEventSerializer extends BaseSerializer<AuthenticationEvent, AuthenticationEventSerialPayload> {
+    protected async decodeSerial(serial: AuthenticationEventSerialPayload): Promise<AuthenticationEvent> {
+        const user = await this.getSerialization().decode(serial.user)
+        const context = await this.getRequest().make(SecurityContext)
+
+        const EventClass = this.getEventClass(serial.eventName)
+        return new EventClass(user, context)
+    }
+
+    protected async encodeActual(actual: AuthenticationEvent): Promise<AuthenticationEventSerialPayload> {
+        return {
+            eventName: actual.eventName,
+            user: await this.getSerialization().encode(actual.user),
+        }
+    }
+
+    protected getName(): string {
+        return '@extollo/lib:AuthenticationEventSerializer'
+    }
+
+    matchActual(some: AuthenticationEvent): boolean {
+        return some instanceof AuthenticationEvent
+    }
+
+    protected getEventClass(name: string): StaticInstantiable<AuthenticationEvent> {
+        if ( name === '@extollo/lib:UserAuthenticatedEvent' ) {
+            return UserAuthenticatedEvent
+        } else if ( name === '@extollo/lib:UserAuthenticationResumedEvent' ) {
+            return UserAuthenticationResumedEvent
+        } else if ( name === '@extollo/lib:UserFlushedEvent' ) {
+            return UserFlushedEvent
+        }
+
+        throw new ErrorWithContext('Unable to map event name to AuthenticationEvent implementation', {
+            eventName: name,
+        })
+    }
+}

src/auth/server/OAuth2Server.ts

@@ -0,0 +1,241 @@
+import {Controller} from '../../http/Controller'
+import {Inject, Injectable} from '../../di'
+import {ResponseObject, Route} from '../../http/routing/Route'
+import {Request} from '../../http/lifecycle/Request'
+import {Session} from '../../http/session/Session'
+import {
+    ClientRepository,
+    OAuth2Client,
+    OAuth2FlowType,
+    OAuth2Scope,
+    RedemptionCodeRepository,
+    ScopeRepository,
+    TokenRepository,
+} from './types'
+import {HTTPError} from '../../http/HTTPError'
+import {HTTPStatus, Maybe} from '../../util'
+import {view} from '../../http/response/ViewResponseFactory'
+import {SecurityContext} from '../context/SecurityContext'
+import {redirect} from '../../http/response/RedirectResponseFactory'
+import {AuthRequiredMiddleware} from '../middleware/AuthRequiredMiddleware'
+import {one} from '../../http/response/api'
+import {AuthenticatableRepository} from '../types'
+import {Logging} from '../../service/Logging'
+
+export enum GrantType {
+    Client = 'client_credentials',
+    Password = 'password',
+    Code = 'authorization_code',
+}
+
+export const grantTypes: GrantType[] = [GrantType.Client, GrantType.Code, GrantType.Password]
+
+@Injectable()
+export class OAuth2Server extends Controller {
+    @Inject()
+    protected readonly logging!: Logging
+
+    public static routes(): void {
+        Route.get('/oauth2/authorize')
+            .alias('@oauth2:authorize')
+            .pre(AuthRequiredMiddleware)
+            .passingRequest()
+            .calls<OAuth2Server>(OAuth2Server, x => x.promptForAuthorization)
+
+        Route.post('/oauth2/authorize')
+            .alias('@oauth2:authorize:submit')
+            .pre(AuthRequiredMiddleware)
+            .passingRequest()
+            .calls<OAuth2Server>(OAuth2Server, x => x.authorizeAndRedirect)
+
+        Route.post('/oauth2/token')
+            .alias('@oauth2:token')
+            .passingRequest()
+            .calls<OAuth2Server>(OAuth2Server, x => x.issue)
+    }
+
+    async issue(request: Request): Promise<ResponseObject> {
+        const grant = request.safe('grant_type').in(grantTypes)
+        const client = await this.getClientFromRequest(request)
+
+        if ( grant === GrantType.Client ) {
+            return this.issueFromClient(request, client)
+        } else if ( grant === GrantType.Code ) {
+            return this.issueFromCode(request, client)
+        } else if ( grant === GrantType.Password ) {
+            return this.issueFromCredential(request, client)
+        }
+    }
+
+    protected async issueFromCredential(request: Request, client: OAuth2Client): Promise<ResponseObject> {
+        const scope = String(this.request.input('scope') ?? '') || undefined
+        const username = this.request.safe('username').string()
+        const password = this.request.safe('password').string()
+
+        this.logging.verbose('Attempting password grant token issue...')
+        this.logging.verbose({
+            scope,
+            username,
+            client,
+        })
+
+        const userRepo = <AuthenticatableRepository> request.make(AuthenticatableRepository)
+        const user = await userRepo.getByIdentifier(username)
+        if ( !user || !(await user.validateCredential(password)) ) {
+            throw new HTTPError(HTTPStatus.BAD_REQUEST)
+        }
+
+        const tokenRepo = <TokenRepository> request.make(TokenRepository)
+        const token = await tokenRepo.issue(user, client, scope)
+        return one({
+            token: await tokenRepo.encode(token),
+        })
+    }
+
+    protected async issueFromCode(request: Request, client: OAuth2Client): Promise<ResponseObject> {
+        const scope = String(this.request.input('scope') ?? '') || undefined
+        const codeRepo = <RedemptionCodeRepository> request.make(RedemptionCodeRepository)
+        const codeString = request.safe('code').string()
+        const code = await codeRepo.find(codeString)
+        if ( !code ) {
+            throw new HTTPError(HTTPStatus.BAD_REQUEST)
+        }
+
+        const userRepo = <AuthenticatableRepository> request.make(AuthenticatableRepository)
+        const user = await userRepo.getByIdentifier(code.userId)
+        if ( !user ) {
+            throw new HTTPError(HTTPStatus.BAD_REQUEST)
+        }
+
+        const tokenRepo = <TokenRepository> request.make(TokenRepository)
+        const token = await tokenRepo.issue(user, client, scope)
+        return one({
+            token: await tokenRepo.encode(token),
+        })
+    }
+
+    protected async issueFromClient(request: Request, client: OAuth2Client): Promise<ResponseObject> {
+        const scope = String(this.request.input('scope') ?? '') || undefined
+
+        const tokenRepo = <TokenRepository> request.make(TokenRepository)
+        const token = await tokenRepo.issue(undefined, client, scope)
+        return one({
+            token: await tokenRepo.encode(token),
+        })
+    }
+
+    protected async getClientFromRequest(request: Request): Promise<OAuth2Client> {
+        const authParts = String(request.getHeader('Authorization')).split(':')
+        if ( authParts.length !== 2 ) {
+            throw new HTTPError(HTTPStatus.BAD_REQUEST)
+        }
+
+        this.logging.debug('Client auth parts:')
+        this.logging.debug(authParts)
+
+        const clientRepo = <ClientRepository> request.make(ClientRepository)
+        const [clientId, clientSecret] = authParts
+        const client = await clientRepo.find(clientId)
+
+        this.logging.verbose('Client:')
+        this.logging.verbose(client)
+
+        if ( !client || client.secret !== clientSecret ) {
+            throw new HTTPError(HTTPStatus.UNAUTHORIZED)
+        }
+
+        return client
+    }
+
+    async authorizeAndRedirect(request: Request): Promise<ResponseObject> {
+        // Look up the client in the client repo
+        const session = <Session> request.make(Session)
+        const client = await this.getClientFromRequest(request)
+        const flowType = session.safe('oauth2.authorize.flow').in(client.allowedFlows)
+        if ( flowType === OAuth2FlowType.code ) {
+            return this.authorizeCodeFlow(request, client)
+        }
+    }
+
+    protected async authorizeCodeFlow(request: Request, client: OAuth2Client): Promise<ResponseObject> {
+        const session = <Session> request.make(Session)
+        const security = <SecurityContext> request.make(SecurityContext)
+        const codeRepository = <RedemptionCodeRepository> request.make(RedemptionCodeRepository)
+
+        const user = security.user()
+        const scope = session.get('oauth2.authorize.scope')
+        const redirectUri = session.safe('oauth2.authorize.redirectUri').in(client.allowedRedirectUris)
+
+        // FIXME store authorization
+
+        const code = await codeRepository.issue(user, client, scope)
+        const uri = new URL(redirectUri)
+        uri.searchParams.set('code', code.code)
+        return redirect(uri)
+    }
+
+    async promptForAuthorization(request: Request): Promise<ResponseObject> {
+        // Look up the client in the client repo
+        const clientId = request.safe('client_id').string()
+        const client = await this.getClient(request, clientId)
+
+        // Make sure the requested flow type is valid for this client
+        const session = <Session> request.make(Session)
+        const flowType = request.safe('response_type').in(client.allowedFlows)
+        const redirectUri = request.safe('redirect_uri').in(client.allowedRedirectUris)
+        session.set('oauth2.authorize.clientId', client.id)
+        session.set('oauth2.authorize.flow', flowType)
+        session.set('oauth2.authorize.redirectUri', redirectUri)
+
+        // Set the state if necessary
+        const state = request.input('state') || ''
+        if ( state ) {
+            session.set('oauth2.authorize.state', String(state))
+        } else {
+            session.forget('oauth2.authorize.state')
+        }
+
+        // If the request specified a scope, validate it and set it in the session
+        const scope = await this.getScope(request, client)
+
+        // Show a view prompting the user to approve the access
+        return view('@extollo:oauth2:authorize', {
+            clientName: client.display,
+            scopeDescription: scope?.description,
+            redirectDomain: (new URL(redirectUri)).host,
+        })
+    }
+
+    protected async getClient(request: Request, clientId: string): Promise<OAuth2Client> {
+        const clientRepo = <ClientRepository> request.make(ClientRepository)
+        const client = await clientRepo.find(clientId)
+        if ( !client ) {
+            throw new HTTPError(HTTPStatus.BAD_REQUEST, 'Invalid client configuration', {
+                clientId,
+            })
+        }
+
+        return client
+    }
+
+    protected async getScope(request: Request, client: OAuth2Client): Promise<Maybe<OAuth2Scope>> {
+        const session = <Session> request.make(Session)
+        const scopeName = String(request.input('scope') || '')
+        let scope: Maybe<OAuth2Scope> = undefined
+        if ( scopeName ) {
+            const scopeRepo = <ScopeRepository> request.make(ScopeRepository)
+            scope = await scopeRepo.findByName(scopeName)
+            if ( !scope || !client.allowedScopeIds.includes(scope.id) ) {
+                throw new HTTPError(HTTPStatus.BAD_REQUEST, 'Invalid scope', {
+                    scopeName,
+                })
+            }
+
+            session.set('oauth2.authorize.scope', scope.id)
+        } else {
+            session.forget('oauth2.authorize.state')
+        }
+
+        return scope
+    }
+}

src/auth/server/models/OAuth2TokenModel.ts

@@ -0,0 +1,30 @@
+import {Field, FieldType, Model} from '../../../orm'
+import {OAuth2Token} from '../types'
+
+export class OAuth2TokenModel extends Model<OAuth2TokenModel> implements OAuth2Token {
+    public static table = 'oauth2_tokens'
+
+    public static key = 'oauth2_token_id'
+
+    @Field(FieldType.serial, 'oauth2_token_id')
+    protected oauth2TokenId!: number
+
+    public get id(): string {
+        return String(this.oauth2TokenId)
+    }
+
+    @Field(FieldType.varchar, 'user_id')
+    public userId?: string
+
+    @Field(FieldType.varchar, 'client_id')
+    public clientId!: string
+
+    @Field(FieldType.timestamp)
+    public issued!: Date
+
+    @Field(FieldType.timestamp)
+    public expires!: Date
+
+    @Field(FieldType.varchar)
+    public scope?: string
+}

src/auth/server/repositories/CacheRedemptionCodeRepository.ts

@@ -0,0 +1,33 @@
+import {isOAuth2RedemptionCode, OAuth2Client, OAuth2RedemptionCode, RedemptionCodeRepository} from '../types'
+import {Inject, Injectable} from '../../../di'
+import {Cache, Maybe, uuid4} from '../../../util'
+import {Authenticatable} from '../../types'
+
+@Injectable()
+export class CacheRedemptionCodeRepository extends RedemptionCodeRepository {
+    @Inject()
+    protected readonly cache!: Cache
+
+    async find(codeString: string): Promise<Maybe<OAuth2RedemptionCode>> {
+        const cacheKey = `@extollo:oauth2:redemption:${codeString}`
+        if ( await this.cache.has(cacheKey) ) {
+            const code = await this.cache.safe(cacheKey).then(x => x.json())
+            if ( isOAuth2RedemptionCode(code) ) {
+                return code
+            }
+        }
+    }
+
+    async issue(user: Authenticatable, client: OAuth2Client, scope?: string): Promise<OAuth2RedemptionCode> {
+        const code = {
+            scope,
+            clientId: client.id,
+            userId: user.getUniqueIdentifier(),
+            code: uuid4(),
+        }
+
+        const cacheKey = `@extollo:oauth2:redemption:${code.code}`
+        await this.cache.put(cacheKey, JSON.stringify(code))
+        return code
+    }
+}

src/auth/server/repositories/ClientRepositoryFactory.ts

@@ -0,0 +1,23 @@
+import {Instantiable, FactoryProducer} from '../../../di'
+import {ClientRepository} from '../types'
+import {ConfigClientRepository} from './ConfigClientRepository'
+import {ConfiguredSingletonFactory} from '../../../di/factory/ConfiguredSingletonFactory'
+
+/**
+ * A dependency injection factory that matches the abstract ClientRepository class
+ * and produces an instance of the configured repository driver implementation.
+ */
+@FactoryProducer()
+export class ClientRepositoryFactory extends ConfiguredSingletonFactory<ClientRepository> {
+    protected getConfigKey(): string {
+        return 'oauth2.repository.client'
+    }
+
+    protected getDefaultImplementation(): Instantiable<ClientRepository> {
+        return ConfigClientRepository
+    }
+
+    protected getAbstractImplementation(): any {
+        return ClientRepository
+    }
+}

