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

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  const apiTarget = env.VITE_API_PROXY_TARGET || 'http://127.0.0.1:8080'

  return {
    base: '/',
    plugins: [vue()],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url))
      }
    },
    build: {
      outDir: 'dist',
      emptyOutDir: true,
      sourcemap: false
    },
    server: {
      port: 5173,
      proxy: {
        '/api': {
          target: apiTarget,
          changeOrigin: true,
          configure: (proxy) => {
            proxy.on('proxyRes', (proxyRes, req) => {
              if (req.url?.includes('/chat/completions')) {
                proxyRes.headers['cache-control'] = 'no-cache'
                proxyRes.headers['x-accel-buffering'] = 'no'
              }
            })
          }
        }
      }
    }
  }
})