Gruntfile.js

'use strict';

module.exports = function(grunt) {
	let isTravisCi = (process.env.TRAVIS === 'true');

	const jsFiles = [
		// Connectors
		'connectors/**/*.js',
		// Core files
		'*.js', 'core/**/*.js', 'options/*.js', 'popups/*.js',
		// Scripts
		'scripts/*.js',
		// Tests
		'tests/**/*.js'
	];
	const jsonFiles = ['*.json', '.stylelintrc'];
	const htmlFiles = ['options/*.html', 'popups/*.html', 'dialogs/**/*.html'];
	const cssFiles = [
		'options/options.css', 'popups/*.css'
	];

	const extensionSources = [
		'connectors/**', 'core/**', 'icons/**',
		'options/**', 'popups/**', 'vendor/**',
		'manifest.json', 'README.md', 'LICENSE.txt',
		// Skip files
		'!core/content/testReporter.js', '!icons/src/**',
	];
	const buildDir = 'build';
	const packageName = 'web-scrobbler.zip';
	const packageSrcName = 'web-scrobbler-src.zip';

	grunt.initConfig({
		/**
		 * Configs of build tasks.
		 */

		clean: {
			build: buildDir,
			package: [packageName, packageSrcName],
			chrome: [
				`${buildDir}/icons/icon128_firefox.png`,
				`${buildDir}/icons/icon48_firefox.png`
			],
		},
		copy: {
			project_files: {
				expand: true,
				src: extensionSources,
				dest: buildDir,
			},
		},
		compress: {
			main: {
				options: {
					archive: packageName,
					pretty: true
				},
				expand: true,
				cwd: buildDir,
				src: '**/*',
			}
		},
		imagemin: {
			static: {
				options: {
					svgoPlugins: [{
						removeViewBox: false
					}],
				},
				files: [{
					expand: true,
					src: [
						`${buildDir}/icons/*.svg`,
						`${buildDir}/icons/*.png`
					]
				}]
			}
		},
		preprocess: {
			firefox: {
				src: `${buildDir}/**/*.js`,
				expand: true,
				options: {
					inline: true,
					context: {
						FIREFOX: true,
					}
				}
			},
			chrome: {
				src: `${buildDir}/**/*.js`,
				expand: true,
				options: {
					inline: true,
					context: {
						CHROME: true,
					}
				}
			}
		},
		rename: {
			firefox: {
				files: [{
					src: `${buildDir}/icons/icon128_firefox.png`,
					dest: `${buildDir}/icons/icon128.png`
				}, {
					src: `${buildDir}/icons/icon48_firefox.png`,
					dest: `${buildDir}/icons/icon48.png`
				}]
			}
		},
		replace_json: {
			firefox: {
				src: `${buildDir}/manifest.json`,
				changes: {
					'applications.gecko.id': '{799c0914-748b-41df-a25c-22d008f9e83f}',
					'applications.gecko.strict_min_version': '48.0'
				}
			},
		},

		/**
		 * Linter configs.
		 */

		eslint: {
			target: jsFiles,
			options: {
				configFile: '.eslintrc.js',
				fix: !isTravisCi
			},
		},
		jsonlint: {
			src: jsonFiles
		},
		lintspaces: {
			src: [jsFiles, jsonFiles, cssFiles, htmlFiles],
			options: {
				editorconfig: '.editorconfig',
				ignores: ['js-comments']
			}
		},
		stylelint: {
			all: cssFiles
		},

		/**
		 * Configs of other tasks.
		 */

		bump: {
			options: {
				files: ['manifest.json'],
				commit: true,
				commitFiles: ['manifest.json'],
				push: false
			}
		},
		exec: {
			make_add0n_changelog: {
				cmd: 'node scripts/make-add0n-changelog'
			},
			publish_cws: {
				cmd: `node scripts/publish-cws ${packageName}`
			},
			run_tests: {
				cmd: (...args) => `node tests/runner.js ${args.join(' ')}`
			}
		},
		gitarchive: {
			sources: {
				options: {
					format: 'zip',
					treeIsh: 'head',
					output: packageSrcName,
				}
			}
		},
		gitcommit: {
			add0n_changelog: {
				options: {
					message: 'Update changelog on add0n.com'
				},
				files: {
					src: ['.add0n/changelog.json']
				}
			}
		}
	});

	require('load-grunt-tasks')(grunt);