src/auth/server/repositories/ConfigClientRepository.ts

@@ -0,0 +1,22 @@
+import {ClientRepository, OAuth2Client, isOAuth2Client} from '../types'
+import {Awaitable, ErrorWithContext, Maybe} from '../../../util'
+import {Inject, Injectable} from '../../../di'
+import {Config} from '../../../service/Config'
+
+@Injectable()
+export class ConfigClientRepository extends ClientRepository {
+    @Inject()
+    protected readonly config!: Config
+
+    find(id: string): Awaitable<Maybe<OAuth2Client>> {
+        const client = this.config.get(`oauth2.clients.${id}`)
+        if ( !isOAuth2Client(client) ) {
+            throw new ErrorWithContext('Invalid OAuth2 client configuration', {
+                id,
+                client,
+            })
+        }
+
+        return client
+    }
+}

src/auth/server/repositories/ConfigScopeRepository.ts

@@ -0,0 +1,21 @@
+import {isOAuth2Scope, OAuth2Scope, ScopeRepository} from '../types'
+import {Inject, Injectable} from '../../../di'
+import {Config} from '../../../service/Config'
+import {Awaitable, Maybe} from '../../../util'
+
+@Injectable()
+export class ConfigScopeRepository extends ScopeRepository {
+    @Inject()
+    protected readonly config!: Config
+
+    find(id: string): Awaitable<Maybe<OAuth2Scope>> {
+        const scope = this.config.get(`oauth2.scopes.${id}`)
+        if ( isOAuth2Scope(scope) ) {
+            return scope
+        }
+    }
+
+    findByName(name: string): Awaitable<Maybe<OAuth2Scope>> {
+        return this.find(name)
+    }
+}

src/auth/server/repositories/ORMTokenRepository.ts

@@ -0,0 +1,94 @@
+import {isOAuth2Token, OAuth2Client, OAuth2Token, oauth2TokenString, OAuth2TokenString, TokenRepository} from '../types'
+import {Inject, Injectable} from '../../../di'
+import {ErrorWithContext, Maybe} from '../../../util'
+import {OAuth2TokenModel} from '../models/OAuth2TokenModel'
+import {Config} from '../../../service/Config'
+import * as jwt from 'jsonwebtoken'
+import {Authenticatable} from '../../types'
+import {make} from '../../../make'
+
+@Injectable()
+export class ORMTokenRepository extends TokenRepository {
+    @Inject()
+    protected readonly config!: Config
+
+    async find(id: string): Promise<Maybe<OAuth2Token>> {
+        const idNum = parseInt(id, 10)
+        if ( !isNaN(idNum) ) {
+            return OAuth2TokenModel.query<OAuth2TokenModel>()
+                .whereKey(idNum)
+                .first()
+        }
+    }
+
+    async issue(user: Authenticatable|undefined, client: OAuth2Client, scope?: string): Promise<OAuth2Token> {
+        const expiration = this.config.safe('outh2.token.lifetimeSeconds')
+            .or(60 * 60 * 6)
+            .integer() * 1000
+
+        const token = make<OAuth2TokenModel>(OAuth2TokenModel)
+        token.scope = scope
+        token.clientId = client.id
+        token.issued = new Date()
+        token.expires = new Date(Math.floor(Date.now() + expiration))
+        if ( user ) {
+            token.userId = String(user.getUniqueIdentifier())
+        }
+        await token.save()
+
+        return token
+    }
+
+    async encode(token: OAuth2Token): Promise<OAuth2TokenString> {
+        const secret = this.config.safe('oauth2.secret').string()
+        const payload = {
+            id: token.id,
+            clientId: token.clientId,
+            iat: Math.floor(token.issued.valueOf() / 1000),
+            exp: Math.floor(token.expires.valueOf() / 1000),
+            ...(token.userId ? { userId: token.userId } : {}),
+            ...(token.scope ? { scope: token.scope } : {}),
+        }
+
+        const generated = await new Promise<string>((res, rej) => {
+            jwt.sign(payload, secret, {}, (err, gen) => {
+                if (err || !gen) {
+                    rej(err || new ErrorWithContext('Unable to encode JWT.', {
+                        payload,
+                        gen,
+                    }))
+                } else {
+                    res(gen)
+                }
+            })
+        })
+
+        return oauth2TokenString(generated)
+    }
+
+    async decode(token: OAuth2TokenString): Promise<Maybe<OAuth2Token>> {
+        const secret = this.config.safe('oauth2.secret').string()
+        const decoded = await new Promise<any>((res, rej) => {
+            jwt.verify(token, secret, {}, (err, payload) => {
+                if ( err ) {
+                    rej(err)
+                } else {
+                    res(payload)
+                }
+            })
+        })
+
+        const value = {
+            id: decoded.id,
+            clientId: decoded.clientId,
+            issued: new Date(decoded.iat * 1000),
+            expires: new Date(decoded.exp * 1000),
+            ...(decoded.userId ? { userId: decoded.userId } : {}),
+            ...(decoded.scope ? { scope: decoded.scope } : {}),
+        }
+
+        if ( isOAuth2Token(value) ) {
+            return value
+        }
+    }
+}

src/auth/server/repositories/RedemptionCodeRepositoryFactory.ts

@@ -0,0 +1,23 @@
+import {Instantiable, FactoryProducer} from '../../../di'
+import {RedemptionCodeRepository} from '../types'
+import {CacheRedemptionCodeRepository} from './CacheRedemptionCodeRepository'
+import {ConfiguredSingletonFactory} from '../../../di/factory/ConfiguredSingletonFactory'
+
+/**
+ * A dependency injection factory that matches the abstract RedemptionCodeRepository class
+ * and produces an instance of the configured repository driver implementation.
+ */
+@FactoryProducer()
+export class RedemptionCodeRepositoryFactory extends ConfiguredSingletonFactory<RedemptionCodeRepository> {
+    protected getConfigKey(): string {
+        return 'oauth2.repository.client'
+    }
+
+    protected getDefaultImplementation(): Instantiable<RedemptionCodeRepository> {
+        return CacheRedemptionCodeRepository
+    }
+
+    protected getAbstractImplementation(): any {
+        return RedemptionCodeRepository
+    }
+}

src/auth/server/repositories/ScopeRepositoryFactory.ts

@@ -0,0 +1,23 @@
+import {Instantiable, FactoryProducer} from '../../../di'
+import {ScopeRepository} from '../types'
+import {ConfigScopeRepository} from './ConfigScopeRepository'
+import {ConfiguredSingletonFactory} from '../../../di/factory/ConfiguredSingletonFactory'
+
+/**
+ * A dependency injection factory that matches the abstract ScopeRepository class
+ * and produces an instance of the configured repository driver implementation.
+ */
+@FactoryProducer()
+export class ScopeRepositoryFactory extends ConfiguredSingletonFactory<ScopeRepository> {
+    protected getConfigKey(): string {
+        return 'oauth2.repository.scope'
+    }
+
+    protected getDefaultImplementation(): Instantiable<ScopeRepository> {
+        return ConfigScopeRepository
+    }
+
+    protected getAbstractImplementation(): any {
+        return ScopeRepository
+    }
+}

src/auth/server/repositories/TokenRepositoryFactory.ts

@@ -0,0 +1,23 @@
+import {Instantiable, FactoryProducer} from '../../../di'
+import {TokenRepository} from '../types'
+import {ORMTokenRepository} from './ORMTokenRepository'
+import {ConfiguredSingletonFactory} from '../../../di/factory/ConfiguredSingletonFactory'
+
+/**
+ * A dependency injection factory that matches the abstract TokenRepository class
+ * and produces an instance of the configured repository driver implementation.
+ */
+@FactoryProducer()
+export class TokenRepositoryFactory extends ConfiguredSingletonFactory<TokenRepository> {
+    protected getConfigKey(): string {
+        return 'oauth2.repository.token'
+    }
+
+    protected getDefaultImplementation(): Instantiable<TokenRepository> {
+        return ORMTokenRepository
+    }
+
+    protected getAbstractImplementation(): any {
+        return TokenRepository
+    }
+}

src/auth/server/types.ts

@@ -0,0 +1,179 @@
+import {Awaitable, hasOwnProperty, Maybe, TypeTag} from '../../util'
+import {Authenticatable, AuthenticatableIdentifier} from '../types'
+
+export enum OAuth2FlowType {
+    code = 'code',
+}
+
+// export const oauth2FlowTypes: OAuth2FlowType[] = Object.entries(OAuth2FlowType).map(([_, value]) => value)
+
+export function isOAuth2FlowType(what: unknown): what is OAuth2FlowType {
+    return [OAuth2FlowType.code].includes(what as any)
+}
+
+export interface OAuth2Client {
+    id: string
+    display: string
+    secret: string
+    allowedFlows: OAuth2FlowType[]
+    allowedScopeIds: string[]
+    allowedRedirectUris: string[]
+}
+
+export function isOAuth2Client(what: unknown): what is OAuth2Client {
+    if ( typeof what !== 'object' || what === null ) {
+        return false
+    }
+
+    if (
+        !hasOwnProperty(what, 'id')
+        || !hasOwnProperty(what, 'display')
+        || !hasOwnProperty(what, 'secret')
+        || !hasOwnProperty(what, 'allowedFlows')
+        || !hasOwnProperty(what, 'allowedScopeIds')
+        || !hasOwnProperty(what, 'allowedRedirectUris')
+    ) {
+        return false
+    }
+
+    if ( typeof what.id !== 'string' || typeof what.display !== 'string' || typeof what.secret !== 'string' ) {
+        return false
+    }
+
+    if ( !Array.isArray(what.allowedScopeIds) || !what.allowedScopeIds.every(x => typeof x === 'string') ) {
+        return false
+    }
+
+    if ( !Array.isArray(what.allowedRedirectUris) || !what.allowedRedirectUris.every(x => typeof x === 'string') ) {
+        return false
+    }
+
+    return !(!Array.isArray(what.allowedFlows) || !what.allowedFlows.every(x => isOAuth2FlowType(x)))
+}
+
+export abstract class ClientRepository {
+    abstract find(id: string): Awaitable<Maybe<OAuth2Client>>
+}
+
+export interface OAuth2Scope {
+    id: string
+    name: string
+    description?: string
+}
+
+export function isOAuth2Scope(what: unknown): what is OAuth2Scope {
+    if ( typeof what !== 'object' || what === null ) {
+        return false
+    }
+
+    if ( !hasOwnProperty(what, 'id') || !hasOwnProperty(what, 'name') ) {
+        return false
+    }
+
+    if ( typeof what.id !== 'string' || typeof what.name !== 'string' ) {
+        return false
+    }
+
+    return !hasOwnProperty(what, 'description') || typeof what.description === 'string'
+}
+
+export abstract class ScopeRepository {
+    abstract find(id: string): Awaitable<Maybe<OAuth2Scope>>
+
+    abstract findByName(name: string): Awaitable<Maybe<OAuth2Scope>>
+}
+
+export abstract class OAuth2Token {
+    abstract id: string
+
+    /** When undefined, these are client credentials. */
+    abstract userId?: AuthenticatableIdentifier
+
+    abstract clientId: string
+
+    abstract issued: Date
+
+    abstract expires: Date
+
+    abstract scope?: string
+}
+
+export type OAuth2TokenString = TypeTag<'@extollo/lib.OAuth2TokenString'> & string
+
+export function oauth2TokenString(s: string): OAuth2TokenString {
+    return s as OAuth2TokenString
+}
+
+export function isOAuth2Token(what: unknown): what is OAuth2Token {
+    if ( typeof what !== 'object' || what === null ) {
+        return false
+    }
+
+    if (
+        !hasOwnProperty(what, 'id')
+        || !hasOwnProperty(what, 'clientId')
+        || !hasOwnProperty(what, 'issued')
+        || !hasOwnProperty(what, 'expires')
+    ) {
+        return false
+    }
+
+    if (
+        typeof what.id !== 'string'
+        || (hasOwnProperty(what, 'userId') && !(typeof what.userId === 'string' || typeof what.userId === 'number'))
+        || typeof what.clientId !== 'string'
+        || !(what.issued instanceof Date)
+        || !(what.expires instanceof Date)
+    ) {
+        return false
+    }
+
+    return !hasOwnProperty(what, 'scope') || typeof what.scope === 'string'
+}
+
+export abstract class TokenRepository {
+    abstract find(id: string): Awaitable<Maybe<OAuth2Token>>
+
+    abstract issue(user: Authenticatable|undefined, client: OAuth2Client, scope?: string): Awaitable<OAuth2Token>
+
+    abstract decode(token: OAuth2TokenString): Awaitable<Maybe<OAuth2Token>>
+
+    abstract encode(token: OAuth2Token): Awaitable<OAuth2TokenString>
+}
+
+export interface OAuth2RedemptionCode {
+    clientId: string
+    userId: AuthenticatableIdentifier
+    code: string
+    scope?: string
+}
+
+export function isOAuth2RedemptionCode(what: unknown): what is OAuth2RedemptionCode {
+    if ( typeof what !== 'object' || what === null ) {
+        return false
+    }
+
+    if (
+        !hasOwnProperty(what, 'clientId')
+        || !hasOwnProperty(what, 'userId')
+        || !hasOwnProperty(what, 'code')
+    ) {
+        return false
+    }
+
+    if (
+        typeof what.clientId !== 'string'
+        || !(typeof what.userId === 'number' || typeof what.userId === 'string')
+        || typeof what.code !== 'string'
+    ) {
+        return false
+    }
+
+    return !hasOwnProperty(what, 'scope') || typeof what.scope === 'string'
+}
+
+export abstract class RedemptionCodeRepository {
+    abstract find(code: string): Awaitable<Maybe<OAuth2RedemptionCode>>
+
+    abstract issue(user: Authenticatable, client: OAuth2Client, scope?: string): Awaitable<OAuth2RedemptionCode>
+}

src/auth/types.ts

@@ -8,11 +8,17 @@ export type AuthenticatableIdentifier = string | number
  */
 export abstract class Authenticatable implements Rehydratable {
 
