import Uni from '@dcloudio/vite-plugin-uni'
import dayjs from 'dayjs'
import path from 'node:path'
import { defineConfig, loadEnv } from 'vite'
import fs from 'node:fs'
import { generateComponentTypes } from './vite-plugins/generateComponentTypes'
console.log('进入 vite')
// @see https://uni-helper.js.org/vite-plugin-uni-pages
import UniPages from '@uni-helper/vite-plugin-uni-pages'
// @see https://uni-helper.js.org/vite-plugin-uni-layouts
import UniLayouts from '@uni-helper/vite-plugin-uni-layouts'
// @see https://github.com/uni-helper/vite-plugin-uni-platform
// 需要与 @uni-helper/vite-plugin-uni-pages 插件一起使用
import UniPlatform from '@uni-helper/vite-plugin-uni-platform'
// @see https://github.com/uni-helper/vite-plugin-uni-manifest
import UniManifest from '@uni-helper/vite-plugin-uni-manifest'
// @see https://unocss.dev/
import { visualizer } from 'rollup-plugin-visualizer'
import UnoCSS from 'unocss/vite'
import AutoImport from 'unplugin-auto-import/vite'
import ViteRestart from 'vite-plugin-restart'
import { copyNativeRes } from './vite-plugins/copyNativeRes'
import { viteMockServe } from 'vite-plugin-mock'

// https://vitejs.dev/config/
export default ({ command, mode }) => {
  // console.log(mode === process.env.NODE_ENV) // true

  // mode: 区分生产环境还是开发环境
  console.log('command, mode -> ', command, mode)
  // pnpm dev:h5 时得到 => serve development
  // pnpm build:h5 时得到 => build production
  // pnpm dev:mp-weixin 时得到 => build development (注意区别,command为build)
  // pnpm build:mp-weixin 时得到 => build production
  // pnpm dev:app 时得到 => build development (注意区别,command为build)
  // pnpm build:app 时得到 => build production
  // dev 和 build 命令可以分别使用 .env.development 和 .env.production 的环境变量

  const { UNI_PLATFORM } = process.env
  console.log('UNI_PLATFORM -> ', UNI_PLATFORM) // 得到 mp-weixin, h5, app 等

  const env = loadEnv(mode, path.resolve(process.cwd(), 'env'))
  const {
    VITE_APP_PORT,
    VITE_SERVER_BASEURL,
    VITE_DELETE_CONSOLE,
    VITE_SHOW_SOURCEMAP,
    VITE_APP_PROXY,
    VITE_APP_PROXY_PREFIX,
    VITE_USE_MOCK,
  } = env
  console.log('环境变量 env -> ', env)
  // 在h5平台把vite环境变量提取出来替换成window上的属性
  const define = UNI_PLATFORM === 'h5' && mode === 'production' ? createDynamicDefine(env) : {}
  return defineConfig({
    envDir: './env', // 自定义env目录

    plugins: [
      generateComponentTypes(),
      UniPages({
        exclude: ['**/components/**/**.*'],
        routeBlockLang: 'json5', // 虽然设了默认值,但是vue文件还是要加上 lang="json5", 这样才能很好地格式化
        // homePage 通过 vue 文件的 route-block 的type="home"来设定
        // pages 目录为 src/pages,分包目录不能配置在pages目录下
        subPackages: [
          'src/pages-home',
          'src/pages-message',
          'src/pages-user',
          'src/pages-work',
          'src/pages-sub',
        ], // 是个数组,可以配置多个,但是不能为pages里面的目录
        dts: 'src/types/uni-pages.d.ts',
      }),
      UniLayouts(),
      UniPlatform(),
      UniManifest(),
      // UniXXX 需要在 Uni 之前引入
      Uni(),
      {
        // 临时解决 dcloudio 官方的 @dcloudio/uni-mp-compiler 出现的编译 BUG
        // 参考 github issue: https://github.com/dcloudio/uni-app/issues/4952
        // 自定义插件禁用 vite:vue 插件的 devToolsEnabled,强制编译 vue 模板时 inline 为 true
        name: 'fix-vite-plugin-vue',
        configResolved(config) {
          const plugin = config.plugins.find((p) => p.name === 'vite:vue')
          if (plugin && plugin.api && plugin.api.options) {
            plugin.api.options.devToolsEnabled = false
          }
        },
      },
      UnoCSS(),
      AutoImport({
        imports: ['vue', 'uni-app'],
        dts: 'src/types/auto-import.d.ts',
        dirs: ['src/hooks'], // 自动导入 hooks
        eslintrc: { enabled: true },
        vueTemplate: true, // default false
      }),

