const path = require('path')
const terserPlugin = require('terser-webpack-plugin')

module.exports = {
    publicPath: '/',
    productionSourceMap: false,
    devServer: {
        disableHostCheck: true,
        open: true,
        port: 8888,
        // 开发环境默认开启反向代理，如果不需要请自行注释
        proxy: {
            '/tduck-api': {
                target: 'http://localhost:8999',
                changeOrigin: true
            }
        }
    },
    configureWebpack: config => {
        config.resolve.modules = ['node_modules']
        config.resolve.alias = {
            '@': path.resolve(__dirname, 'src')
        }
        config.optimization = {
            minimizer: [
                //https://webpack.docschina.org/plugins/terser-webpack-plugin/
                new terserPlugin({
                    terserOptions: {
                        compress: {
                            warnings: false,
                            drop_console: true,
                            drop_debugger: true,
                            pure_funcs: ['console.log']
                        }
                    }
                })
            ]
        }
    },
    chainWebpack: config => {
        const oneOfsMap = config.module.rule('scss').oneOfs.store
        oneOfsMap.forEach(item => {
            item.use('sass-resources-loader')
                .loader('sass-resources-loader')
                .options({
                    resources: [
                        './src/assets/styles/resources/*.scss',
                    ]
                })
                .end()
        })
        config.module
            .rule('svg')
            .exclude.add(path.join(__dirname, 'src/assets/icons'))
            .end()
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(path.join(__dirname, 'src/assets/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end()
        config.plugin('html')
            .tap(args => {
                args[0].title = process.env.VUE_APP_TITLE
                args[0].debugTool = process.env.VUE_APP_DEBUG_TOOL
                return args
            })
            .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
                }
              }
            })
          }
        )
    }
}