'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const HtmlWebpackPlugin = require('html-webpack-plugin')

function resolve(dir) {
  return path.join(__dirname, '..', dir)
}

const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)

const devEnv = require('../config/dev.env')

const devWebpackConfig = merge(baseWebpackConfig, {
  mode: 'development',
  module: {
    rules: utils.styleLoaders({
      sourceMap: config.dev.cssSourceMap,
      usePostCSS: true
    })
  },
  // cheap-module-eval-source-map is faster for development
  devtool: config.dev.devtool,

  // these devServer options should be customized in /config/index.js
  devServer: {
    clientLogLevel: 'warning',
    historyApiFallback: true,
    hot: true,
    compress: true,
    host: HOST || config.dev.host,
    port: PORT || config.dev.port,
    open: config.dev.autoOpenBrowser,
    overlay: config.dev.errorOverlay
      ? { warnings: false, errors: true }
      : false,
    publicPath: devEnv.ASSETS_PUBLIC_PATH,
    proxy: config.dev.proxyTable,
    watchOptions: {
      poll: config.dev.poll
    },
    headers: {
      'content-security-policy': "base-uri 'self'; frame-ancestors 'none'; img-src 'self' data: https: http:; media-src 'self' https:; style-src 'self' 'unsafe-inline'; font-src 'self'; manifest-src 'self'; script-src 'self';"
    }
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': require('../config/dev.env')
    }),
    new webpack.HotModuleReplacementPlugin(),
    // https://github.com/ampedandwired/html-webpack-plugin
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: 'index.html',
      inject: true,
      favicon: resolve('favicon.ico'),
      title: 'Admin FE',
      templateParameters: {
        BASE_URL: devEnv.ASSETS_PUBLIC_PATH + config.dev.assetsSubDirectory,
      },
    }),
  ]
})

module.exports = new Promise((resolve, reject) => {
  resolve(devWebpackConfig)
})