      ViteRestart({
        // 通过这个插件,在修改vite.config.js文件则不需要重新运行也生效配置
        restart: ['vite.config.js'],
      }),
      // h5环境增加 BUILD_TIME 和 BUILD_BRANCH
      UNI_PLATFORM === 'h5' && {
        name: 'html-transform',
        transformIndexHtml(html) {
          return html.replace('%BUILD_TIME%', dayjs().format('YYYY-MM-DD HH:mm:ss'))
        },
      },
      // 打包分析插件,h5 + 生产环境才弹出
      UNI_PLATFORM === 'h5' &&
        mode === 'production' &&
        visualizer({
          filename: './node_modules/.cache/visualizer/stats.html',
          open: true,
          gzipSize: true,
          brotliSize: true,
        }),
      // 只有在 app 平台时才启用 copyNativeRes 插件
      UNI_PLATFORM === 'app' && copyNativeRes(),
      viteMockServe({
        // 指定 mock 文件目录
        mockPath: './mock',
        // 开发服务器才启用mock数据
        enable: mode === 'development' && JSON.parse(VITE_USE_MOCK),
      }),
      UNI_PLATFORM === 'h5' && mode === 'production' && createEnvConfigPlugin(),
    ],
    define: {
      __UNI_PLATFORM__: JSON.stringify(UNI_PLATFORM),
      __VITE_APP_PROXY__: JSON.stringify(VITE_APP_PROXY),
      ...define,
    },
    css: {
      postcss: {
        plugins: [
          // autoprefixer({
          //   // 指定目标浏览器
          //   overrideBrowserslist: ['> 1%', 'last 2 versions'],
          // }),
        ],
      },
    },

    resolve: {
      alias: {
        '@': path.join(process.cwd(), './src'),
        '@img': path.join(process.cwd(), './src/static/images'),
      },
    },
    server: {
      host: '0.0.0.0',
      hmr: true,
      port: Number.parseInt(VITE_APP_PORT, 10),
      // 仅 H5 端生效,其他端不生效(其他端走build,不走devServer)
      proxy: JSON.parse(VITE_APP_PROXY)
        ? {
            [VITE_APP_PROXY_PREFIX]: {
              target: VITE_SERVER_BASEURL,
              changeOrigin: true,
              rewrite: (path) => path.replace(new RegExp(`^${VITE_APP_PROXY_PREFIX}`), ''),
            },
          }
        : undefined,
    },
    build: {
      // 方便非h5端调试
      sourcemap: VITE_SHOW_SOURCEMAP === 'true', // 默认是false
      target: 'es6',
      // 开发环境不用压缩
      minify: mode === 'development' ? false : 'terser',
      terserOptions: {
        compress: {
          drop_console: VITE_DELETE_CONSOLE === 'true',
          drop_debugger: true,
        },
      },
    },
  })
}
// 环境变量映射到window上的属性
function createDynamicDefine(envVars) {
  return Object.keys(envVars).reduce((acc, key) => {
    if (key.startsWith('VITE_')) {
      acc[`import.meta.env.${key}`] = `window.__APP_CONFIG__.${key}`
    }
    return acc
  }, {})
}
function createEnvConfigPlugin() {
  let mode = 'production'
  let envDir = process.cwd()

  return {
    name: 'dynamic-env',
    config(config, { mode: configMode }) {
      mode = configMode || 'production'
      envDir = config.envDir || envDir
    },
    async writeBundle(options) {
      const env = loadEnv(mode, path.resolve(process.cwd(), 'env'))
      delete env['VITE_ROOT_DIR']
      // 生成动态配置文件
      const configContent = `window.__APP_CONFIG__ = ${JSON.stringify(env)};`
      const outputDir = options.dir || path.resolve(envDir, 'dist')
      const configPath = path.join(outputDir, 'app.config.js')
      // 写入配置文件
      fs.writeFileSync(configPath, configContent, 'utf-8')
      // 修改 index.html 注入脚本
      const indexPath = path.join(outputDir, 'index.html')
      if (fs.existsSync(indexPath)) {
        let html = fs.readFileSync(indexPath, 'utf-8')
        // update-begin-author:liaozhiyang date:2025-05-27 for:【issues/87】h5打包部署后,Oauth2认证后无法正确引入app.config.js文件
        let prefix = '/'
        if (env.VITE_APP_PUBLIC_BASE) {
          prefix = env.VITE_APP_PUBLIC_BASE
        }
        if (prefix.endsWith('/')) {
          prefix = prefix.slice(0, -1)
        }
        const scriptTag = `<script src="${prefix}/app.config.js"></script>`
        // update-end-author:liaozhiyang date:2025-05-27 for:【issues/87】h5打包部署后,Oauth2认证后无法正确引入app.config.js文件
        if (!html.includes('app.config.js')) {
          html = html.replace('</title>', `</title> \n ${scriptTag}`)
          fs.writeFileSync(indexPath, html, 'utf-8')
        }
      }
    },
  }
}