-    /** Get the unique identifier of the user. */
+    /** Get the globally-unique identifier of the user. */
+    abstract getUniqueIdentifier(): AuthenticatableIdentifier
+
+    /** Get the repository-unique identifier of the user. */
     abstract getIdentifier(): AuthenticatableIdentifier
 
     /** Get the human-readable identifier of the user. */
-    abstract getDisplayIdentifier(): string
+    abstract getDisplay(): string
+
+    /** Attempt to validate a credential of the user. */
+    abstract validateCredential(credential: string): Awaitable<boolean>
 
     abstract dehydrate(): Promise<JSONState>
 
@@ -23,14 +29,15 @@ export abstract class Authenticatable implements Rehydratable {
  * Base class for a repository that stores and recalls users.
  */
 export abstract class AuthenticatableRepository {
-
     /** Look up the user by their unique identifier. */
     abstract getByIdentifier(id: AuthenticatableIdentifier): Awaitable<Maybe<Authenticatable>>
 
-    /**
+    /** Returns true if this repository supports registering users. */
-     * Attempt to look up and verify a user by their credentials.
+    abstract supportsRegistration(): boolean
-     * Returns the user if the credentials are valid.
+
-     * @param credentials
+    /** Create a user in this repository from an external Authenticatable instance. */
-     */
+    abstract createFromExternal(user: Authenticatable): Awaitable<Authenticatable>
-    abstract getByCredentials(credentials: Record<string, string>): Awaitable<Maybe<Authenticatable>>
+
+    /** Create a user in this repository from basic credentials. */
+    abstract createFromCredentials(username: string, password: string): Awaitable<Authenticatable>
 }

src/auth/webSocketAuthCheck.ts

@@ -0,0 +1,36 @@
+import {Container} from '../di'
+import {RequestLocalStorage} from '../http/RequestLocalStorage'
+import {Session} from '../http/session/Session'
+import {Logging} from '../service/Logging'
+import {SecurityContext} from './context/SecurityContext'
+import {Bus} from '../support/bus'
+import {AuthCheckFailed} from './event/AuthCheckFailed'
+
+/**
+ * Check if the security context for the current request's web socket is still valid.
+ * If not, raise an `AuthCheckFailed` event. This is meant to be used as a subscriber
+ * to `WebSocketHealthCheckEvent` on the request.
+ *
+ * @see AuthCheckFailed
+ */
+export async function webSocketAuthCheck(): Promise<void> {
+    const request = Container.getContainer()
+        .make<RequestLocalStorage>(RequestLocalStorage)
+        .get()
+
+    const logging = request.make<Logging>(Logging)
+
+    try {
+        // Try to re-load the session in case we're using the SessionSecurityContext
+        await request.make<Session>(Session).load()
+    } catch (e: unknown) {
+        logging.error(e)
+    }
+
+    const security = request.make<SecurityContext>(SecurityContext)
+    await security.resume()
+
+    if ( !security.hasUser() ) {
+        await request.make<Bus>(Bus).push(new AuthCheckFailed())
+    }
+}

src/cli/Directive.ts

@@ -169,8 +169,12 @@ export abstract class Directive extends AppClass {
                 const optionValues = this.parseOptions(options, argv)
                 this.setOptionValues(optionValues)
                 await this.handle(argv)
-            } catch (e) {
+            } catch (e: unknown) {
+                if ( e instanceof Error ) {
                     this.nativeOutput(e.message)
+                    this.error(e)
+                }
+
                 if ( e instanceof OptionValidationError ) {
                     // expecting, value, requirements
                     if ( e.context.expecting ) {
@@ -187,6 +191,7 @@ export abstract class Directive extends AppClass {
                         this.nativeOutput(`  - ${e.context.value}`)
                     }
                 }
+
                 this.nativeOutput('\nUse --help for more info.')
             }
         }
@@ -463,4 +468,22 @@ export abstract class Directive extends AppClass {
     protected nativeOutput(...outputs: any[]): void {
         console.log(...outputs)  // eslint-disable-line no-console
     }
+
+    /**
+     * Get a promise that resolves after SIGINT is received, executing a
+     * callback beforehand.
+     * @param callback
+     * @protected
+     */
+    protected async untilInterrupt(callback?: () => unknown): Promise<void> {
+        return new Promise<void>(res => {
+            process.on('SIGINT', async () => {
+                if ( callback ) {
+                    await callback()
+                }
+
+                res()
+            })
+        })
+    }
 }

src/cli/decorators.ts

@@ -0,0 +1,23 @@
+import {ContainerBlueprint, Instantiable, isInstantiableOf} from '../di'
+import {CommandLine} from './service'
+import {Directive} from './Directive'
+import {logIfDebugging} from '../util'
+
+/**
+ * Register a class as a command-line Directive.
+ * The class must extend Directive.
+ * @constructor
+ */
+export const CLIDirective = (): ClassDecorator => {
+    return (target) => {
+        if ( isInstantiableOf(target, Directive) ) {
+            logIfDebugging('extollo.cli.decorators', 'Registering CLIDirective blueprint:', target)
+            ContainerBlueprint.getContainerBlueprint()
+                .onResolve<CommandLine>(CommandLine, (cli: CommandLine) => {
+                    cli.registerDirective(target as Instantiable<Directive>)
+                })
+        } else {
+            logIfDebugging('extollo.cli.decorators', 'Skipping CLIDirective blueprint:', target)
+        }
+    }
+}

src/cli/directive/RouteDirective.ts

@@ -2,7 +2,7 @@ import {Directive, OptionDefinition} from '../Directive'
 import {Inject, Injectable} from '../../di'
 import {Routing} from '../../service/Routing'
 import Table = require('cli-table')
-import {RouteHandler} from '../../http/routing/Route'
+import {HTTPMethod} from '../../http/lifecycle/Request'
 
 @Injectable()
 export class RouteDirective extends Directive {
@@ -33,39 +33,40 @@ export class RouteDirective extends Directive {
             .toLowerCase()
             .trim()
 
-        this.routing.getCompiled()
+        const matched = this.routing.getCompiled()
-            .filter(match => match.getRoute().trim() === route && (!method || match.getMethod() === method))
+            .filter(match => {
-            .tap(matches => {
+                if ( !method ) {
-                if ( !matches.length ) {
+                    return match.getRoute().trim() === route
-                    this.error('No matching routes found. (Use `./ex routes` to list)')
-                    process.exitCode = 1
                 }
+
+                return (
+                    (match.getRoute().trim() === route && match.getMethods().includes(method as HTTPMethod))
+                    || match.match(method as HTTPMethod, route)
+                )
             })
-            .each(match => {
+            .some(match => {
-                const pre = match.getMiddlewares()
+                const displays = match.getDisplays()
-                    .where('stage', '=', 'pre')
+                    .map<[string, string]>(ware => [ware.stage, ware.display])
-                    .map<[string, string]>(ware => [ware.stage, this.handlerToString(ware.handler)])
 
-                const post = match.getMiddlewares()
+                if ( displays.isEmpty() ) {
-                    .where('stage', '=', 'post')
+                    return
-                    .map<[string, string]>(ware => [ware.stage, this.handlerToString(ware.handler)])
+                }
 
-                const maxLen = match.getMiddlewares().max(ware => this.handlerToString(ware.handler).length)
+                const maxLen = displays.max(x => x[1].length)
 
                 const table = new Table({
                     head: ['Stage', 'Handler'],
-                    colWidths: [10, Math.max(maxLen, match.getDisplayableHandler().length) + 2],
+                    colWidths: [10, maxLen + 2],
                 })
 
-                table.push(...pre.toArray())
+                displays.each(x => table.push(x))
-                table.push(['handler', match.getDisplayableHandler()])
-                table.push(...post.toArray())
 
                 this.info(`\nRoute: ${match}\n\n${table}`)
+                return true
             })
-    }
 
-    protected handlerToString(handler: RouteHandler): string {
+        if ( !matched ) {
-        return typeof handler === 'string' ? handler : '(anonymous function)'
+            this.error('No matching routes found.')
+        }
     }
 }

src/cli/directive/RoutesDirective.ts

@@ -17,13 +17,21 @@ export class RoutesDirective extends Directive {
     }
 
     async handle(): Promise<void> {
-        const maxRouteLength = this.routing.getCompiled().max(route => String(route).length)
+        const compiled = this.routing.getCompiled()
-        const maxHandlerLength = this.routing.getCompiled().max(route => route.getDisplayableHandler().length)
+
-        const rows = this.routing.getCompiled().map<[string, string]>(route => [String(route), route.getDisplayableHandler()])
+        const maxRouteLength = compiled.strings().max('length')
+        const maxHandlerLength = compiled.mapCall('getHandlerDisplay')
+            .whereDefined()
+            .max('length')
+        const maxNameLength = compiled.mapCall('getAlias')
+            .whereDefined()
+            .max('length')
+
+        const rows = compiled.map(route => [String(route), route.getHandlerDisplay(), route.getAlias() || ''])
 
         const table = new Table({
-            head: ['Route', 'Handler'],
+            head: ['Route', 'Handler', 'Name'],
-            colWidths: [maxRouteLength + 2, maxHandlerLength + 2],
+            colWidths: [maxRouteLength + 2, maxHandlerLength + 2, maxNameLength + 2],
         })
 
         table.push(...rows.toArray())

src/cli/directive/ShellDirective.ts

@@ -1,15 +1,25 @@
-import {Directive} from '../Directive'
+import {Directive, OptionDefinition} from '../Directive'
 import * as colors from 'colors/safe'
 import * as repl from 'repl'
-import {DependencyKey} from '../../di'
+// import * as tsNode from 'ts-node'
+import {globalRegistry} from '../../util'
 
 /**
  * Launch an interactive REPL shell from within the application.
  * This is very useful for debugging and testing things during development.
+ *
+ * By default, the shell launches a TypeScript interpreter, but you can use
+ * the `--js` flag to get a JavaScript interpreter.
+ *
+ * @example
+ * ```sh
+ * pnpm cli -- shell
+ * pnpm cli -- shell --js
+ * ```
  */
 export class ShellDirective extends Directive {
     protected options: any = {
-        welcome: `powered by Extollo, © ${(new Date()).getFullYear()} Garrett Mills\nAccess your application using the "app" global.`,
+        welcome: `powered by Extollo, © ${(new Date()).getFullYear()} Garrett Mills\nAccess your application using the "app" global and @extollo/lib using the "lib" global.`,
         prompt: `${colors.blue('(')}extollo${colors.blue(') ➤  ')}`,
     }
 
@@ -31,17 +41,57 @@ export class ShellDirective extends Directive {
         return ''
     }
 
+    getOptions(): OptionDefinition[] {
+        return [
+            '--js | launch in JavaScript mode instead of TypeScript',
+        ]
+    }
+
     async handle(): Promise<void> {
         const state: any = {
+            globalRegistry,
             app: this.app(),
             lib: await import('../../index'),
-            make: (target: DependencyKey, ...parameters: any[]) => this.make(target, ...parameters),
+            exports: {},
         }
 
         await new Promise<void>(res => {
+            // Currently, there's no way to programmatically access the async context
+            // of the REPL from this directive w/o requiring the user to perform manual
+            // actions. So, instead, override the context on the GlobalRegistry to make
+            // the current one the global default.
+            globalRegistry.forceContextOverride()
+
+            // Create the ts-node compiler service.
+            // const replService = tsNode.createRepl()
+            // const service = tsNode.create({...replService.evalAwarePartialHost})
+            // replService.setService(service)
+
+            // We global these values into the REPL's state directly (using the `state` object
+            // above), but since we're using a separate ts-node interpreter, we need to make it
+            // aware of the globals using declaration syntax.
+            // replService.evalCode(`
+            //     declare const lib: typeof import('@extollo/lib');
+            //     declare const app: typeof lib['Application'];
+            //     declare const globalRegistry: typeof lib['globalRegistry'];
+            // `)
+
+            // Print the welome message and start the interpreter
             this.nativeOutput(this.options.welcome)
-            this.repl = repl.start(this.options.prompt)
+            this.repl = repl.start({
+                // Causes the REPL to use the ts-node interpreter service:
+                // eval: !this.option('js', false) ? (...args) => replService.nodeEval(...args) : undefined,
+                prompt: this.options.prompt,
+                useGlobal: true,
+                useColors: true,
+                terminal: true,
+                preview: true,
+            })
+
+            // Add our globals into the REPL's context
             Object.assign(this.repl.context, state)
+
+            // Wait for the REPL to exit
             this.repl.on('exit', () => res())
         })
     }

