Adds template generation logic (#72)

* Adds template generation logic
Adds templates for
1. Api Endpoint Class
2. Slash Command Class
3. Settings

* Fixed settings boilerplate

* Removed hardcoded files from app create and added them to templates folder

* Separated boilerplate functions to different files

src/commands/generate.ts

+import { Command, flags } from '@oclif/command';
+import chalk from 'chalk';
+import cli from 'cli-ux';
+import * as fuzzy from 'fuzzy';
+import * as inquirer from 'inquirer';
+
+import { FolderDetails } from '../misc';
+import { apiEndpointTemplate, appendNewSetting,
+    initialSettingTemplate, slashCommandTemplate } from '../templates/boilerplate';
+
+export default class Generate extends Command {
+    public static description = 'Adds boilerplate code for various functions';
+    public static flags = {
+        help: flags.help({char: 'h'}),
+        options: flags.string({
+            char: 'o',
+            // tslint:disable-next-line:max-line-length
+            description: 'Choose the boilerplate needed a. Api Extension b. Slash Command Extension c. Settings Extension',
+            options: ['a', 'b', 'c'],
+        }),
+    };
+    public async run() {
+        const { flags } = this.parse(Generate);
+        const fd = new FolderDetails(this);
+        try {
+            await fd.readInfoFile();
+        } catch (e) {
+            this.error(chalk.bold.red(e && e.message ? e.message : e));
+        }
+        let option = flags.options;
+        const categories = [
+            'Api Extension',
+            'Slash Command Extension',
+            'Settings Extension',
+        ];
+        if (!option) {
+            inquirer.registerPrompt('checkbox-plus', require('inquirer-checkbox-plus-prompt'));
+            const result = await inquirer.prompt([{
+                type: 'checkbox-plus',
+                name: 'categories',
+                message: 'Choose the boilerplate needed',
+                pageSize: 10,
+                highlight: true,
+                searchable: true,
+                validate: (answer: Array<string>) => {
+                    if (answer.length === 0) {
+                        return chalk.bold.redBright('You must choose at least one option.');
+                    }
+
+                    return true;
+                },
+                // tslint:disable:promise-function-async
+                source: (answersSoFar: object, input: string) => {
+                    input = input || '';
+
+                    return new Promise((resolve) => {
+                        const fuzzyResult = fuzzy.filter(input, categories);
+
+                        const data = fuzzyResult.map((element) => {
+                            return element.original;
+                        });
+
+                        resolve(data);
+                    });
+                },
+            }] as any);
+            option = (result as any).categories[0];
+        }
+        switch (option) {
+            case 'Api Extension':
+                this.ApiExtensionBoilerplate(fd);
+                break;
+            case 'Slash Command Extension':
+                this.SlashCommandExtension(fd);
+                break;
+            case 'Settings Extension':
+                this.SettingExtension(fd);
+                break;
+            default:
+                break;
+        }
+
+    }
+
+    private ApiExtensionBoilerplate = async (fd: FolderDetails): Promise<void> => {
+        const name = await cli.prompt(chalk.bold.greenBright('Name of endpoint class'));
+        const path = await cli.prompt(chalk.bold.greenBright('Path for endpoint'));
+        const toWrite = apiEndpointTemplate(name, path);
+        fd.generateEndpointClass(name, toWrite);
+    }
+
+    private SlashCommandExtension = async (fd: FolderDetails): Promise<void> => {
+        const  name = await cli.prompt(chalk.bold.greenBright('Name of command class'));
+        const toWrite = slashCommandTemplate(name);
+        fd.generateCommandClass(name, toWrite);
+    }
+
+    private SettingExtension = async (fd: FolderDetails): Promise<void> => {
+        let data = '';
+        if (await fd.doesFileExist('settings.ts')) {
+            data = fd.readSettingsFile();
+        }
+        if (data === '') {
+            data = initialSettingTemplate();
+        }
+        data = appendNewSetting(data);
+        fd.writeToSettingsFile(data);
+    }
+}

src/misc/appCreator.ts

@@ -3,6 +3,8 @@ import { exec } from 'child_process';
 import * as fs from 'fs';
 import pascalCase = require('pascal-case');
 
