const path = require('path')
const webpack = require('webpack')
const HtmlPlugin = require('html-webpack-plugin')
const CopyPlugin = require('copy-webpack-plugin')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin

const momentLocales = /en/
const outputPath = path.resolve(__dirname, './dist')

module.exports = {
  entry: './src/main.js',
  output: {
    path: outputPath,
    publicPath: '/',
    filename: 'build.js',
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
            // Since sass-loader (weirdly) has SCSS as its default parse mode, we map
            // the "scss" and "sass" values for the lang attribute to the right configs here.
            // other preprocessors should work out of the box, no loader config like this nessessary.
            'scss': 'vue-style-loader!css-loader!sass-loader',
            'sass': 'vue-style-loader!css-loader!sass-loader?indentedSyntax',
          },
          // other vue-loader options go here
        },
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]',
        },
      },
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader',
      },
      {
        test: /\.(graphql|gql)$/,
        exclude: /node_modules/,
        loader: 'graphql-tag/loader',
      },
    ],
  },
  resolve: {
    modules: ['src', 'node_modules'],
    extensions: ['.js', '.json', '.vue'],
    /* alias: {
      'vue$': 'vue/dist/vue.common.js'
    } */
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true,
  },
  performance: {
    hints: false,
  },
  devtool: '#eval-source-map',
  plugins: [
    new HtmlPlugin({
      template: 'src/index.html',
    }),
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify(process.env.NODE_ENV),
        GRAPHQL_URL: JSON.stringify(process.env.GRAPHQL_URL || 'https://vue-curated-api.now.sh/graphql'),
      },
    }),
    new webpack.ContextReplacementPlugin(/moment[/\\]locale$/, momentLocales),
  ],
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        warnings: false,
      },
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true,
    }),
    new CopyPlugin([
      {
        from: path.resolve(__dirname, './public'),
        to: outputPath,
      },
    ]),
  ])
}

if (process.env.ANALYZE === 'on') {
  module.exports.plugins = (module.exports.plugins || []).concat([
    new BundleAnalyzerPlugin(),
  ])
}