src/cli/directive/queue/ListenDirective.ts

@@ -0,0 +1,64 @@
+import {Directive, OptionDefinition} from '../../Directive'
+import {Inject, Injectable} from '../../../di'
+import {Bus, PushedToQueue, Queue} from '../../../support/bus'
+import {Queueables} from '../../../service/Queueables'
+
+@Injectable()
+export class ListenDirective extends Directive {
+    @Inject()
+    protected readonly queue!: Queue
+
+    @Inject()
+    protected readonly queueables!: Queueables
+
+    @Inject()
+    protected readonly bus!: Bus
+
+    getDescription(): string {
+        return 'listen for jobs pushed to the queue and attempt to execute them'
+    }
+
+    getKeywords(): string | string[] {
+        return 'queue-listen'
+    }
+
+    getOptions(): OptionDefinition[] {
+        return []
+    }
+
+    async handle(): Promise<void> {
+        this.info('Subscribing to queue events...')
+        await this.bus.subscribe(PushedToQueue, async () => {
+            // A new job has been pushed to the queue, so try to pop it and execute it.
+            // We may get undefined if some other worker is running and picked up this job first.
+            await this.tryExecuteJob()
+        })
+
+        this.info('Setting periodic poll...')
+        const handle = setInterval(async () => {
+            await this.tryExecuteJob()
+        }, 5000)
+
+        this.info('Listening for jobs...')
+        await this.untilInterrupt()
+
+        this.info('Shutting down...')
+        clearInterval(handle)
+    }
+
+    protected async tryExecuteJob(): Promise<void> {
+        try {
+            const job = await this.queue.pop()
+            if ( !job ) {
+                return  // Some other worker already picked up this job
+            }
+
+            this.info(`Executing: ${job.constructor?.name || 'unknown job'}`)
+            await job.execute()
+            this.success('Execution finished.')
+        } catch (e: unknown) {
+            this.error('Failed to execute job.')
+            this.error(e)
+        }
+    }
+}

src/cli/directive/queue/WorkDirective.ts

@@ -0,0 +1,43 @@
+import {Directive, OptionDefinition} from '../../Directive'
+import {Inject, Injectable} from '../../../di'
+import {Queue} from '../../../support/bus'
+import {Queueables} from '../../../service/Queueables'
+
+@Injectable()
+export class WorkDirective extends Directive {
+    @Inject()
+    protected readonly queue!: Queue
+
+    @Inject()
+    protected readonly queueables!: Queueables
+
+    getDescription(): string {
+        return 'pop a single item from the queue and execute it'
+    }
+
+    getKeywords(): string | string[] {
+        return 'queue-work'
+    }
+
+    getOptions(): OptionDefinition[] {
+        return []
+    }
+
+    async handle(): Promise<void> {
+        try {
+            const queueable = await this.queue.pop()
+            if ( !queueable ) {
+                this.info('There are no items in the queue.')
+                return
+            }
+
+            this.info(`Fetched 1 item from the queue`)
+            await queueable.execute()
+            this.success('Executed 1 item from the queue')
+        } catch (e: unknown) {
+            this.error('Failed to execute queueable:')
+            this.error(e)
+            process.exitCode = 1
+        }
+    }
+}

src/cli/index.ts

@@ -11,3 +11,8 @@ export * from './directive/options/PositionalOption'
 export * from './directive/ShellDirective'
 export * from './directive/TemplateDirective'
 export * from './directive/UsageDirective'
+
+export * from './decorators'
+
+export * from './directive/queue/ListenDirective'
+export * from './directive/queue/WorkDirective'

src/cli/service/CommandLineApplication.ts

@@ -1,6 +1,6 @@
 import {Unit} from '../../lifecycle/Unit'
 import {Logging} from '../../service/Logging'
-import {Singleton, Inject} from '../../di/decorator/injection'
+import {Singleton, Inject} from '../../di'
 import {CommandLine} from './CommandLine'
 import {UsageDirective} from '../directive/UsageDirective'
 import {Directive} from '../Directive'
@@ -9,6 +9,8 @@ import {TemplateDirective} from '../directive/TemplateDirective'
 import {RunDirective} from '../directive/RunDirective'
 import {RoutesDirective} from '../directive/RoutesDirective'
 import {RouteDirective} from '../directive/RouteDirective'
+import {WorkDirective} from '../directive/queue/WorkDirective'
+import {ListenDirective} from '../directive/queue/ListenDirective'
 
 /**
  * Unit that takes the place of the final unit in the application that handles
@@ -46,6 +48,8 @@ export class CommandLineApplication extends Unit {
         this.cli.registerDirective(RunDirective)
         this.cli.registerDirective(RoutesDirective)
         this.cli.registerDirective(RouteDirective)
+        this.cli.registerDirective(WorkDirective)
+        this.cli.registerDirective(ListenDirective)
 
         const argv = process.argv.slice(2)
         const match = this.cli.getDirectives()

src/di/Container.ts

@@ -1,35 +1,124 @@
-import {DependencyKey, InstanceRef, Instantiable, isInstantiable, StaticClass} from './types'
+import {
+    DependencyKey,
+    InstanceRef,
+    Instantiable,
+    isInstantiable,
+    StaticClass,
+    StaticInstantiable,
+    TypedDependencyKey,
+} from './types'
 import {AbstractFactory} from './factory/AbstractFactory'
-import {collect, Collection, globalRegistry, logIfDebugging} from '../util'
+import {
+    Awaitable,
+    collect,
+    Collection,
+    globalRegistry,
+    hasOwnProperty,
+    logIfDebugging, Unsubscribe,
+} from '../util'
+import {ErrorWithContext, withErrorContext} from '../util/error/ErrorWithContext'
 import {Factory} from './factory/Factory'
 import {DuplicateFactoryKeyError} from './error/DuplicateFactoryKeyError'
 import {ClosureFactory} from './factory/ClosureFactory'
 import NamedFactory from './factory/NamedFactory'
 import SingletonFactory from './factory/SingletonFactory'
 import {InvalidDependencyKeyError} from './error/InvalidDependencyKeyError'
-import {ContainerBlueprint} from './ContainerBlueprint'
+import {ContainerBlueprint, ContainerResolutionCallback} from './ContainerBlueprint'
 
 export type MaybeFactory<T> = AbstractFactory<T> | undefined
 export type MaybeDependency = any | undefined
 export type ResolvedDependency = { paramIndex: number, key: DependencyKey, resolved: any }
 
+/**
+ * Singletons that implement this interface receive callbacks for
+ * structural container events.
+ */
+export interface AwareOfContainerLifecycle {
+    awareOfContainerLifecycle: true
+
+    /** Called when this key is realized by its parent container. */
+    onContainerRealize?(): Awaitable<unknown>
+
+    /** Called before the parent container of this instance is destroyed. */
+    onContainerDestroy?(): Awaitable<unknown>
+
+    /** Called before an instance of a key is released from the container. */
+    onContainerRelease?(): Awaitable<unknown>
+}
+
+export function isAwareOfContainerLifecycle(what: unknown): what is AwareOfContainerLifecycle {
+    return Boolean(
+        (typeof what === 'object' || typeof what === 'function')
+        && what !== null
+        && hasOwnProperty(what, 'awareOfContainerLifecycle')
+        && what.awareOfContainerLifecycle,
+    )
+}
+
 /**
  * A container of resolve-able dependencies that are created via inversion-of-control.
  */
 export class Container {
+    /**
+     * Set to true when we're realizing a container.
+     * Used to prevent infinite recursion when `getContainer()` is accidentally called
+     * from somewhere within the `realizeContainer()` call.
+     */
+    protected static realizingContainer = false
+
+    /**
+     * List of dependency keys currently being `make`'d as a reverse stack.
+     * This is used to detect dependency cycles.
+     * @protected
+     */
+    protected static makeStack?: Collection<DependencyKey>
+
+    /**
+     * The 100 most recent dependency keys that were `make`'d. Used to help with
+     * debugging cyclic dependency errors.
+     * @protected
+     */
+    protected static makeHistory?: Collection<DependencyKey>
+
+    /**
+     * Given a Container instance, apply the ContainerBlueprint to it.
+     * @param container
+     */
+    public static realizeContainer<T extends Container>(container: T): T {
+        ContainerBlueprint.getContainerBlueprint()
+            .resolve()
+            .map(factory => container.registerFactory(factory))
+
+        ContainerBlueprint.getContainerBlueprint()
+            .resolveConstructable()
+            .map((factory: StaticClass<AbstractFactory<any>, any>) => container.registerFactory(container.make(factory)))
+
+        ContainerBlueprint.getContainerBlueprint()
+            .resolveResolutionCallbacks()
+            .map((listener: {key: TypedDependencyKey<any>, callback: ContainerResolutionCallback<any>}) => {
+                container.onResolve(listener.key)
+                    .then(value => listener.callback(value))
+            })
+
+        container.subscribeToBlueprintChanges(ContainerBlueprint.getContainerBlueprint())
+
+        return container
+    }
+
     /**
      * Get the global instance of this container.
      */
     public static getContainer(): Container {
         const existing = <Container | undefined> globalRegistry.getGlobal('extollo/injector')
         if ( !existing ) {
-            const container = new Container()
+            if ( this.realizingContainer ) {
-
+                throw new ErrorWithContext('Attempted getContainer call during container realization.')
-            ContainerBlueprint.getContainerBlueprint()
+            }
-                .resolve()
-                .map(factory => container.registerFactory(factory))
 
+            this.realizingContainer = true
+            const container = Container.realizeContainer(new Container())
             globalRegistry.setGlobal('extollo/injector', container)
+            this.realizingContainer = false
             return container
         }
 
@@ -48,11 +137,51 @@ export class Container {
      */
     protected instances: Collection<InstanceRef> = new Collection<InstanceRef>()
 
+    /**
+     * Collection of static-class overrides registered with this container.
+     * @protected
+     */
+    protected staticOverrides: Collection<{ base: StaticInstantiable<any>, override: StaticInstantiable<any> }> = new Collection<{base: StaticInstantiable<any>; override: StaticInstantiable<any>}>()
+
+    /**
+     * Collection of callbacks waiting for a dependency key to be resolved.
+     * @protected
+     */
+    protected waitingResolveCallbacks: Collection<{ key: DependencyKey, callback: (t: unknown) => unknown }> = new Collection<{key: DependencyKey; callback:(t: unknown) => unknown}>()
+
+    /**
+     * Collection of created objects that should have lifecycle events called on them, if they still exist.
+     * @protected
+     */
+    protected waitingLifecycleCallbacks: Collection<WeakRef<AwareOfContainerLifecycle>> = new Collection()
+
+    /**
+     * Collection of subscriptions to ContainerBlueprint events.
+     * We keep this around so we can remove the subscriptions when the container is destroyed.
+     * @protected
+     */
+    protected blueprintSubscribers: Collection<Unsubscribe> = new Collection()
+
     constructor() {
         this.registerSingletonInstance<Container>(Container, this)
         this.registerSingleton('injector', this)
     }
 
+    /** Make the container listen to changes in the given blueprint. */
+    private subscribeToBlueprintChanges(blueprint: ContainerBlueprint): void {
+        this.blueprintSubscribers.push(
+            blueprint.resolve$(factory => this.registerFactory(factory())),
+        )
+
+        this.blueprintSubscribers.push(
+            blueprint.resolveConstructable$(factoryClass => this.registerFactory(this.make(factoryClass))),
+        )
+
+        this.blueprintSubscribers.push(
+            blueprint.resolveResolutionCallbacks$(listener => this.onResolve(listener.key).then(value => listener.callback(value))),
+        )
+    }
+
     /**
      * Purge all factories and instances of the given key from this container.
      * @param key
@@ -68,7 +197,14 @@ export class Container {
      * @param key
      */
     release(key: DependencyKey): this {
-        this.instances = this.instances.filter(x => x.key !== key)
+        this.instances = this.instances.filter(x => {
+            if ( x.key === key && isAwareOfContainerLifecycle(x.value) ) {
+                x.value.onContainerRelease?.()
+            }
+
+            return x.key !== key
+        })
+
         return this
     }
 
@@ -86,6 +222,52 @@ export class Container {
         return this
     }
 
+    /**
+     * Register a static class as an override of some base class.
+     * @param base
+     * @param override
+     */
+    registerStaticOverride<T>(base: StaticInstantiable<T>, override: StaticInstantiable<T>): this {
+        if ( this.hasStaticOverride(base) ) {
+            throw new DuplicateFactoryKeyError(base)
+        }
+
+        this.staticOverrides.push({
+            base,
+            override,
+        })
+
+        return this
+    }
+
+    /** Returns true if a static override exists for the given base class. */
+    hasStaticOverride<T>(base: StaticInstantiable<T>): boolean {
+        return this.staticOverrides.where('base', '=', base).isNotEmpty()
+    }
+
+    /**
+     * Get the static class overriding the base class.
+     * @param base
+     */
+    getStaticOverride<T>(base: StaticInstantiable<T>): StaticInstantiable<T> {
+        const override = this.staticOverrides.firstWhere('base', '=', base)
+        if ( override ) {
+            return override.override
+        }
+
+        return base
+    }
+
+    /**
+     * Get the registered instance of the static override of a given class.
+     * @param base
+     * @param parameters
+     */
+    makeByStaticOverride<T>(base: StaticInstantiable<T>, ...parameters: any[]): T {
+        const key = this.getStaticOverride(base)
+        return this.make(key, ...parameters)
+    }
+
     /**
      * Register the given function as a factory within the container.
      * @param {string} name - unique name to identify the factory in the container
@@ -172,6 +354,26 @@ export class Container {
         return this.instances.where('key', '=', key).isNotEmpty()
     }
 
+    /**
+     * Get a Promise that resolves the first time the given dependency key is resolved
+     * by the application. If it has already been resolved, the Promise will resolve immediately.
+     * @param key
+     */
+    onResolve<T>(key: TypedDependencyKey<T>): Promise<T> {
+        if ( this.hasInstance(key) ) {
+            return new Promise<T>(res => res(this.make<T>(key)))
+        }
+
+        // Otherwise, we haven't instantiated an instance with this key yet,
+        // so put it onto the waitlist.
+        return new Promise<T>(res => {
+            this.waitingResolveCallbacks.push({
+                key,
+                callback: (res as (t: unknown) => unknown),
+            })
+        })
+    }
+
     /**
      * Returns true if the container has a factory for the given key.
      * @param {DependencyKey} key
@@ -200,13 +402,13 @@ export class Container {
         if ( factory ) {
             return factory
         } else {
-            logIfDebugging('extollo.di.injector', 'unable to resolve factory', factory, this.factories)
+            logIfDebugging('extollo.di.injector', 'unable to resolve factory', key, factory, this.factories)
         }
     }
 
