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/*!
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
'use strict';
let gulp, replace, Promise, webpack, webpackProductionConfig,cloneDeep, tap;
let langs = [];
/*
Runs the webpack build.
Will first seach for the resource bundles to see how many languages are supported and then run a build per langauage
*/
function buildWebPackForLanguage(prodConfig, lang) {
return new Promise(function (resolve, reject) {
webpack(prodConfig, function (err, stats) {
console.log('[webpack:build ' + prodConfig.output.filename + ']', stats.toString());
if (err || stats.hasErrors()) {
console.log('webpack:build : Failure!! ' + prodConfig.output.filename + ']');
reject(err || stats.toJson().errors);
}
else {
console.log('webpack:build : Done ' + prodConfig.output.filename + ']');
resolve();
}
});
});
}
/*
// this will check in the src directory which language bundles we have and will
// create the array to that we can run a webpack build per language afterwards
*/
function getSupportedLanguages(options) {
return new Promise((resolve, reject) => {
gulp.src(options.i18nBundles)
.pipe(tap(function(file) {
let languageStartIndex = file.path.lastIndexOf('i18n') + 5;
let languageStr = file.path.indexOf('.json') - languageStartIndex;
let currentLang = file.path.substr(languageStartIndex, languageStr);
console.log('Found bundle ' + file.path + ' for [' + currentLang + ']');
langs[currentLang] = file.path;
}))
.pipe(gulp.dest(options.outDir))
.on('end', function () {
resolve();
})
.on('error', function (e) {
console.log('getLanguages : Failure!!');
reject(e);
});
});
}
/**
* @param options
* @param options.outFileName optional <default build>
*/
function prodTask(options) {
gulp = require('gulp');
replace = require('gulp-replace');
Promise = require('bluebird');
webpack = require('webpack');
cloneDeep = require('lodash/cloneDeep');
tap = require('gulp-tap');
// updating webpack for the production build. no need for sourcemaps in this case.
webpackProductionConfig = require('../../../webpack.production');
// get the languages so that we can bulid per language with the correct bundle
let getLanguages =getSupportedLanguages(options);
// this will run a webpack build per language
return getLanguages.then(() => {
let promises = [];
for (var lang in langs) {
let prodConfig = cloneDeep(webpackProductionConfig);
prodConfig.resolve.alias.i18nJson = langs[lang];
prodConfig.output.filename = (options.outFileName || '[name].js').replace(/.js$/, '_' + lang + '.js');
promises.push(buildWebPackForLanguage(prodConfig, lang));
}
return Promise.all(promises);
});
}
module.exports = prodTask;
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