Add support for templates

src/Directive.ts

@@ -24,6 +24,10 @@ export abstract class Directive extends AppClass {
         return ''
     }
 
+    public getOptions(): OptionDefinition[] {
+        return []
+    }
+
     public abstract handle(argv: string[]): void | Promise<void>
 
     private _setOptionValues(optionValues: any) {
@@ -111,10 +115,6 @@ export abstract class Directive extends AppClass {
         }
     }
 
-    public getOptions(): OptionDefinition[] {
-        return []
-    }
-
     public getResolvedOptions(): CLIOption<any>[] {
         return this.getOptions().map(option => {
             if ( typeof option === 'string' ) {

src/Template.ts

@@ -0,0 +1,9 @@
+import {UniversalPath} from '@extollo/util'
+
+export interface Template {
+    name: string,
+    fileSuffix: string,
+    description: string,
+    baseAppPath: string[],
+    render: (name: string, fullCanonicalName: string, targetFilePath: UniversalPath) => string | Promise<string>
+}

src/directive/TemplateDirective.ts

@@ -0,0 +1,87 @@
+import {Directive, OptionDefinition} from "../Directive"
+import {Injectable, Inject} from "@extollo/di"
+import {ErrorWithContext} from "@extollo/util"
+import {PositionalOption} from "./options/PositionalOption"
+import {CommandLine} from "../service"
+
+@Injectable()
+export class TemplateDirective extends Directive {
+    @Inject()
+    protected readonly cli!: CommandLine
+
+    getKeywords(): string | string[] {
+        return ['new', 'make']
+    }
+
+    getDescription(): string {
+        return 'create a new file from a registered template'
+    }
+
+    getOptions(): OptionDefinition[] {
+        const registeredTemplates = this.cli.getTemplates()
+        const template = new PositionalOption('template_name', 'the template to base the new file on (e.g. model, controller)')
+        template.whitelist(...registeredTemplates.pluck('name'))
+
+        const destination = new PositionalOption('file_name', 'canonical name of the file to create (e.g. auth:Group, dash:Activity)')
+
+        return [template, destination]
+    }
+
+    getHelpText(): string {
+        const registeredTemplates = this.cli.getTemplates()
+
+        return [
+            'Modules in Extollo register templates that can be used to quickly create common file types.',
+            '',
+            'For example, you can create a new model from @extollo/orm using the "model" template:',
+            '',
+            './ex new model auth:Group',
+            '',
+            'This would create a new Group model in the ./src/app/models/auth/Group.model.ts file.',
+            '',
+            'AVAILABLE TEMPLATES:',
+            '',
+            ...(registeredTemplates.map(template => {
+                return `  - ${template.name}: ${template.description}`
+            }))
+        ].join('\n')
+    }
+
+    async handle(argv: string[]) {
+        const templateName: string = this.option('template_name')
+        const destinationName: string = this.option('file_name')
+
+        if ( destinationName.includes('/') || destinationName.includes('\\') ) {
+            this.error(`The destination should be a canonical name, not a file path.`)
+            this.error(`Reference sub-directories using the : character instead.`)
+            this.error(`Did you mean ${destinationName.replace(/\/|\\/g, ':')}?`)
+            process.exitCode = 1
+            return
+        }
+
+        const template = this.cli.getTemplate(templateName)
+        if ( !template ) {
+            throw new ErrorWithContext(`Unable to find template supposedly registered with name: ${templateName}`, {
+                templateName,
+                destinationName,
+            })
+        }
+
+        const name = destinationName.split(':').reverse()[0]
+        const path = this.app().path('..', 'src', 'app', ...template.baseAppPath, ...(`${destinationName}${template.fileSuffix}`).split(':'))
+
+        if ( await path.exists() ) {
+            this.error(`File already exists: ${path}`)
+            process.exitCode = 1
+            return
+        }
+
+        // Make sure the parent direction exists
+        await path.concat('..').mkdir()
+
+        const contents = await template.render(name, destinationName, path.clone())
+        await path.write(contents)
+
+        this.success(`Created new ${template.name} in ${path}`)
+    }
+}