     /**
      * Resolve the dependency key. If a singleton value for that key already exists in this container,
-     * return that value. Otherwise, use the factory an given parameters to produce and return the value.
+     * return that value. Otherwise, use the factory and given parameters to produce and return the value.
      * @param {DependencyKey} key
      * @param {...any} parameters
      */
@@ -234,6 +436,19 @@ export class Container {
             value: newInstance,
         })
 
+        if ( isAwareOfContainerLifecycle(newInstance) ) {
+            newInstance.onContainerRealize?.()
+        }
+
+        this.waitingResolveCallbacks = this.waitingResolveCallbacks.filter(waiter => {
+            if ( waiter.key === key ) {
+                waiter.callback(newInstance)
+                return false
+            }
+
+            return true
+        })
+
         return newInstance
     }
 
@@ -244,14 +459,21 @@ export class Container {
      * @param {array} parameters
      */
     protected produceFactory<T>(factory: AbstractFactory<T>, parameters: any[]): T {
+        logIfDebugging('extollo.di.injector', 'Make stack', Container.makeStack)
+
         // Create the dependencies for the factory
         const keys = factory.getDependencyKeys().filter(req => this.hasKey(req.key))
         const dependencies = keys.map<ResolvedDependency>(req => {
+            return withErrorContext(() => {
                 return {
                     paramIndex: req.paramIndex,
                     key: req.key,
                     resolved: this.resolveAndCreate(req.key),
                 }
+            }, {
+                producingToken: factory.getTokenName(),
+                constructorDependency: req,
+            })
         }).sortBy('paramIndex')
 
         // Build the arguments for the factory, using dependencies in the
@@ -271,12 +493,23 @@ export class Container {
         // Produce a new instance
         const inst = factory.produce(constructorArguments, params.reverse().all())
 
+        logIfDebugging('extollo.di.injector', 'Resolving dependencies for factory', factory)
         factory.getInjectedProperties().each(dependency => {
+            logIfDebugging('extollo.di.injector', 'Resolving injected dependency:', dependency)
             if ( dependency.key && inst ) {
+                withErrorContext(() => {
                     (inst as any)[dependency.property] = this.resolveAndCreate(dependency.key)
+                }, {
+                    producingToken: factory.getTokenName(),
+                    propertyDependency: dependency,
+                })
             }
         })
 
+        if ( isAwareOfContainerLifecycle(inst) ) {
+            this.waitingLifecycleCallbacks.push(new WeakRef<AwareOfContainerLifecycle>(inst))
+        }
+
         return inst
     }
 
@@ -290,13 +523,109 @@ export class Container {
      * @param {...any} parameters
      */
     make<T>(target: DependencyKey, ...parameters: any[]): T {
+        if ( !Container.makeStack ) {
+            Container.makeStack = new Collection()
+        }
+
+        if ( !Container.makeHistory ) {
+            Container.makeHistory = new Collection()
+        }
+
+        Container.makeStack.push(target)
+
+        if ( Container.makeHistory.length > 100 ) {
+            Container.makeHistory = Container.makeHistory.slice(1, 100)
+        }
+        Container.makeHistory.push(target)
+
+        this.checkForMakeCycles()
+
+        try {
+            const result = withErrorContext(() => {
                 if (this.hasKey(target)) {
-            return this.resolveAndCreate(target, ...parameters)
+                    const realized = this.resolveAndCreate(target, ...parameters)
+                    Container.makeStack?.pop()
+                    return realized
                 } else if (typeof target !== 'string' && isInstantiable(target)) {
-            return this.produceFactory(new Factory(target), parameters)
+                    const realized = this.produceFactory(new Factory(target), parameters)
-        } else {
+                    Container.makeStack?.pop()
+                    return realized
+                }
+            }, {
+                makeStack: Container.makeStack.map(x => typeof x === 'string' ? x : (x?.name || 'unknown')).toArray(),
+            })
+
+            if ( result ) {
+                return result
+            }
+        } catch (e: unknown) {
+            Container.makeStack.pop()
+            throw e
+        }
+
+        Container.makeStack.pop()
         throw new TypeError(`Invalid or unknown make target: ${target}`)
     }
+
+    /**
+     * Check the `makeStack` for duplicates and throw an error if a dependency cycle is
+     * detected. This is used to prevent infinite mutual recursion when cyclic dependencies
+     * occur.
+     * @protected
+     */
+    protected checkForMakeCycles(): void {
+        if ( !Container.makeStack ) {
+            Container.makeStack = new Collection()
+        }
+
+        if ( !Container.makeHistory ) {
+            Container.makeHistory = new Collection()
+        }
+
+        if ( Container.makeStack.unique().length !== Container.makeStack.length ) {
+            const displayKey = (key: DependencyKey) => {
+                if ( typeof key === 'string' ) {
+                    return 'key: `' + key + '`'
+                } else {
+                    return `key: ${key.name}`
+                }
+            }
+
+            const makeStack = Container.makeStack
+                .reverse()
+                .map(displayKey)
+
+            const makeHistory = Container.makeHistory
+                .reverse()
+                .map(displayKey)
+
+            console.error('Make Stack:')  // eslint-disable-line no-console
+            console.error(makeStack.join('\n'))  // eslint-disable-line no-console
+            console.error('Make History:')  // eslint-disable-line no-console
+            console.error(makeHistory.join('\n'))  // eslint-disable-line no-console
+            throw new ErrorWithContext('Cyclic dependency chain detected', {
+                makeStack,
+                makeHistory,
+            })
+        }
+    }
+
+    /**
+     * Create a new instance of the dependency key using this container, ignoring any pre-existing instances
+     * in this container.
+     * @param key
+     * @param parameters
+     */
+    makeNew<T>(key: TypedDependencyKey<T>, ...parameters: any[]): T {
+        if ( isInstantiable(key) ) {
+            const result = this.produceFactory(new Factory(key), parameters)
+            if ( isAwareOfContainerLifecycle(result) ) {
+                result.onContainerRealize?.()
+            }
+            return result
+        }
+
+        throw new TypeError(`Invalid or unknown make target: ${key}`)
     }
 
     /**
@@ -313,6 +642,23 @@ export class Container {
         return factory.getDependencyKeys().pluck('key')
     }
 
+    /**
+     * Perform any cleanup necessary to destroy this container instance.
+     */
+    destroy(): void {
+        this.blueprintSubscribers.mapCall('unsubscribe')
+
+        this.waitingLifecycleCallbacks
+            .mapCall('deref')
+            .whereDefined()
+            .each(inst => {
+                if ( isAwareOfContainerLifecycle(inst) ) {
+                    inst.onContainerRelease?.()
+                    inst.onContainerDestroy?.()
+                }
+            })
+    }
+
     /**
      * Given a different container, copy the factories and instances from this container over to it.
      * @param container

src/di/ContainerBlueprint.ts

@@ -1,8 +1,21 @@
-import {Instantiable} from './types'
+import {DependencyKey, Instantiable, StaticClass, TypedDependencyKey} from './types'
 import NamedFactory from './factory/NamedFactory'
 import {AbstractFactory} from './factory/AbstractFactory'
 import {Factory} from './factory/Factory'
+import {ClosureFactory} from './factory/ClosureFactory'
+import {Collection, collect} from '../util/collection/Collection'
+import {Subscription, Unsubscribe} from '../util/support/BehaviorSubject'
 
+/** Simple type alias for a callback to a container's onResolve method. */
+export type ContainerResolutionCallback<T> = (() => unknown) | ((t: T) => unknown)
+
+/**
+ * Blueprint for newly-created containers.
+ *
+ * This is used to allow global helpers like `@Singleton()`
+ * or `@CLIDirective()` while still supporting multiple
+ * global Container instances at once.
+ */
 export class ContainerBlueprint {
     private static instance?: ContainerBlueprint
 
@@ -14,7 +27,20 @@ export class ContainerBlueprint {
         return this.instance
     }
 
-    protected factories: (() => AbstractFactory<any>)[] = []
+    protected factories: Collection<(() => AbstractFactory<any>)> = collect()
+
+    protected constructableFactories: Collection<StaticClass<AbstractFactory<any>, any>> = collect()
+
+    protected resolutionCallbacks: Collection<{key: TypedDependencyKey<any>, callback: ContainerResolutionCallback<any>}> = collect()
+
+    /**
+     * Register some factory class with the container. Should take no construction params.
+     * @param factory
+     */
+    registerFactory(factory: StaticClass<AbstractFactory<any>, any>): this {
+        this.constructableFactories.push(factory)
+        return this
+    }
 
     /**
      * Register a basic instantiable class as a standard Factory with this container,
@@ -36,7 +62,75 @@ export class ContainerBlueprint {
         return this
     }
 
+    /**
+     * Register a producer function as a ClosureFactory with this container.
+     * @param key
+     * @param producer
+     */
+    registerProducer(key: DependencyKey, producer: () => any): this {
+        this.factories.push(() => new ClosureFactory(key, producer))
+        return this
+    }
+
+    /**
+     * Get an array of factory instances in the blueprint.
+     */
     resolve(): AbstractFactory<any>[] {
-        return this.factories.map(x => x())
+        return this.factories.map(x => x()).all()
+    }
+
+    /**
+     * Subscribe to new factories being registered.
+     * Used by `Container` implementations to listen for factories being registered after the container is realized.
+     * @param sub
+     */
+    resolve$(sub: Subscription<() => AbstractFactory<any>>): Unsubscribe {
+        return this.factories.push$(sub)
+    }
+
+    /**
+     * Register an onResolve callback to be added to all newly-created containers.
+     * @param key
+     * @param callback
+     */
+    onResolve<T>(key: TypedDependencyKey<T>, callback: ContainerResolutionCallback<T>): this {
+        this.resolutionCallbacks.push({
+            key,
+            callback,
+        })
+        return this
+    }
+
+    /**
+     * Get an array of static Factory classes that need to be instantiated by
+     * the container itself.
+     */
+    resolveConstructable(): StaticClass<AbstractFactory<any>, any>[] {
+        return this.constructableFactories.all()
+    }
+
+    /**
+     * Subscribe to new constructable factories being registered.
+     * Used by `Container` implementations to listen for factories registered after the container is realized.
+     * @param sub
+     */
+    resolveConstructable$(sub: Subscription<StaticClass<AbstractFactory<any>, any>>): Unsubscribe {
+        return this.constructableFactories.push$(sub)
+    }
+
+    /**
+     * Get an array of DependencyKey-callback pairs to register with new containers.
+     */
+    resolveResolutionCallbacks(): ({key: TypedDependencyKey<any>, callback: ContainerResolutionCallback<any>})[] {
+        return this.resolutionCallbacks.all()
+    }
+
+    /**
+     * Subscribe to new resolution callbacks being registered.
+     * Used by `Container` implementations to listen for callbacks registered after the container is realized.
+     * @param sub
+     */
+    resolveResolutionCallbacks$(sub: Subscription<{key: TypedDependencyKey<any>, callback: ContainerResolutionCallback<any>}>): Unsubscribe {
+        return this.resolutionCallbacks.push$(sub)
     }
 }

src/di/InjectionAware.ts

@@ -0,0 +1,37 @@
+import {Container} from './Container'
+import {TypedDependencyKey} from './types'
+
+/**
+ * Base class for Injection-aware classes that automatically
+ * pass along their configured container to instances created
+ * via their `make` method.
+ */
+export class InjectionAware {
+    private ci: Container
+
+    constructor() {
+        this.ci = Container.getContainer()
+    }
+
+    /** Set the container for this instance. */
+    public setContainer(ci: Container): this {
+        this.ci = ci
+        return this
+    }
+
+    /** Get the container for this instance. */
+    public getContainer(): Container {
+        return this.ci
+    }
+
+    /** Instantiate a new injectable using the container. */
+    public make<T>(target: TypedDependencyKey<T>, ...parameters: any[]): T {
+        const inst = this.ci.make<T>(target, ...parameters)
+
+        if ( inst instanceof InjectionAware ) {
+            inst.setContainer(this.ci)
+        }
+
+        return inst
+    }
+}

src/di/constructable.ts

@@ -0,0 +1,11 @@
+import {Container} from './Container'
+import {TypedDependencyKey} from './types'
+import {Pipeline} from '../util'
+
+export type Constructable<T> = Pipeline<Container, T>
+
+export function constructable<T>(key: TypedDependencyKey<T>): Constructable<T> {
+    return new Pipeline<Container, T>(
+        container => container.make(key),
+    )
+}

src/di/decorator/getPropertyInjectionMetadata.ts

@@ -0,0 +1,9 @@
+import {Instantiable, PropertyDependency} from '../types'
+import {Collection, logIfDebugging} from '../../util'
+import {propertyInjectionMetadata} from './propertyInjectionMetadata'
+
+export function getPropertyInjectionMetadata(token: Instantiable<any>): Collection<PropertyDependency> {
+    const loadedMeta = ((token as any)[propertyInjectionMetadata] || new Collection()) as Collection<PropertyDependency>
+    logIfDebugging('extollo.di.injection', 'getPropertyInjectionMetadata() target:', token, 'loaded:', loadedMeta)
+    return loadedMeta
+}

src/di/decorator/injection.ts

@@ -1,16 +1,17 @@
 import 'reflect-metadata'
-import {collect, Collection} from '../../util'
+import {collect, Collection} from '../../util/collection/Collection'
+import {logIfDebugging} from '../../util/support/debug'
 import {
+    DEPENDENCY_KEYS_METADATA_KEY,
+    DEPENDENCY_KEYS_SERVICE_TYPE_KEY,
     DependencyKey,
     DependencyRequirement,
-    DEPENDENCY_KEYS_METADATA_KEY,
-    DEPENDENCY_KEYS_PROPERTY_METADATA_KEY,
-    isInstantiable,
     InjectionType,
-    DEPENDENCY_KEYS_SERVICE_TYPE_KEY,
+    isInstantiable,
     PropertyDependency,
 } from '../types'
 import {ContainerBlueprint} from '../ContainerBlueprint'
+import {propertyInjectionMetadata} from './propertyInjectionMetadata'
 
