adgile/tasks/task-build.js

An easy-to-use automated front-end setup.

'use strict'

/**
 * A module for running the `adg build` task
 * @module task.build
 */

let     settings    = require('../settings.default');
const   chalk       = require('chalk'),
        _           = require('lodash'),
        fs          = require('fs-extra'),
        ProgressBar = require('progress'),
        gulp        = require('gulp');

/**
 * Run the build task in response to Gulp
 * Load the config.json file and parse it as JSON
 * Allow customization of gulp-htmlmin and folder names through the config file
 * Create a progressbar to inform the user of this process (when not in verbose mode)
 * Finally, run all gulp-related tasks in sequence, ending with serving the files if a --serve flag was given
 * @param {*} cb 
 */
function runtask(cb) {
	console.log(chalk.grey('\nLoading config.json...'));

	fs.readFile('config.json', 'utf8', (err, data) => {
		if (err) {
			console.log(chalk.red('✘  Cannot find config.json. Have you initiated Adgile through `adg init`?'));
			process.exit(0);
		}

		try {
			config = JSON.parse(data);
		} catch (err) {
			console.log(chalk.red('✘  The config.json file is not valid json. Aborting.'));
			process.exit(0);
		}

		if (!_.isNull(config.htmlminOptions) && !_.isUndefined(config.htmlminOptions)) {
			settings.htmlminOptions = _.assign(settings.htmlminOptions, config.htmlminOptions);
		}

		// If no assetsFolder is set in config.json, use the fallback from settings.
		settings.assetsFolder = config.assetsFolder || settings.assetsFolder;

		if (!settings.isVerbose) {
			settings.bar = new ProgressBar(chalk.grey('Building ' + (settings.isProduction ? 'production' : 'development') + ' version [:bar] :percent :step.'), {
				complete:   '=',
				incomplete: ' ',
				total: 			7, // Equal to number of gulp tasks in sequence below
				width:      21,
				clear:			true,
				callback: () => { console.log(chalk.grey('Building ' + (settings.isProduction ? 'production' : 'development') + ' version [=====================] 100% Done.\n')); }
			});
		} else {
			console.log(chalk.grey('Building ' + (settings.isProduction ? 'production' : 'development') + ' version...'));
		}

		let nextTasks = gulp.series(['clean:export', 'sass', 'scripts', 'images', 'other', 'templates', 'uncss'], () => {				
			console.log(chalk.green('✔  Build complete'));
			
			if(settings.isServe) {
				gulp.series('server')();
			}

			settings.builtFlag = true;
			cb(null);
		});

		nextTasks();
	});
}

module.exports = {
    runtask
}