"use strict";
const path = require("path");
const defaultSettings = require("./src/settings.js");
// 代理目标地址（后端服务），例如: http://172.17.0.1:8080
// 启动时可通过环境变量覆盖：VUE_APP_PROXY_TARGET=...
const baseUrl = process.env.VUE_APP_PROXY_TARGET || "http://1.15.17.182:9031";

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

const name = defaultSettings.title || "CMS"; // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following method:
// port = 9527 npm run dev OR npm run dev --port = 9527
// 固定开发服务端口：确保外部可访问 `1.15.17.182:9031`
const port = 9001; // dev port

// 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
   */
  transpileDependencies: [
    "element-ui",
    "vuex",
    "js-cookie",
    "@babel",
    "resize-detector",
  ],
  // 部署到子路径时需要改 publicPath，否则静态资源会从域名根目录 `/static/...` 获取失败
  // 例如部署到 `http://host/car-before/`，则打包时设置 VUE_APP_PUBLIC_PATH=/car-before/
  publicPath: process.env.VUE_APP_PUBLIC_PATH || "/",
  outputDir: "dist",
  assetsDir: "static",
  // 在部分环境下 eslint-loader 会因配置解析失败直接导致构建中断
  // 这里先关闭，确保项目可以正常运行；你后续再补齐 eslint 规则即可。
  lintOnSave: false,
  productionSourceMap: false,
  devServer: {
    // 让外部（例如 172.17.0.1）能访问开发服务
    port: port,
    open: false,
    overlay: {
      warnings: false,
      errors: true,
    },
    // 本地代理：对比 Vite 的 proxy 配置思路，使用 vue-cli 的 proxy
    // 由于本项目接口主要以 /api 开头，这里同时代理 /api 与 /dev-api。
    proxy: {
      // 项目实际请求一般是 /api/...，这里直接转发并保持 /api 前缀不变
      "^/api": {
        target: baseUrl,
        changeOrigin: true,
      },
    },
  },

  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"),
      },
    },
    plugins: [],
  },
  chainWebpack(config) {
    config.entry.app = ["babel-polyfill", "./src/main.js"];
    config.plugins.delete("preload"); // TODO: need test
    config.plugins.delete("prefetch"); // TODO: need test

    // 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();

    // set preserveWhitespace
    config.module
      .rule("vue")
      .use("vue-loader")
      .loader("vue-loader")
      .tap((options) => {
        options.compilerOptions.preserveWhitespace = true;
        return options;
      })
      .end();

    config
      // https://webpack.js.org/configuration/devtool/#development
      .when(process.env.NODE_ENV === "development", (config) =>
        config.devtool("cheap-source-map")
      );

    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,
          },
        },
      });
      config.optimization.runtimeChunk("single");
    });
  },
};