 /**
  * Get a collection of dependency requirements for the given target object.
@@ -66,19 +67,38 @@ export const Injectable = (): ClassDecorator => {
     }
 }
 
+
 /**
  * Mark the given class property to be injected by the container.
  * If a `key` is specified, that DependencyKey will be injected.
  * Otherwise, the DependencyKey is inferred from the type annotation.
  * @param key
+ * @param debug
  * @constructor
  */
-export const Inject = (key?: DependencyKey): PropertyDecorator => {
+export const Inject = (key?: DependencyKey, { debug = false } = {}): PropertyDecorator => {
     return (target, property) => {
-        let propertyMetadata = Reflect.getMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, target?.constructor || target) as Collection<PropertyDependency>
+        if ( !target?.constructor ) {
+            logIfDebugging('extollo.di.decoration', '[DEBUG] @Inject(): target has no constructor', target)
+            throw new Error('Unable to define property injection: target has no constructor. Enable `extollo.di.decoration` logging to debug')
+        }
+
+        const propertyTarget = target.constructor
+
+        // let propertyMetadata = Reflect.getMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, propertyTarget) as Collection<PropertyDependency>
+        // Okay, this is a little fucky. We can't use Reflect's metadata capabilities because we need to write the metadata to
+        // the constructor, not the `target`. Because Reflect is using the prototype to store data, defining a metadata key on the constructor
+        // will define it for its parent constructors as well.
+        // So, if you have class A, class B extends A, and class C extends A, the properties for B and C will be defined on A, causing
+        // BOTH B and C's properties to be injected on any class extending A.
+        // To get around this, we instead define a custom property on the constructor itself, then use hasOwnProperty to make sure we're not
+        // getting the one for the parent class via the prototype chain.
+        let propertyMetadata = Object.prototype.hasOwnProperty.call(propertyTarget, propertyInjectionMetadata) ?
+            (propertyTarget as any)[propertyInjectionMetadata] as Collection<PropertyDependency> : undefined
+
         if ( !propertyMetadata ) {
             propertyMetadata = new Collection<PropertyDependency>()
-            Reflect.defineMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, propertyMetadata, target?.constructor || target)
+            ;(propertyTarget as any)[propertyInjectionMetadata] = propertyMetadata
         }
 
         const type = Reflect.getMetadata('design:type', target, property)
@@ -91,12 +111,17 @@ export const Inject = (key?: DependencyKey): PropertyDecorator => {
             if ( existing ) {
                 existing.key = key
             } else {
-                propertyMetadata.push({ property,
+                propertyMetadata.push({
-                    key })
+                    property,
+                    key,
+                    debug,
+                })
             }
         }
 
-        Reflect.defineMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, propertyMetadata, target?.constructor || target)
+        logIfDebugging('extollo.di.decoration', '[DEBUG] @Inject() - key:', key, 'property:', property, 'target:', target, 'target constructor:', target?.constructor, 'type:', type)
+
+        ;(propertyTarget as any)[propertyInjectionMetadata] = propertyMetadata
     }
 }
 
@@ -141,6 +166,7 @@ export const Singleton = (name?: string): ClassDecorator => {
                 ...(name ? { name } : {}),
             }
 
+            logIfDebugging('extollo.di.singleton', 'Registering singleton target:', target, 'injectionType:', injectionType)
             Reflect.defineMetadata(DEPENDENCY_KEYS_SERVICE_TYPE_KEY, injectionType, target)
             Injectable()(target)
 
@@ -152,3 +178,16 @@ export const Singleton = (name?: string): ClassDecorator => {
         }
     }
 }
+
+/**
+ * Register a factory class directly with any created containers.
+ * @constructor
+ */
+export const FactoryProducer = (): ClassDecorator => {
+    return (target) => {
+        logIfDebugging('extollo.di.injector', 'Registering factory producer for target:', target)
+        if ( isInstantiable(target) ) {
+            ContainerBlueprint.getContainerBlueprint().registerFactory(target)
+        }
+    }
+}

src/di/decorator/propertyInjectionMetadata.ts

@@ -0,0 +1,2 @@
+
+export const propertyInjectionMetadata = Symbol('@extollo/lib:propertyInjectionMetadata')

src/di/error/InvalidDependencyKeyError.ts

@@ -1,11 +1,12 @@
 import {DependencyKey} from '../types'
+import {ErrorWithContext} from '../../util/error/ErrorWithContext'
 
 /**
  * Error thrown when a dependency key that has not been registered is passed to a resolver.
  * @extends Error
  */
-export class InvalidDependencyKeyError extends Error {
+export class InvalidDependencyKeyError extends ErrorWithContext {
-    constructor(key: DependencyKey) {
+    constructor(key: DependencyKey, context: {[key: string]: any} = {}) {
-        super(`No such dependency is registered with this container: ${key}`)
+        super(`No such dependency is registered with this container: ${key}`, context)
     }
 }

src/di/factory/AbstractFactory.ts

@@ -1,5 +1,6 @@
-import {DependencyKey, DependencyRequirement, PropertyDependency} from '../types'
+import {DependencyKey, DependencyRequirement, Instantiable, PropertyDependency} from '../types'
-import { Collection } from '../../util'
+import {Collection, logIfDebugging} from '../../util'
+import {getPropertyInjectionMetadata} from '../decorator/getPropertyInjectionMetadata'
 
 /**
  * Abstract base class for dependency container factories.
@@ -41,4 +42,32 @@ export abstract class AbstractFactory<T> {
      * @return Collection<PropertyDependency>
      */
     abstract getInjectedProperties(): Collection<PropertyDependency>
+
+    /** Helper method that returns all `@Inject()`'ed properties for a token and its prototypical ancestors. */
+    protected getInjectedPropertiesForPrototypeChain(token: Instantiable<any>): Collection<PropertyDependency> {
+        const meta = new Collection<PropertyDependency>()
+
+        do {
+            const loadedMeta = getPropertyInjectionMetadata(token)
+            if ( loadedMeta ) {
+                meta.concat(loadedMeta)
+            }
+            token = Object.getPrototypeOf(token)
+            logIfDebugging('extollo.di.injection', 'next currentToken:', token)
+        } while (token !== Function.prototype && token !== Object.prototype)
+
+        return meta
+    }
+
+    /**
+     * Get a human-readable name of the token this factory produces.
+     * This is meant for debugging output only.
+     */
+    public getTokenName(): string {
+        if ( typeof this.token === 'string' ) {
+            return this.token
+        }
+
+        return this.token?.name ?? '(unknown token)'
+    }
 }

src/di/factory/ConfiguredSingletonFactory.ts

@@ -0,0 +1,84 @@
+import {AbstractFactory} from './AbstractFactory'
+import {Inject, Injectable} from '../decorator/injection'
+import {Logging} from '../../service/Logging'
+import {Config} from '../../service/Config'
+import {
+    DEPENDENCY_KEYS_METADATA_KEY,
+    DependencyRequirement,
+    Instantiable,
+    isInstantiable,
+    PropertyDependency,
+} from '../types'
+import {Collection, ErrorWithContext, Maybe} from '../../util'
+import 'reflect-metadata'
+
+@Injectable()
+export abstract class ConfiguredSingletonFactory<T> extends AbstractFactory<T> {
+    protected static loggedDefaultImplementationWarningOnce = false
+
+    @Inject()
+    protected readonly logging!: Logging
+
+    @Inject()
+    protected readonly config!: Config
+
+    constructor() {
+        super({})
+    }
+
+    protected abstract getConfigKey(): string
+
+    protected abstract getDefaultImplementation(): Instantiable<T>
+
+    protected abstract getAbstractImplementation(): any
+
+    protected getDefaultImplementationWarning(): Maybe<string> {
+        return undefined
+    }
+
+    produce(dependencies: any[], parameters: any[]): T {
+        return new (this.getImplementation())(...dependencies, ...parameters)
+    }
+
+    match(something: unknown): boolean {
+        return something === this.getAbstractImplementation()
+    }
+
+    getDependencyKeys(): Collection<DependencyRequirement> {
+        const meta = Reflect.getMetadata(DEPENDENCY_KEYS_METADATA_KEY, this.getImplementation())
+        if ( meta ) {
+            return meta
+        }
+
+        return new Collection<DependencyRequirement>()
+    }
+
+    getInjectedProperties(): Collection<PropertyDependency> {
+        return this.getInjectedPropertiesForPrototypeChain(this.getImplementation())
+    }
+
+    protected getImplementation(): Instantiable<T> {
+        const ctor = this.constructor as typeof ConfiguredSingletonFactory
+        const ImplementationClass = this.config.get(this.getConfigKey(), this.getDefaultImplementation())
+        if ( ImplementationClass === this.getDefaultImplementation() ) {
+            const warning = this.getDefaultImplementationWarning()
+            if ( warning && !ctor.loggedDefaultImplementationWarningOnce ) {
+                this.logging.warn(warning)
+                ctor.loggedDefaultImplementationWarningOnce = true
+            }
+        }
+
+        if (
+            !isInstantiable(ImplementationClass)
+            || !(ImplementationClass.prototype instanceof this.getAbstractImplementation())
+        ) {
+            throw new ErrorWithContext('Configured service clas does not properly extend from implementation base class.', {
+                configKey: this.getConfigKey(),
+                class: `${ImplementationClass}`,
+                mustExtendBase: `${this.getAbstractImplementation()}`,
+            })
+        }
+
+        return ImplementationClass as Instantiable<T>
+    }
+}

src/di/factory/Factory.ts

@@ -1,7 +1,6 @@
 import {AbstractFactory} from './AbstractFactory'
 import {
     DEPENDENCY_KEYS_METADATA_KEY,
-    DEPENDENCY_KEYS_PROPERTY_METADATA_KEY,
     DependencyRequirement,
     Instantiable,
     PropertyDependency,
@@ -53,17 +52,6 @@ export class Factory<T> extends AbstractFactory<T> {
     }
 
     getInjectedProperties(): Collection<PropertyDependency> {
-        const meta = new Collection<PropertyDependency>()
+        return this.getInjectedPropertiesForPrototypeChain(this.token)
-        let currentToken = this.token
-
-        do {
-            const loadedMeta = Reflect.getMetadata(DEPENDENCY_KEYS_PROPERTY_METADATA_KEY, currentToken)
-            if ( loadedMeta ) {
-                meta.concat(loadedMeta)
-            }
-            currentToken = Object.getPrototypeOf(currentToken)
-        } while (Object.getPrototypeOf(currentToken) !== Function.prototype && Object.getPrototypeOf(currentToken) !== Object.prototype)
-
-        return meta
     }
 }

src/di/index.ts

@@ -7,9 +7,13 @@ export * from './factory/Factory'
 export * from './factory/NamedFactory'
 export * from './factory/SingletonFactory'
 
+export * from './types'
 export * from './ContainerBlueprint'
+export * from './decorator/getPropertyInjectionMetadata'
+export * from './decorator/injection'
+
 export * from './Container'
 export * from './ScopedContainer'
-export * from './types'
 
-export * from './decorator/injection'
+export * from './InjectionAware'
+export * from './constructable'

src/di/types.ts

@@ -23,10 +23,25 @@ export function isInstantiable<T>(what: unknown): what is Instantiable<T> {
     )
 }
 
+/**
+ * Returns true if the given value is instantiable and, once instantiated,
+ * will create an instance of the given static class.
+ * @param what
+ * @param type
+ */
+export function isInstantiableOf<T>(what: unknown, type: StaticClass<T, any>): what is Instantiable<T> {
+    return isInstantiable(what) && what.prototype instanceof type
+}
+
 /**
  * Type that identifies a value as a static class, even if it is not instantiable.
  */
-export type StaticClass<T, T2> = Function & {prototype: T} & T2  // eslint-disable-line @typescript-eslint/ban-types
+export type StaticClass<T, T2, TCtorParams extends any[] = any[]> = Function & {prototype: T} & { new (...args: TCtorParams) : T } & T2  // eslint-disable-line @typescript-eslint/ban-types
+
+/**
+ * Type that identifies a value as a static class that instantiates to itself
+ */
+export type StaticInstantiable<T> = StaticClass<T, Instantiable<T>>
 
 /**
  * Returns true if the parameter is a static class.
@@ -41,6 +56,11 @@ export function isStaticClass<T, T2>(something: unknown): something is StaticCla
  */
 export type DependencyKey = Instantiable<any> | StaticClass<any, any> | string
 
+/**
+ * A DependencyKey, but typed
+ */
+export type TypedDependencyKey<T> = Instantiable<T> | StaticClass<T, any> | string
+
 /**
  * Interface used to store dependency requirements by their place in the injectable
  * target's parameters.
@@ -58,6 +78,7 @@ export interface DependencyRequirement {
 export interface PropertyDependency {
     key: DependencyKey,
     property: string | symbol,
+    debug?: boolean,
 }
 
