import { loadEnv } from 'vite'
import { resolve } from 'path'
import type { UserConfig, ConfigEnv } from 'vite'
import createVitePlugins from './src/plugins'
import wrapperEnv from './src/common/utils/env'

function pathResolve(dir: string) {
  return resolve(__dirname, '.', dir)
}

// https://vitejs.dev/config/
export default ({ command, mode }: ConfigEnv): UserConfig => {
  const root = process.cwd()
  const env = loadEnv(mode, root)
  const isBuild = command === 'build'

  // loadEnv 中返回的是 string 类型的（即使是 boolean），下面的方法可以返回正确的类型
  const viteEnv = wrapperEnv(env)
  const { VITE_PORT, VITE_PUBLIC_PATH, VITE_OPEN_BROWSER, VITE_CORS } = viteEnv

  return {
    plugins: createVitePlugins(viteEnv, isBuild),
    resolve: {
      alias: {
        '@': pathResolve('src') // 设置 @ 指向 src
      }
    },
    base: VITE_PUBLIC_PATH, // 设置打包路径
    server: {
      port: VITE_PORT,
      open: VITE_OPEN_BROWSER,
      cors: VITE_CORS

      /**
       * 设置代理（解决前端跨域问题）
       * /api -> https://xxx.xxx.com
       * ^/API -> /
       * /api/aa/bb -> https://xxx.xxx.com/aa/bb
       * /api/API/aa/bb -> https://xxx.xxx.com/aa/bb
       */
      // proxy: {
      //   '/api': {
      //     target: 'https://xxx.xxx.com',
      //     changeOrigin: true,
      //     secure: true,
      //     rewrite: (path) => path.replace('^/API', '/')
      //   }
      // }
    },
    optimizeDeps: {
      exclude: ['@yireen/squoosh-browser']
    },
    css: {
      postcss: {
        plugins: [
          {
            postcssPlugin: 'internal:charset-removal',
            AtRule: {
              charset: (atRule) => {
                if (atRule.name === 'charset') {
                  atRule.remove()
                }
              }
            }
          }
        ]
      }
    }
  }
}