import { fileURLToPath } from 'url'
import { defineConfig, loadEnv } from 'vite'
import vue from '@vitejs/plugin-vue'

// Vite 配置
export default defineConfig(({ mode }) => {
  // 加载环境变量
  const env = loadEnv(mode, process.cwd(), '')

  return {
    plugins: [vue()],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url))
      }
    },
    server: {
      port: 5173,
      proxy: {
        '/api': {
          // 本地开发模式：VITE_SERVER_URL 为空或本地地址时使用代理
          target: env.VITE_SERVER_URL || `http://localhost:${env.VITE_API_PORT || '3000'}`,
          changeOrigin: true,
          // 仅远程部署时改变 origin
          configure: (proxy) => {
            if (env.VITE_SERVER_URL && !env.VITE_SERVER_URL.includes('localhost')) {
              proxy.on('proxyReq', (proxyReq) => {
                proxyReq.setHeader('origin', env.VITE_SERVER_URL)
              })
            }
          }
        }
      }
    }
  }
})