 /**

src/event/Event.ts

@@ -1,11 +0,0 @@
-import {Dispatchable} from './types'
-import {JSONState} from '../util'
-
-/**
- * Abstract class representing an event that may be fired.
- */
-export abstract class Event implements Dispatchable {
-    abstract dehydrate(): Promise<JSONState>
-
-    abstract rehydrate(state: JSONState): void | Promise<void>
-}

src/event/EventBus.ts

@@ -1,53 +0,0 @@
-import {Singleton, StaticClass} from '../di'
-import {Bus, Dispatchable, EventSubscriber, EventSubscriberEntry, EventSubscription} from './types'
-import {Awaitable, Collection, uuid4} from '../util'
-
-/**
- * A non-queued bus implementation that executes subscribers immediately in the main thread.
- */
-@Singleton()
-export class EventBus implements Bus {
-    /**
-     * Collection of subscribers, by their events.
-     * @protected
-     */
-    protected subscribers: Collection<EventSubscriberEntry<any>> = new Collection<EventSubscriberEntry<any>>()
-
-    subscribe<T extends Dispatchable>(event: StaticClass<T, T>, subscriber: EventSubscriber<T>): Awaitable<EventSubscription> {
-        const entry: EventSubscriberEntry<T> = {
-            id: uuid4(),
-            event,
-            subscriber,
-        }
-
-        this.subscribers.push(entry)
-        return this.buildSubscription(entry.id)
-    }
-
-    unsubscribe<T extends Dispatchable>(subscriber: EventSubscriber<T>): Awaitable<void> {
-        this.subscribers = this.subscribers.where('subscriber', '!=', subscriber)
-    }
-
-    async dispatch(event: Dispatchable): Promise<void> {
-        const eventClass: StaticClass<typeof event, typeof event> = event.constructor as StaticClass<Dispatchable, Dispatchable>
-        await this.subscribers.where('event', '=', eventClass)
-            .promiseMap(entry => entry.subscriber(event))
-    }
-
-    /**
-     * Build an EventSubscription object for the subscriber of the given ID.
-     * @param id
-     * @protected
-     */
-    protected buildSubscription(id: string): EventSubscription {
-        let subscribed = true
-        return {
-            unsubscribe: (): Awaitable<void> => {
-                if ( subscribed ) {
-                    this.subscribers = this.subscribers.where('id', '!=', id)
-                    subscribed = false
-                }
-            },
-        }
-    }
-}

src/event/PropagatingEventBus.ts

@@ -1,28 +0,0 @@
-import {EventBus} from './EventBus'
-import {Collection} from '../util'
-import {Bus, Dispatchable} from './types'
-
-/**
- * A non-queued bus implementation that executes subscribers immediately in the main thread.
- * This bus also supports "propagating" events along to any other connected buses.
- * Such behavior is useful, e.g., if we want to have a semi-isolated request-
- * level bus whose events still reach the global EventBus instance.
- */
-export class PropagatingEventBus extends EventBus {
-    protected recipients: Collection<Bus> = new Collection<Bus>()
-
-    async dispatch(event: Dispatchable): Promise<void> {
-        await super.dispatch(event)
-        await this.recipients.promiseMap(bus => bus.dispatch(event))
-    }
-
-    /**
-     * Register the given bus to receive events fired on this bus.
-     * @param recipient
-     */
-    connect(recipient: Bus): void {
-        if ( !this.recipients.includes(recipient) ) {
-            this.recipients.push(recipient)
-        }
-    }
-}

src/event/types.ts

@@ -1,47 +0,0 @@
-import {Awaitable, Rehydratable} from '../util'
-import {StaticClass} from '../di'
-
-/**
- * A closure that should be executed with the given event is fired.
- */
-export type EventSubscriber<T extends Dispatchable> = (event: T) => Awaitable<void>
-
-/**
- * An object used to track event subscriptions internally.
- */
-export interface EventSubscriberEntry<T extends Dispatchable> {
-    /** Globally unique ID of this subscription. */
-    id: string
-
-    /** The event class subscribed to. */
-    event: StaticClass<T, T>
-
-    /** The closure to execute when the event is fired. */
-    subscriber: EventSubscriber<T>
-}
-
-/**
- * An object returned upon subscription, used to unsubscribe.
- */
-export interface EventSubscription {
-    /**
-     * Unsubscribe the associated listener from the event bus.
-     */
-    unsubscribe(): Awaitable<void>
-}
-
-/**
- * An instance of something that can be fired on an event bus.
- */
-export interface Dispatchable extends Rehydratable {
-    shouldQueue?: boolean
-}
-
-/**
- * An event-driven bus that manages subscribers and dispatched items.
- */
-export interface Bus {
-    subscribe<T extends Dispatchable>(eventClass: StaticClass<T, T>, subscriber: EventSubscriber<T>): Awaitable<EventSubscription>
-    unsubscribe<T extends Dispatchable>(subscriber: EventSubscriber<T>): Awaitable<void>
-    dispatch(event: Dispatchable): Awaitable<void>
-}

src/forms/FormRequest.ts

@@ -1,62 +0,0 @@
-import {Container, Injectable, InjectParam} from '../di'
-import {Request} from '../http/lifecycle/Request'
-import {Valid, ValidationRules} from './rules/types'
-import {Validator} from './Validator'
-import {AppClass} from '../lifecycle/AppClass'
-import {DataContainer} from '../http/lifecycle/Request'
-
-/**
- * Base class for defining reusable validators for request routes.
- * If instantiated with a container, it must be a request-level container,
- * but the type interface allows any data-container to be used when creating
- * manually.
- *
- * You should mark implementations of this class as singleton to avoid
- * re-validating the input data every time it is accessed.
- *
- * @example
- * ```ts
- * // Instantiate with the request:
- * const data = <MyFormRequest> request.make(MyFormRequest)
- *
- * // Instantiate with some container:
- * const data = new MyFormRequest(someDataContainer)
- * ```
- */
-@Injectable()
-export abstract class FormRequest<T> extends AppClass {
-    /** The cached validation result. */
-    protected cachedResult?: Valid<T>
-
-    constructor(
-        @InjectParam(Request)
-        protected readonly data: DataContainer,
-    ) {
-        super()
-    }
-
-    protected container(): Container {
-        return (this.data as unknown) as Container
-    }
-
-    /**
-     * The validation rules that should be applied to the request to guarantee
-     * that it contains the given data type.
-     * @protected
-     */
-    protected abstract getRules(): ValidationRules | Promise<ValidationRules>
-
-    /**
-     * Validate and get the request input. Throws a validation error on fail.
-     * Internally, caches the result after the first validation. So, singleton
-     * validators will avoid re-processing their rules every time.
-     */
-    public async get(): Promise<Valid<T>> {
-        if ( !this.cachedResult ) {
-            const validator = <Validator<T>> this.make(Validator, await this.getRules())
-            this.cachedResult = await validator.validate(this.data.input())
-        }
-
-        return this.cachedResult
-    }
-}

src/forms/Validator.ts

@@ -1,109 +0,0 @@
-import {Valid, ValidationResult, ValidationRules, ValidatorFunction, ValidatorFunctionParams} from './rules/types'
-import {Messages, ErrorWithContext, dataWalkUnsafe, dataSetUnsafe} from '../util'
-
-/**
- * An error thrown thrown when an object fails its validation.
- */
-export class ValidationError<T> extends ErrorWithContext {
-    constructor(
-        /** The original input data. */
-        public readonly data: unknown,
-
-        /** The validator instance used. */
-        public readonly validator: Validator<T>,
-
-        /** Validation error messages, by field. */
-        public readonly errors: Messages,
-    ) {
-        super('One or more fields were invalid.', { data,
-            messages: errors.all() })
-    }
-}
-
-/**
- * A class to validate arbitrary data using functional rules.
- */
-export class Validator<T> {
-    constructor(
-        /** The rules used to validate input objects. */
-        protected readonly rules: ValidationRules,
-    ) {}
-
-    /**
-     * Attempt to validate the input data.
-     * If it is valid, it is type aliased as Valid<T>.
-     * If it is invalid, a ValidationError is thrown.
-     * @param data
-     */
-    public async validate(data: unknown): Promise<Valid<T>> {
-        const messages = await this.validateAndGetErrors(data)
-        if ( messages.any() ) {
-            throw new ValidationError<T>(data, this, messages)
-        }
-
-        return data as Valid<T>
-    }
-
-    /**
-     * Returns true if the given data is valid and type aliases it as Valid<T>.
-     * @param data
-     */
-    public async isValid(data: unknown): Promise<boolean> {
-        return !(await this.validateAndGetErrors(data)).any()
-    }
-
-    /**
-     * Apply the validation rules to the data object and return any error messages.
-     * @param data
-     * @protected
-     */
-    protected async validateAndGetErrors(data: unknown): Promise<Messages> {
-        const messages = new Messages()
-        const params: ValidatorFunctionParams = { data }
-
-        for ( const key in this.rules ) {
-            if ( !Object.prototype.hasOwnProperty.call(this.rules, key) ) {
-                continue
-            }
-
-            // This walks over all of the values in the data structure using the nested
-            // key notation. It's not type-safe, but neither is the original input object
-            // yet, so it's useful here.
-            for ( const walkEntry of dataWalkUnsafe<any>(data as any, key) ) {
-                let [entry, dataKey] = walkEntry  // eslint-disable-line prefer-const
-                const rules = (Array.isArray(this.rules[key]) ? this.rules[key] : [this.rules[key]]) as ValidatorFunction[]
-
-                for ( const rule of rules ) {
-                    const result: ValidationResult = await rule(dataKey, entry, params)
-
-                    if ( !result.valid ) {
-                        let errors = ['is invalid']
-
-                        if ( Array.isArray(result.message) && result.message.length ) {
-                            errors = result.message
-                        } else if ( !Array.isArray(result.message) && result.message ) {
-                            errors = [result.message]
-                        }
-
-                        for ( const error of errors ) {
-                            if ( !messages.has(dataKey, error) ) {
-                                messages.put(dataKey, error)
-                            }
-                        }
-                    }
-
-                    if ( result.valid && result.castValue ) {
-                        entry = result.castValue
-                        data = dataSetUnsafe(dataKey, entry, data as any)
-                    }
-
-                    if ( result.stopValidation ) {
-                        break  // move on to the next field
-                    }
-                }
-            }
-        }
-
-        return messages
-    }
-}

src/forms/index.ts

@@ -1,9 +0,0 @@
-export * from './rules/types'
-export * as Rule from './rules/rules'
-
-export * from './unit/Forms'
-
-export * from './Validator'
-export * from './FormRequest'
-
-export * from './middleware'

src/forms/middleware.ts

@@ -1,34 +0,0 @@
-import {Instantiable} from '../di'
-import {FormRequest} from './FormRequest'
-import {ValidationError} from './Validator'
-import {ResponseObject, RouteHandler} from '../http/routing/Route'
-import {Request} from '../http/lifecycle/Request'
-
-/**
- * Builds a middleware function that validates a request's input against
- * the given form request class and registers the FormRequest class into
- * the request container.
- *
- * @example
- * ```typescript
- * Route.group(...).pre(formRequest(MyFormRequestClass))
- * ```
- *
- * @param formRequestClass
- */
-export function formRequest<T>(formRequestClass: Instantiable<FormRequest<T>>): RouteHandler {
-    return async function formRequestRouteHandler(request: Request): Promise<ResponseObject> {
-        const formRequestInstance = <FormRequest<T>> request.make(formRequestClass)
-
-        try {
-            await formRequestInstance.get()
-            request.registerSingletonInstance<FormRequest<T>>(formRequestClass, formRequestInstance)
-        } catch (e: unknown) {
-            if ( e instanceof ValidationError ) {
-                return e.errors.toJSON()
-            }
-
-            throw e
-        }
-    }
-}

src/forms/rules/arrays.ts

@@ -1,150 +0,0 @@
-import {ValidationResult, ValidatorFunction} from './types'
-
-/** Requires the input value to be an array. */
-function is(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( Array.isArray(inputValue) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be an array',
-    }
-}
-
-/** Requires the values in the input value array to be distinct. */
-function distinct(fieldName: string, inputValue: unknown): ValidationResult {
-    const arr = is(fieldName, inputValue)
-    if ( !arr.valid ) {
-        return arr
-    }
-
-    if ( Array.isArray(inputValue) && (new Set(inputValue)).size === inputValue.length ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must not contain duplicate values',
-    }
-}
-
-/**
- * Builds a validator function that requires the input array to contain the given value.
- * @param value
- */
-function includes(value: unknown): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        const arr = is(fieldName, inputValue)
-        if ( !arr.valid ) {
-            return arr
-        }
-
-        if ( Array.isArray(inputValue) && inputValue.includes(value) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must include ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input array NOT to contain the given value.
- * @param value
- */
-function excludes(value: unknown): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        const arr = is(fieldName, inputValue)
-        if ( !arr.valid ) {
-            return arr
-        }
-
-        if ( Array.isArray(inputValue) && !inputValue.includes(value) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must not include ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input array to have exactly `len` many entries.
- * @param len
- */
-function length(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        const arr = is(fieldName, inputValue)
-        if ( !arr.valid ) {
-            return arr
-        }
-
-        if ( Array.isArray(inputValue) && inputValue.length === len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be exactly of length ${len}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input array to have at least `len` many entries.
- * @param len
- */
-function lengthMin(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        const arr = is(fieldName, inputValue)
-        if ( !arr.valid ) {
-            return arr
-        }
-
-        if ( Array.isArray(inputValue) && inputValue.length >= len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at least length ${len}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input array to have at most `len` many entries.
- * @param len
- */
-function lengthMax(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        const arr = is(fieldName, inputValue)
-        if ( !arr.valid ) {
-            return arr
-        }
-
-        if ( Array.isArray(inputValue) && inputValue.length <= len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at most length ${len}`,
-        }
-    }
-}
-
-export const Arr = {
-    is,
-    distinct,
-    includes,
-    excludes,
-    length,
-    lengthMin,
-    lengthMax,
-}

