wip: general approach for cli

.eslintrc.json

@@ -16,6 +16,9 @@
     "es6": true,
     "jest/globals": true
   },
+  "globals": {
+    "Deno": true
+  },
   "rules": {
     // Error out for code formatting errors
     "prettier/prettier": "error",

cli/arguments-parser/arguments-parser.ts

@@ -0,0 +1,12 @@
+import { parseArgv } from '../core/parse-argv.ts';
+
+export class ArgumentsParser {
+  static parse(cliArguments: string[]) {
+    const [commandName, ...arguments] = cliArguments;
+
+    return {
+      commandName,
+      options: parseArgv(arguments),
+    };
+  }
+}

cli/bootstrapper.ts

@@ -0,0 +1,28 @@
+import { CommandFactory } from './commands/command-factory.ts';
+import { ArgumentsParser } from './arguments-parser/arguments-parser.ts';
+import { Options } from './config/options.ts';
+import { CommandInterface } from './commands/command/CommandInterface.ts';
+
+export class Bootstrapper {
+  private readonly commandFactory: CommandFactory;
+  private readonly argumentsParser: ArgumentsParser;
+
+  private options?: Options;
+  private command?: CommandInterface;
+
+  constructor() {
+    this.commandFactory = new CommandFactory();
+    this.argumentsParser = ArgumentsParser;
+  }
+
+  public async run(cliArguments: string[]) {
+    const { commandName, options } = this.argumentsParser.parse(cliArguments);
+
+    this.options = new Options(options);
+    this.command = this.commandFactory.createCommand(commandName);
+
+    // Command agnostic stuff here
+
+    await this.command.execute(this.options);
+  }
+}

cli/commands/command-factory.ts

@@ -0,0 +1,15 @@
+import { NonExistentCommand } from './command/non-existent-command.ts';
+import { BuildCommand } from './command/build-command.ts';
+
+export class CommandFactory {
+  constructor() {}
+
+  public createCommand(commandName) {
+    switch (commandName) {
+      case 'build':
+        return new BuildCommand();
+      default:
+        return new NonExistentCommand(commandName);
+    }
+  }
+}

cli/commands/command/CommandInterface.ts

@@ -0,0 +1,6 @@
+import { Options } from '../../config/options.ts';
+
+export interface CommandInterface {
+  name: string;
+  execute: (options: Options) => Promise<void>;
+}

cli/commands/command/build-command.ts

@@ -1,17 +1,15 @@
-/* eslint-disable no-console */
+import { CommandInterface } from './CommandInterface.ts';
 import { exec, OutputMode } from 'https://deno.land/x/exec@0.0.5/mod.ts';
-import { CliOptions } from '../core/cli-options.ts';
+import { Options } from '../../config/options.ts';
 
-export class Bootstrapper {
-  private readonly options: CliOptions;
+export class BuildCommand implements CommandInterface {
+  public readonly name: string;
 
-  constructor(cliOptions: CliOptions) {
-    this.options = cliOptions;
+  constructor(name: string) {
+    this.name = name;
   }
 
-  public async run() {
-    console.log('using options', this.options);
-
+  public async execute(options: Options) {
     const result = await exec('docker run -it unityci/editor:2020.3.15f2-base-1 /bin/bash -c "echo test"', {
       output: OutputMode.Capture,
       continueOnError: true,
@@ -19,6 +17,7 @@ export class Bootstrapper {
       // verbose: true,
     });
 
+    console.log(options);
     console.log(result.output);
   }
 }

cli/commands/command/non-existent-command.ts

@@ -0,0 +1,14 @@
+import { CommandInterface } from './CommandInterface.ts';
+import { Options } from '../../config/options.ts';
+
+export class NonExistentCommand implements CommandInterface {
+  public name: string;
+
+  constructor(name: string) {
+    this.name = name;
+  }
+
+  public async execute(options: Options) {
+    throw new Error(`Command ${this.name} does not exist`);
+  }
+}

cli/config/options.ts

@@ -0,0 +1,9 @@
+import { CliOptions } from '../core/cli-options.ts';
+
+export class Options {
+  public options: CliOptions;
+
+  constructor(optionsFromCli) {
+    this.options = optionsFromCli;
+  }
+}

cli/core/kernel.ts

@@ -1,11 +0,0 @@
-import { parseArgv } from './parse-argv.ts';
-import { Bootstrapper } from '../controller/bootstrapper.ts';
-
-export class Kernel {
-  public async run() {
-    const cliOptions = parseArgv(Deno.args);
-
-    const bootstrapper = new Bootstrapper(cliOptions);
-    bootstrapper.run();
-  }
-}

cli/index.ts

@@ -1,7 +1,11 @@
-import { Kernel } from './core/kernel.ts';
+/* eslint-disable no-console */
+import { Bootstrapper } from './bootstrapper.ts';
 
 (async () => {
-  const kernel = new Kernel();
-
-  await kernel.run();
+  try {
+    await new Bootstrapper().run(Deno.args);
+  } catch (error) {
+    console.error(error);
+    Deno.exit(1);
+  }
 })();

tsconfig.json

@@ -4,7 +4,7 @@
     "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
     "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
     "outDir": "./lib" /* Redirect output structure to the directory. */,
-    "rootDir": "./" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
+    "rootDir": "./cli" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,
     "strict": true /* Enable all strict type-checking options. */,
     "noImplicitAny": false /* Re-enable after fixing compatibility */ /* Raise error on expressions and declarations with an implied 'any' type. */,
     "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */