import { defineConfig, loadEnv } from 'vite'
import react from '@vitejs/plugin-react'

export default defineConfig(({ mode }) => {
  // 读取 frontend/.env* 与进程环境（start.sh 会注入根目录 .env）
  const env = loadEnv(mode, process.cwd(), '')
  const apiTarget = env.VITE_API_PROXY_TARGET || 'http://localhost:18080'
  const port = Number(env.PORT || env.FRONTEND_PORT || 15173)

  return {
    plugins: [react()],
    server: {
      port,
      proxy: {
        // 只代理真实后端 API，避免 /api-debug 这类前端路由刷新时被误转发到后端。
        '^/api(/|$)': {
          target: apiTarget,
          changeOrigin: true,
        },
        '/uploads': {
          target: apiTarget,
          changeOrigin: true,
        },
        '/health': {
          target: apiTarget,
          changeOrigin: true,
        },
      },
    },
  }
})