const webpack = require("webpack");
const ejs = require("ejs");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CopyPlugin = require("copy-webpack-plugin");
const ExtensionReloader = require("webpack-extension-reloader");
const { VueLoaderPlugin } = require("vue-loader");
const { version } = require("./package.json");

const config = {
  mode: process.env.NODE_ENV,
  context: __dirname + "/src",
  entry: {
    background: "./background.js",
    "popup/popup": "./popup/popup.js"
  },
  output: {
    path: __dirname + "/dist",
    filename: "[name].js"
  },
  resolve: {
    extensions: [".js", ".vue"]
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: "vue-loader"
      },
      {
        test: /\.js$/,
        loader: "babel-loader",
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"]
      },
      {
        test: /\.scss$/,
        use: [MiniCssExtractPlugin.loader, "css-loader", "sass-loader"]
      },
      {
        test: /\.sass$/,
        use: [
          MiniCssExtractPlugin.loader,
          "css-loader",
          "sass-loader?indentedSyntax"
        ]
      },
      {
        test: /\.(png|jpg|jpeg|gif|svg|ico)$/,
        loader: "file-loader",
        options: {
          name: "[path][name].[ext]",
          outputPath: "/images/",
          emitFile: true,
          esModule: false
        }
      },
      {
        test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
        loader: "file-loader",
        options: {
          name: "[path][name].[ext]",
          outputPath: "/fonts/",
          emitFile: true,
          esModule: false
        }
      }
    ]
  },
  plugins: [
    new webpack.DefinePlugin({
      global: "window"
    }),
    new VueLoaderPlugin(),
    new MiniCssExtractPlugin({
      filename: "[name].css"
    }),
    new CopyPlugin([
      { from: "icons", to: "icons", ignore: ["icon.xcf"] },
      { from: "images", to: "images" },
      {
        from: "popup/popup.html",
        to: "popup/popup.html",
        transform: transformHtml
      },
      {
        from: "manifest.json",
        to: "manifest.json",
        transform: content => {
          const jsonContent = JSON.parse(content);
          jsonContent.version = version;

          if (config.mode === "development") {
            jsonContent["content_security_policy"] =
              "script-src 'self' 'unsafe-eval'; object-src 'self'";
          }

          return JSON.stringify(jsonContent, null, 2);
        }
      }
    ])
  ]
};

if (config.mode === "production") {
  config.plugins = (config.plugins || []).concat([
    new webpack.DefinePlugin({
      "process.env": {
        NODE_ENV: '"production"'
      }
    })
  ]);
}

if (process.env.HMR === "true") {
  config.plugins = (config.plugins || []).concat([
    new ExtensionReloader({
      manifest: __dirname + "/src/manifest.json"
    })
  ]);
}

function transformHtml(content) {
  return ejs.render(content.toString(), {
    ...process.env
  });
}

module.exports = config;