'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

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

const name = defaultSettings.title || '系统后台' // page title


const port = process.env.port || process.env.npm_config_port || 9527 // dev port

module.exports = {
  publicPath: process.env.NODE_ENV === 'production'?'/vue-admin/':'/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave:false /* process.env.NODE_ENV === 'development' */,
  productionSourceMap: false,
  devServer: {
    port: port,
    open: false,
    overlay: {
      warnings: false,
      errors: true
    },
    before: require('./mock/mock-server.js')
  },
  configureWebpack: {
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
   
    config.plugin('preload').tap(() => [{
      rel: 'preload',
    
      fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
      include: 'initial'
    }])

    config.plugins.delete('prefetch')


    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', [{
              
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial'
                },
                elementUI: {
                  name: 'chunk-elementUI',
                  priority: 20, 
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ 
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), 
                  minChunks: 3, 
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          
          config.optimization.runtimeChunk('single')
        }
      )
  }
}