+import { editorConfigTemplate, gitIgnoreTemplate, mainTemplate, packageJsonTemplate,
+     readmeTemplate, tsConfigTemplate, tsLintConfigTemplate, vsCodeExtsTemplate } from '../templates/app/index';
 import { FolderDetails } from './folderDetails';
 
 export class AppCreator {
@@ -54,21 +56,7 @@ export class AppCreator {
     }
 
     private createMainTypeScriptFile(): void {
-        const toWrite =
-`import {
-    IAppAccessors,
-    ILogger,
-} from '@rocket.chat/apps-engine/definition/accessors';
-import { App } from '@rocket.chat/apps-engine/definition/App';
-import { IAppInfo } from '@rocket.chat/apps-engine/definition/metadata';
-
-export class ${ pascalCase(this.fd.info.name) }App extends App {
-    constructor(info: IAppInfo, logger: ILogger, accessors: IAppAccessors) {
-        super(info, logger, accessors);
-    }
-}
-`;
-
+        const toWrite = mainTemplate(pascalCase(this.fd.info.name));
         fs.writeFileSync(this.fd.mergeWithFolder(this.fd.info.classFile), toWrite, 'utf8');
     }
 
@@ -81,167 +69,37 @@ export class ${ pascalCase(this.fd.info.name) }App extends App {
 
     // tslint:disable:max-line-length
     private createdReadme(): void {
-        const toWrite =
-`# ${ this.fd.info.name }
-${ this.fd.info.description }
-
-## Getting Started
-Now that you have generated a blank default Rocket.Chat App, what are you supposed to do next?
-Start developing! Open up your favorite editor, our recommended one is Visual Studio code,
-and start working on your App. Once you have something ready to test, you can either
-package it up and manually deploy it to your test instance or you can use the CLI to do so.
-Here are some commands to get started:
-- \`rc-apps package\`: this command will generate a packaged app file (zip) which can be installed **if** it compiles with TypeScript
-- \`rc-apps deploy\`: this will do what \`package\` does but will then ask you for your server url, username, and password to deploy it for you
-
-## Documentation
-Here are some links to examples and documentation:
-- [Rocket.Chat Apps TypeScript Definitions Documentation](https://rocketchat.github.io/Rocket.Chat.Apps-engine/)
-- [Rocket.Chat Apps TypeScript Definitions Repository](https://github.com/RocketChat/Rocket.Chat.Apps-engine)
-- [Example Rocket.Chat Apps](https://github.com/graywolf336/RocketChatApps)
-- Community Forums
-  - [App Requests](https://forums.rocket.chat/c/rocket-chat-apps/requests)
-  - [App Guides](https://forums.rocket.chat/c/rocket-chat-apps/guides)
-  - [Top View of Both Categories](https://forums.rocket.chat/c/rocket-chat-apps)
-- [#rocketchat-apps on Open.Rocket.Chat](https://open.rocket.chat/channel/rocketchat-apps)
-`;
-
+        const toWrite = readmeTemplate(this.fd.info.name, this.fd.info.description);
         fs.writeFileSync('README.md', toWrite, 'utf8');
     }
 
     private createTsConfig(): void {
-        const toWrite =
-`{
-    "compilerOptions": {
-      "target": "es2017",
-      "module": "commonjs",
-      "moduleResolution": "node",
-      "declaration": false,
-      "noImplicitAny": false,
-      "removeComments": true,
-      "strictNullChecks": true,
-      "noImplicitReturns": true,
-      "emitDecoratorMetadata": true,
-      "experimentalDecorators": true,
-    },
-    "include": [
-      "**/*.ts"
-    ]
-  }
-`;
-
+        const toWrite = tsConfigTemplate();
         fs.writeFileSync(this.fd.mergeWithFolder('tsconfig.json'), toWrite, 'utf8');
     }
 