src/service/CommandLine.ts

@@ -1,15 +1,25 @@
-import {Unit} from "@extollo/lib"
+import {Unit, Logging} from "@extollo/lib"
-import {Singleton, Instantiable} from "@extollo/di"
+import {Singleton, Instantiable, Inject} from "@extollo/di"
 import {Collection} from "@extollo/util"
 import {CommandLineApplication} from "./CommandLineApplication"
-import {Directive} from "../Directive";
+import {Directive} from "../Directive"
+import {Template} from "../Template"
+import {directive_template} from "../templates/directive"
 
 @Singleton()
 export class CommandLine extends Unit {
+    @Inject()
+    protected readonly logging!: Logging
+
     protected directives: Collection<Instantiable<Directive>> = new Collection<Instantiable<Directive>>()
+    protected templates: Collection<Template> = new Collection<Template>()
 
     constructor() { super() }
 
+    async up() {
+        this.registerTemplate(directive_template)
+    }
+
     public isCLI() {
         return this.app().hasUnit(CommandLineApplication)
     }
@@ -36,4 +46,25 @@ export class CommandLine extends Unit {
     public getDirectives() {
         return this.directives.clone()
     }
+
+    public registerTemplate(template: Template) {
+        if ( !this.templates.firstWhere('name', '=', template.name) ) {
+            this.templates.push(template)
+        } else {
+            this.logging.warn(`Duplicate template will not be registered: ${template.name}`)
+            this.logging.debug(`Duplicate template registered at: ${(new Error()).stack}`)
+        }
+    }
+
+    public hasTemplate(name: string) {
+        return !!this.templates.firstWhere('name', '=', name)
+    }
+
+    public getTemplate(name: string) {
+        return this.templates.firstWhere('name', '=', name)
+    }
+
+    public getTemplates() {
+        return this.templates.clone()
+    }
 }

src/service/CommandLineApplication.ts

@@ -4,6 +4,7 @@ import {CommandLine} from "./CommandLine"
 import {UsageDirective} from "../directive/UsageDirective";
 import {Directive} from "../Directive";
 import {ShellDirective} from "../directive/ShellDirective";
+import {TemplateDirective} from "../directive/TemplateDirective";
 
 @Singleton()
 export class CommandLineApplication extends Unit {
@@ -23,6 +24,7 @@ export class CommandLineApplication extends Unit {
     public async up() {
         this.cli.registerDirective(UsageDirective)
         this.cli.registerDirective(ShellDirective)
+        this.cli.registerDirective(TemplateDirective)
 
         const argv = process.argv.slice(2)
         const match = this.cli.getDirectives()

src/templates/directive.ts

@@ -0,0 +1,40 @@
+import {Template} from "../Template"
+import {UniversalPath} from "@extollo/util"
+
+const directive_template: Template = {
+    name: 'directive',
+    fileSuffix: '.directive.ts',
+    description: 'Create a new Directive class which adds functionality to the ./ex command.',
+    baseAppPath: ['directives'],
+    render(name: string, fullCanonicalName: string, targetFilePath: UniversalPath) {
+        return `import {Directive, OptionDefinition} from "@extollo/cli"
+import {Injectable} from "@extollo/di"
+
+/**
+ * ${name} Directive
+ * ---------------------------------------------------
+ * Put some description here.
+ */
+@Injectable()
+export class ${name}Directive extends Directive {
+    getKeywords(): string | string[] {
+        return ['${name.toLowerCase()}']
+    }
+
+    getDescription(): string {
+        return ''
+    }
+
+    getOptions(): OptionDefinition[] {
+        return []
+    }
+
+    async handle(argv: string[]) {
+
+    }
+}
+`
+    }
+}
+
+export { directive_template }

src/tsconfig.json

@@ -0,0 +1,10 @@
+`{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es5",
+    "sourceMap": true
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}