src/forms/rules/inference.ts

@@ -1,80 +0,0 @@
-import {infer as inferUtil} from '../../util'
-import {ValidationResult} from './types'
-
-/** Attempt to infer the native type of a string value. */
-function infer(fieldName: string, inputValue: unknown): ValidationResult {
-    return {
-        valid: true,
-        castValue: typeof inputValue === 'string' ? inferUtil(inputValue) : inputValue,
-    }
-}
-
-/**
- * Casts the input value to a boolean.
- * Note that this assumes the value may be boolish. The strings "true", "True",
- * "TRUE", and "1" evaluate to `true`, while "false", "False", "FALSE", and "0"
- * evaluate to `false`.
- * @param fieldName
- * @param inputValue
- */
-function boolean(fieldName: string, inputValue: unknown): ValidationResult {
-    let castValue = Boolean(inputValue)
-
-    if ( ['true', 'True', 'TRUE', '1'].includes(String(inputValue)) ) {
-        castValue = true
-    }
-    if ( ['false', 'False', 'FALSE', '0'].includes(String(inputValue)) ) {
-        castValue = false
-    }
-
-    return {
-        valid: true,
-        castValue,
-    }
-}
-
-/** Casts the input value to a string. */
-function string(fieldName: string, inputValue: unknown): ValidationResult {
-    return {
-        valid: true,
-        castValue: String(inputValue),
-    }
-}
-
-/** Casts the input value to a number, if it is numerical. Fails otherwise. */
-function numeric(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( !isNaN(parseFloat(String(inputValue))) ) {
-        return {
-            valid: true,
-            castValue: parseFloat(String(inputValue)),
-        }
-    }
-
-    return {
-        valid: false,
-        message: 'must be numeric',
-    }
-}
-
-/** Casts the input value to an integer. Fails otherwise. */
-function integer(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( !isNaN(parseInt(String(inputValue), 10)) ) {
-        return {
-            valid: true,
-            castValue: parseInt(String(inputValue), 10),
-        }
-    }
-
-    return {
-        valid: false,
-        message: 'must be an integer',
-    }
-}
-
-export const Cast = {
-    infer,
-    boolean,
-    string,
-    numeric,
-    integer,
-}

src/forms/rules/numeric.ts

@@ -1,210 +0,0 @@
-import {ValidationResult, ValidatorFunction} from './types'
-
-/**
- * Builds a validator function that requires the input value to be greater than some value.
- * @param value
- */
-function greaterThan(value: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( Number(inputValue) > value ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be greater than ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to be at least some value.
- * @param value
- */
-function atLeast(value: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( Number(inputValue) >= value ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at least ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to be less than some value.
- * @param value
- */
-function lessThan(value: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( Number(inputValue) < value ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be less than ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to be at most some value.
- * @param value
- */
-function atMost(value: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( Number(inputValue) <= value ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at most ${value}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have exactly `num` many digits.
- * @param num
- */
-function digits(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).replace('.', '').length === num ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must have exactly ${num} digits`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have at least `num` many digits.
- * @param num
- */
-function digitsMin(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).replace('.', '').length >= num ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must have at least ${num} digits`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have at most `num` many digits.
- * @param num
- */
-function digitsMax(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).replace('.', '').length <= num ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must have at most ${num} digits`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to end with the given number sequence.
- * @param num
- */
-function ends(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).endsWith(String(num)) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must end with "${num}"`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to begin with the given number sequence.
- * @param num
- */
-function begins(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).startsWith(String(num)) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must begin with "${num}"`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to be a multiple of the given number.
- * @param num
- */
-function multipleOf(num: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( parseFloat(String(inputValue)) % num === 0 ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be a multiple of ${num}`,
-        }
-    }
-}
-
-/** Requires the input value to be even. */
-function even(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( parseFloat(String(inputValue)) % 2 === 0 ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be even',
-    }
-}
-
-/** Requires the input value to be odd. */
-function odd(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( parseFloat(String(inputValue)) % 2 === 0 ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be odd',
-    }
-}
-
-export const Num = {
-    greaterThan,
-    atLeast,
-    lessThan,
-    atMost,
-    digits,
-    digitsMin,
-    digitsMax,
-    ends,
-    begins,
-    multipleOf,
-    even,
-    odd,
-}

src/forms/rules/presence.ts

@@ -1,191 +0,0 @@
-import {ValidationResult, ValidatorFunction} from './types'
-import {UniversalPath} from '../../util'
-
-/** Requires the given input value to be some form of affirmative boolean. */
-function accepted(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( ['yes', 'Yes', 'YES', 1, true, 'true', 'True', 'TRUE'].includes(String(inputValue)) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be accepted',
-    }
-}
-
-/** Requires the given input value to be some form of boolean. */
-function boolean(fieldName: string, inputValue: unknown): ValidationResult {
-    const boolish = ['true', 'True', 'TRUE', '1', 'false', 'False', 'FALSE', '0', true, false, 1, 0]
-    if ( boolish.includes(String(inputValue)) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be true or false',
-    }
-}
-
-/** Requires the input value to be of type string. */
-function string(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( typeof inputValue === 'string' ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be a string',
-    }
-}
-
-/** Requires the given input value to be present and non-nullish. */
-function required(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( typeof inputValue !== 'undefined' && inputValue !== null && inputValue !== '' ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'is required',
-        stopValidation: true,
-    }
-}
-
-/** Alias of required(). */
-function present(fieldName: string, inputValue: unknown): ValidationResult {
-    return required(fieldName, inputValue)
-}
-
-/** Alias of required(). */
-function filled(fieldName: string, inputValue: unknown): ValidationResult {
-    return required(fieldName, inputValue)
-}
-
-/** Requires the given input value to be absent or nullish. */
-function prohibited(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( typeof inputValue === 'undefined' || inputValue === null || inputValue === '' ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'is not allowed',
-        stopValidation: true,
-    }
-}
-
-/** Alias of prohibited(). */
-function absent(fieldName: string, inputValue: unknown): ValidationResult {
-    return prohibited(fieldName, inputValue)
-}
-
-/** Alias of prohibited(). */
-function empty(fieldName: string, inputValue: unknown): ValidationResult {
-    return prohibited(fieldName, inputValue)
-}
-
-/**
- * Builds a validator function that requires the given input to be found in an array of values.
- * @param values
- */
-function foundIn(values: any[]): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( values.includes(inputValue) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be one of: ${values.join(', ')}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the given input NOT to be found in an array of values.
- * @param values
- */
-function notFoundIn(values: any[]): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( values.includes(inputValue) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be one of: ${values.join(', ')}`,
-        }
-    }
-}
-
-/** Requires the input value to be number-like. */
-function numeric(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( !isNaN(parseFloat(String(inputValue))) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be numeric',
-    }
-}
-
-/** Requires the given input value to be integer-like. */
-function integer(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( !isNaN(parseInt(String(inputValue), 10)) && parseInt(String(inputValue), 10) === parseFloat(String(inputValue)) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be an integer',
-    }
-}
-
-/** Requires the given input value to be a UniversalPath. */
-function file(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( inputValue instanceof UniversalPath ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be a file',
-    }
-}
-
-/**
- * A special validator function that marks a field as optional.
- * If the value of the field is nullish, no further validation rules will be applied.
- * If it is non-nullish, validation will continue.
- * @param fieldName
- * @param inputValue
- */
-function optional(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( inputValue ?? true ) {
-        return {
-            valid: true,
-            stopValidation: true,
-        }
-    }
-
-    return { valid: true }
-}
-
-export const Is = {
-    accepted,
-    boolean,
-    string,
-    required,
-    present,
-    filled,
-    prohibited,
-    absent,
-    empty,
-    foundIn,
-    notFoundIn,
-    numeric,
-    integer,
-    file,
-    optional,
-}

src/forms/rules/provided/DateValidator.ts

@@ -1,31 +0,0 @@
-/*
-import {Injectable} from '@extollo/di'
-import {Validator} from '../Validator'
-import {ValidationResult} from "../types";
-
-@Injectable()
-export class DateValidator extends Validator {
-    protected names: string[] = [
-        'date',
-        'date.after',
-        'date.at_least',
-        'date.before',
-        'date.at_most',
-        'date.equals',
-        'date.format',
-    ]
-
-    public matchName(name: string): boolean {
-        return this.names.includes(name)
-    }
-
-    validate(fieldName: string, inputValue: any, params: { name: string; params: any }): ValidationResult {
-        switch ( params.name ) {
-
-        }
-
-
-        return { valid: false }
-    }
-}
-*/

src/forms/rules/rules.ts

@@ -1,5 +0,0 @@
-export { Arr } from './arrays'
-export { Cast } from './inference'
-export { Num } from './numeric'
-export { Is } from './presence'
-export { Str } from './strings'

src/forms/rules/strings.ts

@@ -1,245 +0,0 @@
-import {ValidationResult, ValidatorFunction} from './types'
-import {isJSON} from '../../util'
-
-/**
- * String-related validation rules.
- */
-const regexes: {[key: string]: RegExp} = {
-    'string.is.alpha': /[a-zA-Z]*/,
-    'string.is.alpha_num': /[a-zA-Z0-9]*/,
-    'string.is.alpha_dash': /[a-zA-Z-]*/,
-    'string.is.alpha_score': /[a-zA-Z_]*/,
-    'string.is.alpha_num_dash_score': /[a-zA-Z\-_0-9]*/,
-    'string.is.email': /(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)])/,  // eslint-disable-line no-control-regex
-    'string.is.ip': /((^\s*((([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\s*$)|(^\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:)))(%.+)?\s*$))/,
-    'string.is.ip.v4': /(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}/,
-    'string.is.ip.v6': /(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]+|::(ffff(:0{1,4})?:)?((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9]))/,
-    'string.is.mime': /^(?=[-a-z]{1,127}\/[-.a-z0-9]{1,127}$)[a-z]+(-[a-z]+)*\/[a-z0-9]+([-.][a-z0-9]+)*$/,
-    'string.is.url': /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=+$,\w]+@)?[A-Za-z0-9.-]+|(?:www\.|[-;:&=+$,\w]+@)[A-Za-z0-9.-]+)((?:\/[+~%/.\w\-_]*)?\??(?:[-+=&;%@.\w_]*)#?(?:[.!/\\\w]*))?)/,
-    'string.is.uuid': /^[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}$/,
-}
-
-function validateRex(key: string, inputValue: unknown, message: string): ValidationResult {
-    if ( regexes[key].test(String(inputValue)) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message,
-    }
-}
-
-/** Requires the input value to be alphabetical characters only. */
-function alpha(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.alpha', inputValue, 'must be alphabetical only')
-}
-
-/** Requires the input value to be alphanumeric characters only. */
-function alphaNum(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.alpha_num', inputValue, 'must be alphanumeric only')
-}
-
-/** Requires the input value to be alphabetical characters or the "-" character only. */
-function alphaDash(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.alpha_dash', inputValue, 'must be alphabetical and dashes only')
-}
-
-/** Requires the input value to be alphabetical characters or the "_" character only. */
-function alphaScore(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.alpha_score', inputValue, 'must be alphabetical and underscores only')
-}
-
-/** Requires the input value to be alphabetical characters, numeric characters, "-", or "_" only. */
-function alphaNumDashScore(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.alpha_num_dash_score', inputValue, 'must be alphanumeric, dashes, and underscores only')
-}
-
-/** Requires the input value to be a valid RFC email address format. */
-function email(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.email', inputValue, 'must be an email address')
-}
-
-/** Requires the input value to be a valid IPv4 or IPv6 address. */
-function ip(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.ip', inputValue, 'must be a valid IP address')
-}
-
-/** Requires the input value to be a valid IPv4 address. */
-function ipv4(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.ip.v4', inputValue, 'must be a valid IP version 4 address')
-}
-
-/** Requires the input value to be a valid IPv6 address. */
-function ipv6(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.ip.v6', inputValue, 'must be a valid IP version 6 address')
-}
-
-/** Requires the input value to be a valid file MIME type. */
-function mime(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.mime', inputValue, 'must be a valid MIME-type')
-}
-
-/** Requires the input value to be a valid RFC URL format. */
-function url(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.url', inputValue, 'must be a valid URL')
-}
-
-/** Requires the input value to be a valid RFC UUID format. */
-function uuid(fieldName: string, inputValue: unknown): ValidationResult {
-    return validateRex('string.is.uuid', inputValue, 'must be a valid UUID')
-}
-
-/**
- * Builds a validation function that requires the input value to match the given regex.
- * @param rex
- */
-function regex(rex: RegExp): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( rex.test(String(inputValue)) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: 'is not valid',
-        }
-    }
-}
-
-/**
- * Builds a validation function that requires the input to NOT match the given regex.
- * @param rex
- */
-function notRegex(rex: RegExp): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( !rex.test(String(inputValue)) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: 'is not valid',
-        }
-    }
-}
-
-/**
- * Builds a validation function that requires the given input to end with the substring.
- * @param substr
- */
-function ends(substr: string): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).endsWith(substr) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must end with "${substr}"`,
-        }
-    }
-}
-
-/**
- * Builds a validation function that requires the given input to begin with the substring.
- * @param substr
- */
-function begins(substr: string): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).startsWith(substr) ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must begin with "${substr}"`,
-        }
-    }
-}
-
-/** Requires the input value to be a valid JSON string. */
-function json(fieldName: string, inputValue: unknown): ValidationResult {
-    if ( isJSON(String(inputValue)) ) {
-        return { valid: true }
-    }
-
-    return {
-        valid: false,
-        message: 'must be valid JSON',
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have exactly len many characters.
- * @param len
- */
-function length(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).length === len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be exactly of length ${len}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have at least len many characters.
- * @param len
- */
-function lengthMin(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).length >= len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at least length ${len}`,
-        }
-    }
-}
-
-/**
- * Builds a validator function that requires the input value to have at most len many characters.
- * @param len
- */
-function lengthMax(len: number): ValidatorFunction {
-    return (fieldName: string, inputValue: unknown): ValidationResult => {
-        if ( String(inputValue).length <= len ) {
-            return { valid: true }
-        }
-
-        return {
-            valid: false,
-            message: `must be at most length ${len}`,
-        }
-    }
-}
-
-export const Str = {
-    alpha,
-    alphaNum,
-    alphaDash,
-    alphaScore,
-    alphaNumDashScore,
-    email,
-    ip,
-    ipv4,
-    ipv6,
-    mime,
-    url,
-    uuid,
-    regex,
-    notRegex,
-    ends,
-    begins,
-    json,
-    length,
-    lengthMin,
-    lengthMax,
-}