     private createTsLintConfig(): void {
-        const toWrite =
-`{
-    "extends": "tslint:recommended",
-    "rules": {
-      "array-type": [true, "generic"],
-      "member-access": true,
-      "no-console": [false],
-      "no-duplicate-variable": true,
-      "object-literal-sort-keys": false,
-      "quotemark": [true, "single"],
-      "max-line-length": [true, {
-          "limit": 160,
-          "ignore-pattern": "^import | *export .*? {"
-      }]
-    }
-  }
-`;
-
+        const toWrite = tsLintConfigTemplate();
         fs.writeFileSync(this.fd.mergeWithFolder('tslint.json'), toWrite, 'utf8');
     }
 
     private createPackageJson(): void {
-        const toWrite =
-`{
-    "devDependencies": {
-        "@rocket.chat/apps-engine": "^1.12.0",
-        "@types/node": "^10.12.14",
-        "tslint": "^5.10.0",
-        "typescript": "^2.9.1"
-    }
-}
-`;
-
+        const toWrite = packageJsonTemplate();
         fs.writeFileSync(this.fd.mergeWithFolder('package.json'), toWrite, 'utf8');
     }
 
     private createGitIgnore(): void {
-        const toWrite =
-`# ignore modules pulled in from npm
-node_modules/
-
-# rc-apps package output
-dist/
-
-# JetBrains IDEs
-out/
-.idea/
-.idea_modules/
-
-# macOS
-.DS_Store
-.AppleDouble
-.LSOverride
-._*
-.DocumentRevisions-V100
-.fseventsd
-.Spotlight-V100
-.TemporaryItems
-.Trashes
-.VolumeIcon.icns
-.com.apple.timemachine.donotpresent
-.AppleDB
-.AppleDesktop
-Network Trash Folder
-Temporary Items
-.apdisk
-`;
-
+        const toWrite = gitIgnoreTemplate();
         fs.writeFileSync(this.fd.mergeWithFolder('.gitignore'), toWrite, 'utf8');
     }
 
     private createEditorConfig(): void {
-        const toWrite =
-`# EditorConfig is awesome: http://EditorConfig.org
-
-# top-most EditorConfig file
-root = true
-
-# Unix-style newlines with a newline ending every file
-[*]
-indent_style = space
-indent_size = 4
-charset = utf-8
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
-
-[*.md]
-trim_trailing_whitespace = false
-`;
-
+        const toWrite = editorConfigTemplate();
         fs.writeFileSync(this.fd.mergeWithFolder('.editorconfig'), toWrite, 'utf8');
     }
 
     private createVsCodeExts(): void {
-        const toWrite =
-`{
-    "recommendations": [
-        "EditorConfig.editorconfig",
-        "eamodio.gitlens",
-        "eg2.vscode-npm-script",
-        "wayou.vscode-todo-highlight",
-        "minhthai.vscode-todo-parser",
-        "ms-vscode.vscode-typescript-tslint-plugin",
-        "rbbit.typescript-hero"
-    ]
-}`;
-
+        const toWrite = vsCodeExtsTemplate();
         fs.mkdirSync(this.fd.mergeWithFolder('.vscode'));
         fs.writeFileSync(this.fd.mergeWithFolder('.vscode/extensions.json'), toWrite, 'utf8');
     }

src/misc/folderDetails.ts

@@ -40,6 +40,34 @@ export class FolderDetails {
         this.info = appInfo;
     }
 
+    public generateDirectory(dirName: string): void {
+        const dirPath = path.join(this.folder, dirName);
+        if (!fs.existsSync(dirPath)) {
+            fs.mkdirSync(dirPath);
+        }
+    }
+
+    public generateEndpointClass(name: string, toWrite: string): void {
+        const dir = 'endpoints';
+        const dirPath = path.join(this.folder, dir);
+        this.generateDirectory(dir);
+        fs.writeFileSync(path.join(dirPath, `${name}.ts`), toWrite, 'utf8');
+    }
+
+    public generateCommandClass(name: string, toWrite: string): void {
+        const dir = 'slashCommands';
+        const dirPath = path.join(this.folder, dir);
+        this.generateDirectory(dir);
+        fs.writeFileSync(path.join(dirPath, `${name}.ts`), toWrite, 'utf8');
+    }
+
+    public readSettingsFile(): string {
+        return fs.readFileSync(path.join(this.folder, 'settings.ts'), 'utf-8');
+    }
+
+    public writeToSettingsFile(toWrite: string): void {
+        fs.writeFileSync(path.join(this.folder, 'settings.ts'), toWrite, 'utf-8');
+    }
     /**
      * Validates the "app.json" file, loads it, and then retrieves the classFile property from it.
      * Throws an error when something isn't right.

