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

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), '')
  
  return {
    plugins: [
      vue(),
      AutoImport({
        imports: ['vue', 'vue-router', 'pinia'],
        resolvers: [ElementPlusResolver()],
        dts: true,
        eslintrc: {
          enabled: true
        }
      }),
      Components({
        resolvers: [ElementPlusResolver()],
        dts: true
      })
    ],
    
    resolve: {
      alias: {
        '@': resolve(__dirname, 'src'),
        '@/components': resolve(__dirname, 'src/components'),
        '@/views': resolve(__dirname, 'src/views'),
        '@/utils': resolve(__dirname, 'src/utils'),
        '@/api': resolve(__dirname, 'src/api'),
        '@/stores': resolve(__dirname, 'src/stores'),
        '@/router': resolve(__dirname, 'src/router'),
        '@/types': resolve(__dirname, 'src/types'),
        '@/assets': resolve(__dirname, 'src/assets')
      }
    },
    
    server: {
      host: '0.0.0.0',
      port: 3000,
      open: true,
      proxy: {
        '/api': {
          target: env.VITE_API_BASE_URL || 'http://localhost:3001',
          changeOrigin: true,
          rewrite: (path) => path.replace(/^\/api/, '')
        }
      }
    },
    
    build: {
      target: 'es2015',
      outDir: 'dist',
      assetsDir: 'assets',
      sourcemap: mode === 'development',
      rollupOptions: {
        output: {
          chunkFileNames: 'js/[name]-[hash].js',
          entryFileNames: 'js/[name]-[hash].js',
          assetFileNames: (assetInfo) => {
            if (assetInfo.name?.endsWith('.css')) {
              return 'css/[name]-[hash].css'
            }
            return 'assets/[name]-[hash].[ext]'
          },
          manualChunks: {
            'vue-vendor': ['vue', 'vue-router', 'pinia'],
            'element-plus': ['element-plus', '@element-plus/icons-vue'],
            'utils': ['axios', 'nprogress']
          }
        }
      },
      terserOptions: {
        compress: {
          drop_console: mode === 'production',
          drop_debugger: mode === 'production'
        }
      }
    },
    
    optimizeDeps: {
      include: ['vue', 'vue-router', 'pinia', 'element-plus', 'axios']
    },
    
    define: {
      __VUE_OPTIONS_API__: false,
      __VUE_PROD_DEVTOOLS__: false
    },
    
    css: {
      preprocessorOptions: {
        scss: {
          additionalData: `@import "@/style/variables.scss"; @import "@/style/mixins.scss";`
        }
      }
    }
  }
})