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

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')

  return {
    base: env.VITE_APP_BASE_URL || '/',
    plugins: [
      vue(),
      AutoImport({
        imports: ['vue', 'vue-router', 'pinia', '@vueuse/core'],
        resolvers: [ElementPlusResolver()],
        dts: 'src/types/auto-imports.d.ts',
        eslintrc: { enabled: true, filepath: './.eslintrc-auto-import.json' },
      }),
      Components({
        resolvers: [ElementPlusResolver()],
        dts: 'src/types/components.d.ts',
        dirs: ['src/components'],
      }),
      mockPlugin(env.VITE_USE_MOCK === 'true'),
    ],
    resolve: {
      alias: {
        '@': fileURLToPath(new URL('./src', import.meta.url)),
      },
    },
    css: {
      preprocessorOptions: {
        scss: {
          additionalData: `@use "@/styles/variables.scss" as *;`,
        },
      },
    },
    server: {
      host: true,
      port: Number(env.VITE_APP_PORT) || 3000,
      open: true,
      proxy: {
        // 接口：请求以 /api/... 发起，直接转发到后端（后端以 /api 提供服务，无需重写路径）
        '/api': {
          target: env.VITE_APP_API_URL,
          changeOrigin: true,
        },
        // 文件静态资源由后端 r.Static 提供，dev 下直连后端
        '/files': {
          target: env.VITE_APP_API_URL,
          changeOrigin: true,
        },
      },
    },
    build: {
      chunkSizeWarningLimit: 2000,
      rollupOptions: {
        output: {
          manualChunks: {
            vue: ['vue', 'vue-router', 'pinia'],
            elementPlus: ['element-plus', '@element-plus/icons-vue'],
          },
        },
      },
    },
  }
})