import { defineConfig } 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'
import { VitePWA } from 'vite-plugin-pwa'
import { visualizer } from 'rollup-plugin-visualizer'
import viteCompression from 'vite-plugin-compression'
import VueI18nPlugin from '@intlify/unplugin-vue-i18n/vite'

// https://vitejs.dev/config/
export default defineConfig(({ mode, command }) => {
  const isProduction = mode === 'production'
  const isAnalyze = mode === 'analyze'

  return {
    base: isProduction ? '/emotion-museum/' : '/',
  plugins: [
    vue(),
    
    // 自动导入
    AutoImport({
      imports: [
        'vue',
        'vue-router',
        'pinia',
        '@vueuse/core',
        {
          'vue-i18n': ['useI18n']
        }
      ],
      resolvers: [ElementPlusResolver()],
      dts: true,
      eslintrc: {
        enabled: true
      }
    }),
    
    // 组件自动导入
    Components({
      resolvers: [ElementPlusResolver()],
      dts: true
    }),
    
    // PWA支持
    VitePWA({
      registerType: 'autoUpdate',
      includeAssets: ['favicon.ico', 'apple-touch-icon.png'],
      manifest: {
        name: '情绪博物馆',
        short_name: '情绪博物馆',
        description: '记录情绪，分享心情的温暖空间',
        theme_color: '#4A90E2',
        background_color: '#ffffff',
        display: 'standalone',
        icons: [
          {
            src: 'pwa-192x192.png',
            sizes: '192x192',
            type: 'image/png'
          },
          {
            src: 'pwa-512x512.png',
            sizes: '512x512',
            type: 'image/png'
          }
        ]
      },
      workbox: {
        globPatterns: ['**/*.{js,css,html,ico,png,svg}']
      }
    }),
    
    // 国际化支持
    VueI18nPlugin({
      include: resolve(__dirname, './src/i18n/locales/**')
    }),
    
    // Gzip压缩（仅生产环境）
    isProduction && viteCompression({
      verbose: true,
      disable: false,
      threshold: 10240,
      algorithm: 'gzip',
      ext: '.gz'
    }),

    // 构建分析（仅分析模式）
    isAnalyze && visualizer({
      filename: 'dist/stats.html',
      open: true,
      gzipSize: true,
      brotliSize: true
    })
  ].filter(Boolean),
  
  resolve: {
    alias: {
      '@': resolve(__dirname, 'src'),
      '~': resolve(__dirname, 'src')
    }
  },
  
  define: {
    global: 'globalThis',
    __VUE_I18N_FULL_INSTALL__: true,
    __VUE_I18N_LEGACY_API__: false,
    __INTLIFY_PROD_DEVTOOLS__: false
  },
  
  server: {
    port: 5173,
    open: true,
    proxy: {
      '/api': {
        target: 'http://localhost:19089',
        changeOrigin: true,
        secure: false
      },
      '/ws': {
        target: 'ws://localhost:19089',
        ws: true,
        changeOrigin: true
      }
    }
  },
  
  build: {
    outDir: 'dist',
    sourcemap: !isProduction,
    minify: isProduction ? 'terser' : false,
    terserOptions: isProduction ? {
      compress: {
        drop_console: true,
        drop_debugger: true,
        pure_funcs: ['console.log', 'console.info', 'console.debug']
      },
      mangle: {
        safari10: true
      }
    } : {},
    rollupOptions: {
      external: (id) => {
        if (id.includes('echarts') && id.includes('extension')) {
          return true
        }
        return false
      },
      output: {
        chunkFileNames: 'js/[name]-[hash].js',
        entryFileNames: 'js/[name]-[hash].js',
        assetFileNames: (assetInfo) => {
          const fileName = assetInfo.name || 'asset'
          const info = fileName.split('.')
          const ext = info[info.length - 1]
          if (/\.(mp4|webm|ogg|mp3|wav|flac|aac)$/.test(fileName)) {
            return `media/[name]-[hash].${ext}`
          }
          if (/\.(png|jpe?g|gif|svg|webp|ico)$/.test(fileName)) {
            return `images/[name]-[hash].${ext}`
          }
          if (/\.(woff2?|eot|ttf|otf)$/.test(fileName)) {
            return `fonts/[name]-[hash].${ext}`
          }
          return `assets/[name]-[hash].${ext}`
        },
        manualChunks: (id) => {
          // 第三方库分包
          if (id.includes('node_modules')) {
            if (id.includes('vue') || id.includes('pinia') || id.includes('vue-router')) {
              return 'vue-vendor'
            }
            if (id.includes('element-plus')) {
              return 'element-plus'
            }
            if (id.includes('echarts')) {
              return 'echarts'
            }
            if (id.includes('lodash') || id.includes('dayjs') || id.includes('axios')) {
              return 'utils'
            }
            return 'vendor'
          }

          // 业务模块分包
          if (id.includes('/src/views/')) {
            const pathSegments = id.split('/src/views/')[1].split('/')
            if (pathSegments.length > 1) {
              return `pages-${pathSegments[0]}`
            }
          }

          if (id.includes('/src/components/')) {
            return 'components'
          }
        }
      }
    },

    // 构建性能优化
    chunkSizeWarningLimit: 1000,
    reportCompressedSize: !isProduction,

    // 目标浏览器
    target: ['es2015', 'chrome63', 'firefox67', 'safari12']
  },
  
  optimizeDeps: {
    include: [
      'vue',
      'vue-router',
      'pinia',
      'element-plus',
      'echarts',
      'vue-echarts',
      '@vueuse/core',
      'dayjs',
      'lodash-es'
    ]
  }
  }
})