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

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

const name = defaultSettings.title || "vue Element Admin"; // page title

// /如果你的端口设置为80，
// 使用管理员权限执行命令行。
// 例如Mac: sudo npm run
// 可以通过以下方式修改端口::
// port = 9527 npm run dev OR npm run dev --port = 9527
const port = 9527; // dev port

// 所有配置项说明都可以在 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: "/", // 部署应⽤包时的基本 URL
  outputDir: "private_site", // npm run build ⽣成的⽂件夹，默认是dist
  assetsDir: "static", // 在kaixin⽂件夹下⾯⽣成static⽬录存放js,img,css等静态资源
  productionSourceMap: false,
  lintOnSave: false, // 代码规范
  devServer: {
    port: port,
    open: false,
    overlay: {
      warnings: false,
      errors: true
    },
    before: require("./mock/mock-server.js"),
    proxy: {
      [process.env.VUE_APP_BASE_API]: {
        target: "https://wenjiu-1308881680.cos.ap-shanghai.myqcloud.com", // 后台给的需要跨域请求的接口地址
        ws: true,
        changeOrigin: true, // 请求跨域时，需配置此项
        pathRewrite: {
          // 路径重写,替换target中的请求地址
          ["^" + process.env.VUE_APP_BASE_API]: ""
        }
      }
    }
  },
  configureWebpack: {
    // 在webpack的name字段中提供应用的标题，以便可以在index.html中访问它以注入正确的标题。
    name: name,
    resolve: {
      alias: {
        "@": resolve("src")
      }
    }
  },
  chainWebpack: config => {
    config.module
        .rule('swf')
        .test(/\.swf$/)
        .use('url-loader')
        .loader('url-loader')
        .options({
            limit: 10000
        });
  },
  chainWebpack(config) {
    // 可以提高首屏速度，建议开启预加载
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin("preload").tap(() => [
      {
        rel: "preload",
        // 忽略 runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: "initial"
      }
    ]);

    // 当页面很多时，会导致很多无意义的请求
    config.plugins.delete("prefetch");

    // 设置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");
    });
  }
};