const path = require('path'),
  fs = require('fs'),
  
  webpack = require('webpack'),
  HtmlWebpackPlugin = require('html-webpack-plugin'),
  CordovaHtmlOutputPlugin = require('./webpack/plugins/CordovaHtmlOutputPlugin.js'),
  UglifyJsPlugin = require('uglifyjs-webpack-plugin'),
  CleanPlugin = require('clean-webpack-plugin'),
  ExtractTextPlugin = require("extract-text-webpack-plugin"),
  
  entryFile = path.join(__dirname, 'src/main.js'),
  devServerPort = 8081

let config = function (env) {
  let returner = {
    entry: entryFile,
    
    resolve: {
      extensions: ['.js', '.json', '.vue'],
      modules: [path.join(__dirname, 'src'), 'node_modules'],
      alias: {
        'vue$': 'vue/dist/vue.common.js',
        'src': path.resolve(__dirname, 'src/'),
        'assets': path.resolve(__dirname, 'src/assets/'),
        'pages': path.resolve(__dirname, 'src/assets/vue/pages/'),
        'components': path.resolve(__dirname, 'src/assets/vue/components/')
      }
    },
    
    output: {
      pathinfo: true,
      devtoolLineToLine: true,
      filename: '[hash].[name].js',
      sourceMapFilename: "[hash].[name].js.map",
      path: path.join(__dirname, 'www')
    },
    
    module: {
      rules: [
        {test: /\.(png|jpe?g|gif)$/, loader: 'file-loader', options: {name: '[name].[ext]?[hash]'}},
        {test: /\.(woff2?|eot|ttf|otf|mp3|wav)(\?.*)?$/, loader: 'file-loader', options: {name: '[name].[ext]?[hash]'}},
        {test: /\.svg$/, loader: 'url-loader'},
        {test: /\.scss$/, loader: [ 'vue-style-loader', 'css-loader', 'sass-loader']},
        {test: /\.sass$/, loader: [ 'vue-style-loader', 'css-loader', 'sass-loader?indentedSyntax']},
        {test: /\.vue$/, loader: 'vue-loader'}
      ]
    },
    
    plugins: [
      new webpack.DefinePlugin({
        'process.env': {
          'NODE_ENV': JSON.stringify((env && typeof env !== "undefined" && env.release) ? 'production' : 'development')
        }
      }),
      new HtmlWebpackPlugin({
        filename: 'index.html',
        template: 'src/index.html',
        inject: true,
        minify: {
          removeComments: true,
          removeScriptTypeAttributes: true,
          removeAttributeQuotes: true,
          useShortDoctype: true,
          decodeEntities: true,
          collapseWhitespace: true,
          minifyCSS: true
        }
      })
    ]
  }
  
  if (typeof env === 'undefined' || typeof env.devserver === 'undefined') {
    returner.plugins.push(new CordovaHtmlOutputPlugin())
    returner.plugins.push(new ExtractTextPlugin("styles.css"))
    returner.module.rules.push({
      test: /\.css$/, use: ExtractTextPlugin.extract({
        fallback: "style-loader",
        use: "css-loader"
      })
    })
  }
  
  if (env) {
    if (typeof env.devserver !== 'undefined' && env.devserver) {
      returner.module.rules.push({
        test: /\.css$/, loader: ['style-loader', 'css-loader']
      })
      returner.entry = [
        entryFile,
        path.resolve(__dirname, "webpack/dev_helpers/CordovaDeviceRouter.js")
      ]
      returner.output.publicPath = "/"
      returner.devtool = "eval"
      returner.devServer = {
        contentBase: path.join(__dirname, "www"),
        port: devServerPort,
        stats: {colors: true},
        watchOptions: {
          aggregateTimeout: 300,
          poll: 1000
        },
        headers: {
          "Access-Control-Allow-Origin": "*"
        },
        host: "0.0.0.0"
      }
      returner.plugins.push(new webpack.NamedModulesPlugin())
    } else if (typeof env.release !== 'undefined' && env.release) {
      returner.plugins.push(new CleanPlugin("www", {
        root: path.join(__dirname, "."),
        dry: false,
        verbose: false,
        exclude: ["index.html"]
      }))
      returner.plugins.push(new UglifyJsPlugin())
    }
  }
  
  return returner
}

module.exports = config