// -- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
// ++

var webpack = require('webpack');
var fs = require('fs');
var path = require('path');
var _ = require('lodash');
var pathConfig = require('./rails-plugins.conf');

var TypeScriptDiscruptorPlugin = require('./webpack/typescript-disruptor.plugin.js');
var ExtractTextPlugin = require('extract-text-webpack-plugin');

var pluginEntries = _.reduce(pathConfig.pluginNamesPaths, function (entries, path, name) {
  entries[name.replace(/^openproject\-/, '')] = name;
  return entries;
}, {});

var pluginAliases = _.reduce(pathConfig.pluginNamesPaths, function (entries, pluginPath, name) {
  entries[name] = path.basename(pluginPath);
  return entries;
}, {});

/** Extract available locales from openproject-translations plugin */
var translations = path.resolve(pathConfig.allPluginNamesPaths['openproject-translations'], 'config', 'locales');
var localeIds = ['en'];
fs.readdirSync(translations).forEach(function (file) {
  var matches = file.match( /^js-(.+)\.yml$/);
  if (matches && matches.length > 1) {
    localeIds.push(matches[1]);
  }
});

var browsersListConfig = fs.readFileSync(path.join(__dirname, '..', 'browserslist'), 'utf8');
var browsersList = JSON.stringify(_.filter(browsersListConfig.split('\n'), function (entry) {
  return entry && entry.charAt(0) !== '#';
}));

var loaders = [
  {test: /\.ts$/, loader: 'ng-annotate!ts-loader'},
  {test: /[\/]angular\.js$/, loader: 'exports?angular'},
  {test: /[\/]jquery\.js$/, loader: 'expose?jQuery'},
  {test: /[\/]dragula\.js$/, loader: 'expose?dragula'},
  {test: /[\/]moment\.js$/, loader: 'expose?moment'},
  {test: /[\/]mousetrap\.js$/, loader: 'expose?Mousetrap'},
  {
    test: /\.css$/,
    loader: ExtractTextPlugin.extract(
        'style-loader',
        'css-loader!autoprefixer-loader?{browsers:' + browsersList + ',cascade:false}'
    )
  },
  {test: /\.png$/, loader: 'url-loader?limit=100000&mimetype=image/png'},
  {test: /\.gif$/, loader: 'file-loader'},
  {test: /\.jpg$/, loader: 'file-loader'},
  {test: /[\/].*\.js$/, loader: 'ng-annotate?map=true'}
];

for (var k in pathConfig.pluginNamesPaths) {
  if (pathConfig.pluginNamesPaths.hasOwnProperty(k)) {
    loaders.push({
      test: new RegExp('templates/plugin-' + k.replace(/^openproject\-/, '') + '/.*\.html$'),
      loader: 'ngtemplate?module=openproject.templates&relativeTo=' +
      path.join(pathConfig.pluginNamesPaths[k], 'frontend', 'app') + '!html'
    });
  }
}

loaders.push({
  test: /^((?!templates\/plugin).)*\.html$/,
  loader: 'ngtemplate?module=openproject.templates&relativeTo=' +
  path.resolve(__dirname, './app') + '!html'
});


function getWebpackMainConfig() {
  return {
    context: path.join(__dirname, '/app'),

    entry: _.merge({
      'global': './global.js',
      'core-app': './openproject-app.js'
    }, pluginEntries),

    output: {
      filename: 'openproject-[name].js',
      path: path.join(__dirname, '..', 'app', 'assets', 'javascripts', 'bundles'),
      publicPath: '/assets/bundles/'
    },

    module: {
      loaders: loaders,
      // Prevent 'This seems to be a pre-built javascript file.' error due to crossvent dist
      noParse: /node_modules\/crossvent/
    },

    resolve: {
      root: __dirname,

      extensions: ['', '.webpack.js', '.ts', '.js'],

      modulesDirectories: [
        'node_modules',
        'bower_components',
        'vendor'
      ].concat(pathConfig.pluginDirectories),

      fallback: [path.join(__dirname, 'bower_components')],

      alias: _.merge({
        'locales': './../../config/locales',
        'core-components': path.resolve(__dirname, 'app', 'components'),

        'angular-truncate': 'angular-truncate/src/truncate',
        'angular-context-menu': 'angular-context-menu/dist/angular-context-menu.js',
        'mousetrap': 'mousetrap/mousetrap.js',
        'ngFileUpload': 'ng-file-upload/ng-file-upload'
      }, pluginAliases)
    },

    resolveLoader: {
      root: path.join(__dirname, '/node_modules')
    },

    ts: {
      configFileName: path.resolve(__dirname, 'tsconfig.json')
    },

    externals: {
      "I18n": "I18n"
    },

    plugins: [
      // Add a simple fail plugin to return a status code of 2 if
      // errors are detected (this includes TS warnings)
      // It is ONLY executed when `ENV[CI]` is set or `--bail` is used.
      TypeScriptDiscruptorPlugin,

      // Extract CSS into its own bundle
      new ExtractTextPlugin('openproject-[name].css'),

      // Global variables provided in all entries
      // We should avoid this since it reduces webpack
      // strengths to discover dependency use.
      new webpack.ProvidePlugin({
        '_': 'lodash'
      }),

      // Restrict loaded ngLocale locales to the ones we load from translations
      new webpack.ContextReplacementPlugin(
        /(angular-i18n)/,
        new RegExp('angular-locale_(' + localeIds.join('|') + ')\.js$', 'i')
      ),

      // Resolve bower dependencies
      new webpack.ResolverPlugin([
        new webpack.ResolverPlugin.DirectoryDescriptionFilePlugin(
            'bower.json', ['main'])
      ])
    ]
  };
}

module.exports = getWebpackMainConfig;