	/**
	 * Some tasks take browser name as an argument.
	 * We support only Chrome and Firefox, which can be specified
	 * as 'chrome' and 'firefox' respectively:
	 *
	 *   Build a package for Chrome browser
	 *   > grunt build:chrome
	 *
	 *   Compile sources for Firefox browser
	 *   > grunt compile:firefox
	 */

	/**
	 * Set the extension icon according to specified browser.
	 * @param {String} browser Browser name
	 */
	grunt.registerTask('icons', (browser) => {
		assertBrowserIsSupported(browser);

		switch (browser) {
			case 'chrome':
				grunt.task.run('clean:chrome');
				break;
			case 'firefox':
				grunt.task.run('rename:firefox');
				break;
		}
	});

	/**
	 * Copy source filed to build directory, preprocess them and
	 * set the extension icon according to specified browser.
	 * @param {String} browser Browser name
	 */
	grunt.registerTask('compile', (browser) => {
		assertBrowserIsSupported(browser);

		grunt.task.run([
			'copy', `preprocess:${browser}`,
			`icons:${browser}`,	'imagemin'
		]);

		if (browser === 'firefox') {
			grunt.task.run('replace_json:firefox');
		}
	});

	/**
	 * Compile source files and package them.
	 */
	grunt.registerTask('build', (browser) => {
		assertBrowserIsSupported(browser);

		grunt.task.run([
			'clean:build', `compile:${browser}`, 'clean:package',
			'compress', 'gitarchive:sources', 'clean:build',
		]);
	});

	/**
	 * Create package and publish it.
	 */
	grunt.registerTask('publish', (browser) => {
		assertBrowserIsSupported(browser);

		switch (browser) {
			case 'chrome':
				grunt.task.run(['build:chrome', 'exec:publish_cws']);
				break;
		}
	});

	/**
	 * Release new version and publish all packages.
	 * @param {String} versionType Version type that 'grunt-bump' supports
	 */
	grunt.registerTask('release', (versionType) => {
		if (!versionType) {
			grunt.fail.fatal('You should specify release type!');
		}

		grunt.task.run([
			`bump:${versionType}`, 'publish:chrome'
		]);
	});

	/**
	 * Generate and commit changelog file for add0n.com website.
	 */
	grunt.registerTask('publish-add0n', [
		'exec:make_add0n_changelog', 'gitcommit:add0n_changelog'
	]);

	/**
	 * Run core or connectors tests.
	 *
	 * You can easily run all test by the following command:
	 *   > grunt test
	 *
	 * To run core tests use 'core' as an argument:
	 *   > grunt test:core
	 *
	 * Note: running core and connectors tests at the same time is not supported.
	 *
	 * You can specify tests you want to run as arguments:
	 *   > grunt test:8tracks
	 *   Run single test for 8tracks connector
	 *
	 *   > grunt test:hypem:dashradio
	 *   Run tests for Hype Machine and Dash Radio connectors
	 *
	 * Also, you can use following options:
	 *   - debug: enable debug mode. Disabled by default.
	 *     Use true|on|1 value to enable and false|off|0 to disable debug mode.
	 *   - quitOnEnd: close browser when all tests are completed. Enabled by default.
	 *     Use true|on|1 value to enable and false|off|0 to disable this feature.
	 *   - skip: skip given tests.
	 *     Tests can be specified as string of tests filenames joined by comma.
	 *
	 * Of course, you can mix both options and tests in arguments:
	 *   > grunt test:8tracks:debug=1
	 */
	grunt.registerTask('test', 'Run tests.', function(...args) {
		grunt.task.run([
			`exec:run_tests:${args.join(':')}`
		]);
	});
	/**
	 * Lint source code using linters specified below.
	 */
	grunt.registerTask('lint', [
		'eslint', 'jsonlint', 'lintspaces', 'stylelint'
	]);
	grunt.registerTask('default', ['lint', 'test:core']);

	/**
	 * Throw an error if the extension doesn't support given browser.
	 * @param  {String}  browser Browser name
	 */
	function assertBrowserIsSupported(browser) {
		const supportedBrowsers = ['chrome', 'firefox'];

		if (!browser) {
			grunt.fail.fatal(
				'You have not specified browser.\n' +
				`Currently supported browsers: ${supportedBrowsers.join(', ')}.`
			);
		}

		if (supportedBrowsers.indexOf(browser) === -1) {
			grunt.fail.fatal(`Unknown browser: ${browser}`);
		}
	}
};