src/templates/app/editorConfigTemplate.ts

+export const editorConfigTemplate = (): string => {
+    return `# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+indent_style = space
+indent_size = 4
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+`;
+};

src/templates/app/gitIgnoreTemplate.ts

+export const gitIgnoreTemplate = (): string => {
+    return `# ignore modules pulled in from npm
+node_modules/
+
+# rc-apps package output
+dist/
+
+# JetBrains IDEs
+out/
+.idea/
+.idea_modules/
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+._*
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+`;
+};

src/templates/app/index.ts

+import { editorConfigTemplate } from './editorConfigTemplate';
+import { gitIgnoreTemplate } from './gitIgnoreTemplate';
+import { mainTemplate } from './mainTemplate';
+import { packageJsonTemplate } from './packageJsonTemplate';
+import { readmeTemplate } from './readmeTemplate';
+import { tsConfigTemplate } from './tsConfigTemplate';
+import { tsLintConfigTemplate } from './tsLintConfigTemplate';
+import { vsCodeExtsTemplate } from './vsCodeExtsTemplate';
+
+export {
+    mainTemplate,
+    readmeTemplate,
+    tsConfigTemplate,
+    tsLintConfigTemplate,
+    packageJsonTemplate,
+    gitIgnoreTemplate,
+    editorConfigTemplate,
+    vsCodeExtsTemplate,
+};

src/templates/app/mainTemplate.ts

+export const mainTemplate = (appName: string): string => {
+return `import {
+    IAppAccessors,
+    ILogger,
+} from '@rocket.chat/apps-engine/definition/accessors';
+import { App } from '@rocket.chat/apps-engine/definition/App';
+import { IAppInfo } from '@rocket.chat/apps-engine/definition/metadata';
+
+export class ${ appName }App extends App {
+    constructor(info: IAppInfo, logger: ILogger, accessors: IAppAccessors) {
+        super(info, logger, accessors);
+    }
+}
+`;
+};

src/templates/app/packageJsonTemplate.ts

+export const packageJsonTemplate = (): string => {
+    return `{
+    "devDependencies": {
+        "@rocket.chat/apps-engine": "^1.12.0",
+        "@types/node": "^10.12.14",
+        "tslint": "^5.10.0",
+        "typescript": "^2.9.1"
+    }
+}`;
+};

src/templates/app/readmeTemplate.ts

+export const readmeTemplate = (name: string, description: string): string => {
+    return `# ${ name }
+${ description }
+
+## Getting Started
+Now that you have generated a blank default Rocket.Chat App, what are you supposed to do next?
+Start developing! Open up your favorite editor, our recommended one is Visual Studio code,
+and start working on your App. Once you have something ready to test, you can either
+package it up and manually deploy it to your test instance or you can use the CLI to do so.
+Here are some commands to get started:
+- \`rc-apps package\`: this command will generate a packaged app file (zip) which can be installed **if** it compiles with TypeScript
+- \`rc-apps deploy\`: this will do what \`package\` does but will then ask you for your server url, username, and password to deploy it for you
+
+## Documentation
+Here are some links to examples and documentation:
+- [Rocket.Chat Apps TypeScript Definitions Documentation](https://rocketchat.github.io/Rocket.Chat.Apps-engine/)
+- [Rocket.Chat Apps TypeScript Definitions Repository](https://github.com/RocketChat/Rocket.Chat.Apps-engine)
+- [Example Rocket.Chat Apps](https://github.com/graywolf336/RocketChatApps)
+- Community Forums
+  - [App Requests](https://forums.rocket.chat/c/rocket-chat-apps/requests)
+  - [App Guides](https://forums.rocket.chat/c/rocket-chat-apps/guides)
+  - [Top View of Both Categories](https://forums.rocket.chat/c/rocket-chat-apps)
+- [#rocketchat-apps on Open.Rocket.Chat](https://open.rocket.chat/channel/rocketchat-apps)
+`;
+};

