Start CLI and db schema queries

cli/src/CLIAppUnit.ts

@@ -2,6 +2,7 @@ import LifecycleUnit from '../../lib/src/lifecycle/Unit.ts'
 import {CLIService} from './service/CLI.service.ts'
 import {Unit} from '../../lib/src/lifecycle/decorators.ts'
 import {Logging} from '../../lib/src/service/logging/Logging.ts'
+import {parseArgs} from '../../lib/src/external/std.ts'
 
 @Unit()
 export default class CLIAppUnit extends LifecycleUnit {
@@ -13,6 +14,24 @@ export default class CLIAppUnit extends LifecycleUnit {
     public async up() {
         this.logger.verbose(`Handling CLI invocation...`)
         const args = Deno.args
-        console.log('args', {args})
+        const parsed = parseArgs(args)
+        console.log('args', {args, parsed})
+
+        const keyword = parsed._[0] || ''
+        const directive = this.cli.get_directive_by_keyword(String(keyword))
+
+        this.logger.verbose(`Parsed directive: "${keyword}"`)
+
+        if ( !directive ) {
+            const help = this.cli.get_directive_by_keyword('help')
+            if ( !help ) throw new Error('Usage directive not registered!')
+
+            if ( keyword ) this.logger.error(`Invalid directive keyword: ${keyword}`)
+            await help.prepare(args, parsed)
+            await help.invoke()
+        } else {
+            await directive.prepare(args, parsed)
+            await directive.invoke()
+        }
     }
 }

cli/src/CLIUnit.ts

@@ -2,6 +2,7 @@ import LifecycleUnit from '../../lib/src/lifecycle/Unit.ts'
 import {CLIService} from './service/CLI.service.ts'
 import {Unit} from '../../lib/src/lifecycle/decorators.ts'
 import {UsageDirective} from './directive/UsageDirective.ts'
+import {AboutDirective} from './directive/AboutDirective.ts'
 
 @Unit()
 export default class CLIUnit extends LifecycleUnit {
@@ -11,5 +12,6 @@ export default class CLIUnit extends LifecycleUnit {
 
     public async up() {
         this.cli.register_directive(this.make(UsageDirective))
+        this.cli.register_directive(this.make(AboutDirective))
     }
 }

cli/src/directive/AboutDirective.ts

@@ -0,0 +1,30 @@
+import {Directive} from './Directive.ts'
+import {Injectable} from '../../../di/src/decorator/Injection.ts'
+import {CLIService} from '../service/CLI.service.ts'
+
+@Injectable()
+export class AboutDirective extends Directive {
+    public readonly keyword = 'about'
+    public readonly help = 'Display information about Daton'
+
+    constructor(
+        protected readonly cli: CLIService,
+    ) { super() }
+
+    public async invoke() {
+        if ( this.cli.show_logo() ) {
+            console.log('')
+            console.log(this.cli.get_logo())
+        }
+
+        [
+            '',
+            'Daton is an opinionated application framework written for Deno. It provides a rich library of utilities, an ORM, dependency injector, routing stack, and logic for controllers, models, middleware, and configuration.',
+            '',
+            `Daton was created by and is © ${(new Date).getFullYear()} Garrett Mills. It is licensed for use by the terms of the MIT license.`,
+            '',
+            'Source code: https://code.garrettmills.dev/garrettmills/daton',
+            '',
+        ].map(x => console.log(x))
+    }
+}

cli/src/directive/Directive.ts

@@ -1,14 +1,25 @@
 import AppClass from '../../../lib/src/lifecycle/AppClass.ts'
 import {Logging} from '../../../lib/src/service/logging/Logging.ts'
+import {parseArgs} from '../../../lib/src/external/std.ts'
+
+export type ParsedArguments = { [key: string]: string | number | Array<string | number> }
 
 export abstract class Directive extends AppClass {
     public abstract readonly keyword: string
     public abstract readonly help: string
 
+    protected argv: string[] = []
+    protected parsed_argv: ParsedArguments = {}
+
     static options() {
         return []
     }
 
+    public prepare(argv: string[], parsed_arguments: ParsedArguments) {
+        this.argv = argv
+        this.parsed_argv = parsed_arguments
+    }
+
     public abstract invoke(): any
 
     success(message: any) {

cli/src/directive/UsageDirective.ts

@@ -1,10 +1,47 @@
 import {Directive} from './Directive.ts'
+import {CLIService} from "../service/CLI.service.ts";
+import {Injectable} from "../../../di/src/decorator/Injection.ts";
 
+@Injectable()
 export class UsageDirective extends Directive {
     public readonly keyword = 'help'
     public readonly help = 'Display usage information'
 
+    constructor(
+        protected readonly cli: CLIService,
+    ) { super() }
+
     public async invoke() {
-        console.log('Hello, from Daton CLI.')
+        console.log('')
+        if ( this.cli.show_logo() ) {
+            console.log(this.cli.get_logo())
+            console.log('')
+        }
+
+        console.log('Welcome to the Daton CLI. This tool can help you interact with your Daton application.\n')
+        console.log('To get started, specify one of the directives below. You can always specify the --help option to get more information about a directive.')
+        console.log('')
+
+        const usages = this.cli.get_directives().map((directive: Directive): string[] => {
+            return [directive.keyword, directive.help]
+        })
+
+        const pad_length = usages.max(grp => grp[0].length) + 2
+
+        const padded_usages = usages.map(grp => {
+            const keyword = grp[0]
+            if ( keyword.length < pad_length ) {
+                const pad = Array(pad_length - keyword.length).fill(' ').join('')
+                return [`${pad}${keyword}`, grp[1]]
+            }
+
+            return grp
+        })
+
+        padded_usages.each(grp => {
+            console.log(`${grp[0]} : ${grp[1]}`)
+        })
+
+        console.log('')
     }
 }

cli/src/service/CLI.service.ts

@@ -27,7 +27,6 @@ export class CLIService extends AppClass {
         protected readonly logger: Logging,
     ) { super() }
 
-
     /**
      * Find a registered directive using its keyword, if one exists.
      * @param {string} keyword
@@ -57,4 +56,17 @@ export class CLIService extends AppClass {
         this.logger.verbose(`Registering CLI directive with keyword: ${directive.keyword}`)
         this.directives.push(directive)
     }
+
+    public show_logo() {
+        return true
+    }
+
+    public get_logo() {
+        return `██████╗  █████╗ ████████╗ ██████╗ ███╗   ██╗
+██╔══██╗██╔══██╗╚══██╔══╝██╔═══██╗████╗  ██║
+██║  ██║███████║   ██║   ██║   ██║██╔██╗ ██║
+██║  ██║██╔══██║   ██║   ██║   ██║██║╚██╗██║
+██████╔╝██║  ██║   ██║   ╚██████╔╝██║ ╚████║
+╚═════╝ ╚═╝  ╚═╝   ╚═╝    ╚═════╝ ╚═╝  ╚═══╝`
+    }
 }