import { fileURLToPath, URL } from 'node:url'
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import viteCompression from 'vite-plugin-compression'  // gzip 插件

export default defineConfig({
  plugins: [
    vue(),

    // ⬇️ gzip 支持：构建时生成 .gz 文件
    viteCompression({
      verbose: true,
      disable: false,
      threshold: 10240,
      algorithm: 'gzip',
      ext: '.gz',
    }),
  ],

  resolve: {
    alias: {
      '@': fileURLToPath(new URL('./src', import.meta.url)),
    },
  },

  build: {
    target: 'es2015',
    outDir: 'dist',
    assetsDir: 'assets',
    sourcemap: false,
    minify: 'terser',
    terserOptions: {
      compress: {
        drop_console: true,
        drop_debugger: true,
      },
    },
    rollupOptions: {
      output: {
        manualChunks(id) {
          if (id.includes('node_modules')) {
            if (id.includes('element-plus')) {
              return 'element-plus'
            }
            return 'vendor'
          }
        },
      },
    },
  },
})