'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
const env = ['develop', undefined].includes(process.env.BUILD_ENV) ? require('./config/dev.env') : require('./config/prod.env')

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

const name = defaultSettings.title || '管理后台' // page title

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  // lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: process.env.BUILD_ENV === 'develop',
  devServer: {
    port: 8080,
    open: true,
    host: '0.0.0.0',
    overlay: {
      warnings: false,
      errors: true
    },
    // before: require('./mock/mock-server.js')
    proxy: {
      '/api/auth': {
        target: 'http://shining-admin.codedreamit.com',
        changeOrigin: true,
        pathRewrite: {
          '^/api/auth': '/api/auth'
        }
      },
      '/api/admin': {
        target: 'http://shining-admin.codedreamit.com',
        changeOrigin: true,
        pathRewrite: {
          '^/api/admin': '/api/admin'
        }
      },
      '/api/upload': {
        target: 'http://shining-admin.codedreamit.com',
        changeOrigin: true,
        pathRewrite: {
          '^/api/upload': '/api/upload'
        }
      },
      '/api/system': {
        target: 'http://shining-admin.codedreamit.com',
        changeOrigin: true,
        pathRewrite: {
          '^/api/system': '/api/system'
        }
      },
      '/api/shop': {
        target: 'https://shining.codedreamit.com',
        changeOrigin: true,
        pathRewrite: {
          '^/api/shop': '/api/shop'
        }
      }
    }
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  css: {
    loaderOptions: {
      sass: {
        prependData: `@import "@/styles/var.scss";`
      }
    }
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ])

    config.plugin('define').tap(args => {
      args[0]['process.env'] = Object.assign({}, args[0]['process.env'], env)
      return args
    })

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          // config
          //   .plugin('ScriptExtHtmlWebpackPlugin')
          //   .after('html')
          //   .use('script-ext-html-webpack-plugin', [{
          //     // `runtime` must same as runtimeChunk name. default is `runtime`
          //     inline: /runtime\..*\.js$/
          //   }])
          //   .end()
          config
            .optimization.splitChunks({
            chunks: 'all',
            cacheGroups: {
              libs: {
                name: 'chunk-libs',
                test: /[\\/]node_modules[\\/]/,
                priority: 10,
                chunks: 'initial' // only package third parties that are initially dependent
              },
              elementUI: {
                name: 'chunk-elementUI', // split elementUI into a single package
                priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
              },
              commons: {
                name: 'chunk-commons',
                test: resolve('src/components'), // can customize your rules
                minChunks: 3, //  minimum common number
                priority: 5,
                reuseExistingChunk: true
              }
            }
          })
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single')
        }
      )
  }
}