// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity 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 3 of the License, or
// (at your option) any later version.

// Parity 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 Parity.  If not, see <http://www.gnu.org/licenses/>.

const path = require('path');
// const ReactIntlAggregatePlugin = require('react-intl-aggregate-webpack-plugin');
const WebpackErrorNotificationPlugin = require('webpack-error-notification');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ServiceWorkerWebpackPlugin = require('serviceworker-webpack-plugin');

const rulesEs6 = require('./rules/es6');
const rulesParity = require('./rules/parity');
const Shared = require('./shared');

const DAPPS_BUILTIN = require('@parity/shared/config/dappsBuiltin.json');
const DAPPS_VIEWS = require('@parity/shared/config/dappsViews.json').map((dapp) => {
  dapp.commons = true;
  return dapp;
});

const FAVICON = path.resolve(__dirname, '../node_modules/@parity/shared/assets/images/parity-logo-black-no-text.png');

const DEST = process.env.BUILD_DEST || '.build';
const ENV = process.env.NODE_ENV || 'development';
const EMBED = process.env.EMBED;

const isProd = ENV === 'production';
const isEmbed = EMBED === '1' || EMBED === 'true';

const entry = isEmbed
  ? {
    embed: './embed.js'
  }
  : Object.assign({}, Shared.dappsEntry, {
    index: './index.js'
  });

module.exports = Object.keys(entry).map((entryName) => {
  const entrySrc = entry[entryName];

  return {
    cache: !isProd,
    devtool: isProd ? '#hidden-source-map' : '#source-map',

    context: path.join(__dirname, '../src'),
    entry: {
      [entryName]: entrySrc
    },
    output: {
      path: path.join(__dirname, '../', DEST),
      filename: '[name].js'
    },

    module: {
      rules: [
        rulesParity,
        rulesEs6,
        {
          test: /\.js$/,
          exclude: /(node_modules)/,
          use: [ 'babel-loader' ]
        },
        {
          test: /\.json$/,
          use: [ 'json-loader' ]
        },
        {
          test: /\.ejs$/,
          use: [ 'ejs-loader' ]
        },
        {
          test: /\.html$/,
          use: [
            {
              loader: 'file-loader',
              options: {
                name: '[name].[ext]'
              }
            },
            'extract-loader',
            {
              loader: 'html-loader',
              options: {
                root: path.resolve(__dirname, '../assets/images'),
                attrs: ['img:src', 'link:href']
              }
            }
          ]
        },
        {
          test: /\.md$/,
          use: [ 'html-loader', 'markdown-loader' ]
        },
        {
          test: /\.css$/,
          include: /node_modules\/(?!@parity)*/,
          use: [ 'style-loader', 'css-loader' ]
        },
        {
          test: /\.css$/,
          exclude: /node_modules\/(?!@parity)*/,
          use: [
            'style-loader',
            {
              loader: 'css-loader',
              options: {
                importLoaders: 1,
                localIdentName: '[name]_[local]_[hash:base64:10]',
                minimize: true,
                modules: true
              }
            },
            {
              loader: 'postcss-loader',
              options: {
                plugins: (loader) => [
                  require('postcss-import'),
                  require('postcss-nested'),
                  require('postcss-simple-vars')
                ]
              }
            }
          ]
        },
        {
          test: /\.(png|jpg)$/,
          use: [ {
            loader: 'file-loader',
            options: {
              name: 'assets/[name].[hash].[ext]'
            }
          } ]
        },
        {
          test: /\.(woff|woff2|ttf|eot|otf)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
          use: [ {
            loader: 'file-loader',
            options: {
              name: 'fonts/[name][hash].[ext]'
            }
          } ]
        },
        {
          test: /parity-logo-white-no-text\.svg/,
          use: [ 'url-loader' ]
        },
        {
          test: /\.svg(\?v=[0-9]\.[0-9]\.[0-9])?$/,
          exclude: [ /parity-logo-white-no-text\.svg/ ],
          use: [ {
            loader: 'file-loader',
            options: {
              name: 'assets/[name].[hash].[ext]'
            }
          } ]
        }
      ],
      noParse: [
        /node_modules\/sinon/
      ]
    },

    resolve: {
      alias: {
        '~': path.resolve(__dirname, '..'),
        '@parity/abi': path.resolve(__dirname, '../node_modules/@parity/abi'),
        '@parity/api': path.resolve(__dirname, '../node_modules/@parity/api'),
        '@parity/etherscan': path.resolve(__dirname, '../node_modules/@parity/etherscan'),
        '@parity/jsonrpc': path.resolve(__dirname, '../node_modules/@parity/jsonrpc'),
        '@parity/parity.js': path.resolve(__dirname, '../node_modules/@parity/parity.js'),
        '@parity/shared': path.resolve(__dirname, '../node_modules/@parity/shared'),
        '@parity/ui': path.resolve(__dirname, '../node_modules/@parity/ui'),
        '@parity/wordlist': path.resolve(__dirname, '../node_modules/@parity/wordlist'),
        '@parity': path.resolve(__dirname, '../packages')
      },
      modules: [
        path.join(__dirname, '../node_modules')
      ],
      extensions: ['.json', '.js', '.jsx'],
      unsafeCache: true
    },

    node: {
      fs: 'empty'
    },

    plugins: (function () {
      const DappsHTMLInjection = []
        .concat(DAPPS_BUILTIN, DAPPS_VIEWS)
        .filter((dapp) => !dapp.skipBuild)
        .map((dapp) => {
          return new HtmlWebpackPlugin({
            title: dapp.name,
            filename: dapp.url + '.html',
            template: '../packages/dapps/index.ejs',
            favicon: FAVICON,
            secure: dapp.secure,
            chunks: [ dapp.url ]
          });
        });

      let plugins = Shared.getPlugins().concat(
        new WebpackErrorNotificationPlugin()
      );

      if (!isEmbed) {
        plugins = [].concat(
          plugins,

          new HtmlWebpackPlugin({
            title: 'Parity',
            filename: 'index.html',
            template: './index.ejs',
            favicon: FAVICON,
            chunks: [ 'index' ]
          }),

          new ServiceWorkerWebpackPlugin({
            entry: path.join(__dirname, '../src/serviceWorker.js')
          }),

          DappsHTMLInjection,

          new CopyWebpackPlugin([
            { from: './error_pages.css', to: 'styles.css' },
            { from: '../packages/dapps/static' }
          ], {})
        );
      }

      if (isEmbed) {
        plugins.push(
          new HtmlWebpackPlugin({
            title: 'Parity Bar',
            filename: 'embed.html',
            template: './index.ejs',
            favicon: FAVICON,
            chunks: [ 'embed' ]
          })
        );
      }

      // if (!isAnalize && !isProd) {
      //   const DEST_I18N = path.join(__dirname, '..', DEST, 'i18n');
      //
      //   plugins.push(
      //     new ReactIntlAggregatePlugin({
      //       messagesPattern: DEST_I18N + '/i18n/**/*.json',
      //       aggregateOutputDir: DEST_I18N + '/i18n/',
      //       aggregateFilename: 'en'
      //     })
      //   );
      // }

      return plugins;
    }())
  };
});