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

const DEFAULT_PROXY_TARGET = 'https://192.168.3.233'

/** Vite `base`：与 `VITE_BASE_URL` 对齐，供 `import.meta.env.BASE_URL` 与 Vue Router 使用 */
function resolveViteBase(raw: string | undefined): string {
  const trimmed = (raw ?? '/').trim()
  if (!trimmed || trimmed === '/') return '/'
  const withLeading = trimmed.startsWith('/') ? trimmed : `/${trimmed}`
  return withLeading.endsWith('/') ? withLeading : `${withLeading}/`
}

// https://vite.dev/config/
export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const proxyTarget = (env.VITE_API_PROXY_TARGET || DEFAULT_PROXY_TARGET).trim().replace(/\/+$/, '')
  const base = resolveViteBase(env.VITE_BASE_URL)

  return {
    base,
    plugins: [
      vue(),
      AutoImport({
        resolvers: [ElementPlusResolver()],
        dts: 'src/types/auto-imports.d.ts',
      }),
      Components({
        resolvers: [ElementPlusResolver({ importStyle: 'sass' })],
        dts: 'src/types/components.d.ts',
      }),
    ],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url)),
      },
    },
    server: {
      host: true,
      port: 5173,
      open: true,
      allowedHosts: true,
      proxy: {
        // '/base': {
        //   target: proxyTarget,
        //   changeOrigin: true,
        //   secure: false,
        // },
        // '/trade': {
        //   target: proxyTarget,
        //   changeOrigin: true,
        //   secure: false,
        // },
        // '/product': {
        //   target: proxyTarget,
        //   changeOrigin: true,
        //   secure: false,
        // },
        '/api': {
          target: proxyTarget,
          changeOrigin: true,
          secure: false,
        },
      },
    },
    preview: {
      host: true,
      port: 5173,
      allowedHosts: true,
    },
    css: {
      preprocessorOptions: {
        scss: {
          additionalData: `@use "@/styles/mixins/respond" as *;\n`,
        },
      },
    },
  }
})