import { fileURLToPath, URL } from 'node:url'
import { defineConfig, loadEnv } from 'vite'
import vue from '@vitejs/plugin-vue'
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const proxyTarget = process.env.API_PROXY_TARGET || env.API_PROXY_TARGET || 'http://localhost:9000'

  // 静态资源基址:CI 构建时注入 VITE_CDN_BASE(= CDN 域名 + 版本路径,如
  // https://<cdn-domain>/<version>/dist/),使打包出的 index.html 中 JS/CSS
  // 引用变为 CDN 绝对 URL,实现「nginx 发 index 外壳、静态走 CDN」。
  // 未注入时回退到 '/'(本地 dev 与无 CDN 兜底,行为与原来一致)。
  const cdnBase = process.env.VITE_CDN_BASE || env.VITE_CDN_BASE || '/'

  return {
    base: cdnBase,
    plugins: [
      vue(),
      AutoImport({
        resolvers: [ElementPlusResolver()],
        dts: 'src/auto-imports.d.ts',
      }),
      Components({
        resolvers: [
          name => name === 'ElSelect' ? {
            name: 'AdminSelect',
            from: '@/shared/components/AdminSelect',
            sideEffects: 'element-plus/es/components/select/style/css',
          } : undefined,
          ElementPlusResolver(),
        ],
        dts: 'src/components.d.ts',
      }),
    ],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url)),
      },
    },
    server: {
      strictPort: true,
      proxy: {
        '/api': {
          target: proxyTarget,
          changeOrigin: true,
          configure(proxy) {
            proxy.on('proxyReq', (proxyRequest) => {
              proxyRequest.removeHeader('origin')
            })
          },
        },
      },
    },
  }
})