src/templates/app/tsConfigTemplate.ts

+export const tsConfigTemplate = (): string => {
+    return `{
+"compilerOptions": {
+    "target": "es2017",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "declaration": false,
+    "noImplicitAny": false,
+    "removeComments": true,
+    "strictNullChecks": true,
+    "noImplicitReturns": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    },
+"include": [
+    "**/*.ts"
+    ]
+}
+`;
+};

src/templates/app/tsLintConfigTemplate.ts

+export const tsLintConfigTemplate = (): string => {
+return `{
+    "extends": "tslint:recommended",
+    "rules": {
+      "array-type": [true, "generic"],
+      "member-access": true,
+      "no-console": [false],
+      "no-duplicate-variable": true,
+      "object-literal-sort-keys": false,
+      "quotemark": [true, "single"],
+      "max-line-length": [true, {
+          "limit": 160,
+          "ignore-pattern": "^import | *export .*? {"
+      }]
+    }
+}
+`;
+};

src/templates/app/vsCodeExtsTemplate.ts

+export const vsCodeExtsTemplate = (): string => {
+    return ` {
+    "recommendations": [
+        "EditorConfig.editorconfig",
+        "eamodio.gitlens",
+        "eg2.vscode-npm-script",
+        "wayou.vscode-todo-highlight",
+        "minhthai.vscode-todo-parser",
+        "ms-vscode.vscode-typescript-tslint-plugin",
+        "rbbit.typescript-hero"
+    ]
+}
+`;
+};

src/templates/boilerplate/apiEndpoint.ts

+import pascalCase = require('pascal-case');
+
+export const apiEndpointTemplate = (endpointClassName: string, path: string): string => {
+return `
+import { IHttp, IModify, IPersistence, IRead } from '@rocket.chat/apps-engine/definition/accessors';
+import { ApiEndpoint, IApiEndpointInfo, IApiRequest, IApiResponse } from '@rocket.chat/apps-engine/definition/api';
+
+export class ${pascalCase(endpointClassName)} extends ApiEndpoint {
+    public path = '${path}';
+    public example = [];
+
+  public async get(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+                   http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+
+  public async head(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+                    http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+
+  public async options(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+                       http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+
+  public async patch(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+                     http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+
+  public post(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+              http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+
+  public put(request: IApiRequest, endpoint: IApiEndpointInfo, read: IRead, modify: IModify,
+             http: IHttp, persis: IPersistence): Promise<IApiResponse> {
+    throw new Error('Method not implemented');
+  }
+}
+`;
+};

src/templates/boilerplate/index.ts

+import { apiEndpointTemplate } from './apiEndpoint';
+import { appendNewSetting, initialSettingTemplate } from './setting';
+import { slashCommandTemplate } from './slashCommand';
+
+export {
+    apiEndpointTemplate,
+    appendNewSetting,
+    initialSettingTemplate,
+    slashCommandTemplate,
+};

src/templates/boilerplate/setting.ts

+
+export const initialSettingTemplate = (): string => {
+    return `
+import { ISetting, SettingType } from '@rocket.chat/apps-engine/definition/settings';
+export const settings: Array<ISetting> = [
+];
+`;
+};
+
+export const appendNewSetting = (data: string): string => {
+    const toWrite = `
+{
+    id: '',
+    type: SettingType.STRING,
+    packageValue: '',
+    required: false,
+    public: false,
+    i18nLabel: '',
+    i18nDescription: '',
+},
+`;
+    const index = data.lastIndexOf('];');
+    return data.slice(0, index) + toWrite + data.slice