import { fileURLToPath, URL } from 'node:url'

import { defineConfig, loadEnv } from 'vite'
import vue from '@vitejs/plugin-vue'
import vueDevTools from 'vite-plugin-vue-devtools'
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'

// https://vite.dev/config/
export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd())

  return {
    base: './',
    plugins: [
      vue(),
      vueDevTools(),
      AutoImport({
        imports: ['vue', 'vue-router', 'pinia'],
        resolvers: [ElementPlusResolver({ importStyle: false })],
        dts: 'src/types/auto-imports.d.ts',
        eslintrc: { enabled: true }
      }),
      Components({
        resolvers: [ElementPlusResolver({ importStyle: false })],
        dts: 'src/types/components.d.ts'
      })
    ],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url))
      }
    },
    server: {
      host: '0.0.0.0',
      port: 5174,
      open: true,
      cors: true,
      proxy: {
        // /api → 后端
        '/api': {
          target: env.VITE_API_BASE_URL || 'http://localhost:8080',
          changeOrigin: true
        },
        // 上传文件访问
        '/uploads': {
          target: env.VITE_API_BASE_URL || 'http://localhost:8080',
          changeOrigin: true
        },
        // WebSocket 代理（客服模块用，握手阶段会带 /ws 前缀）
        '/ws': {
          target: env.VITE_API_BASE_URL || 'http://localhost:8080',
          changeOrigin: true,
          ws: true
        }
      }
    },
    build: {
      target: 'es2020',
      outDir: 'dist',
      assetsDir: 'static',
      sourcemap: false,
      minify: false,
      chunkSizeWarningLimit: 1500,
      rollupOptions: {
        output: {
          manualChunks: (id: string) => {
            if (id.includes('node_modules')) {
              if (id.includes('vue') || id.includes('vue-router') || id.includes('pinia')) return 'vue'
              if (id.includes('element-plus') || id.includes('@element-plus/icons-vue')) return 'element'
            }
          }
        }
      }
    }
  }
})