import { defineConfig } from "vite";
import react from "@vitejs/plugin-react-swc";
import path from "path";
import { componentTagger } from "lovable-tagger";
import { visualizer } from 'rollup-plugin-visualizer';

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  server: {
    host: "::",
    port: 8080,
  },
  plugins: [
    react(),
    mode === 'development' &&
    componentTagger(),
    mode === 'production' &&
    visualizer({
      filename: 'dist/bundle-analysis.html',
      open: false,
      gzipSize: true,
      brotliSize: true,
    }),
  ].filter(Boolean),
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
    },
  },
  build: {
    rollupOptions: {
      output: {
        manualChunks: {
          // Vendor chunk for React ecosystem
          'vendor-react': ['react', 'react-dom', 'react-router-dom'],

          // UI library chunks (large Radix UI components)
          'vendor-ui-core': [
            '@radix-ui/react-dialog',
            '@radix-ui/react-dropdown-menu',
            '@radix-ui/react-popover',
            '@radix-ui/react-select',
            '@radix-ui/react-tabs',
            '@radix-ui/react-toast',
            '@radix-ui/react-tooltip',
          ],
          'vendor-ui-forms': [
            '@radix-ui/react-checkbox',
            '@radix-ui/react-radio-group',
            '@radix-ui/react-slider',
            '@radix-ui/react-switch',
            '@radix-ui/react-label',
            'react-hook-form',
            '@hookform/resolvers',
            'zod',
          ],
          'vendor-ui-layout': [
            '@radix-ui/react-accordion',
            '@radix-ui/react-collapsible',
            '@radix-ui/react-navigation-menu',
            '@radix-ui/react-scroll-area',
            '@radix-ui/react-separator',
            '@radix-ui/react-aspect-ratio',
          ],
          'vendor-ui-misc': [
            '@radix-ui/react-alert-dialog',
            '@radix-ui/react-avatar',
            '@radix-ui/react-context-menu',
            '@radix-ui/react-hover-card',
            '@radix-ui/react-menubar',
            '@radix-ui/react-progress',
            '@radix-ui/react-slot',
            '@radix-ui/react-toggle',
            '@radix-ui/react-toggle-group',
          ],

          // Data & State management
          'vendor-data': [
            '@tanstack/react-query',
            '@supabase/supabase-js',
          ],

          // Utilities & Styling
          'vendor-utils': [
            'clsx',
            'class-variance-authority',
            'tailwind-merge',
            'tailwindcss-animate',
            'cmdk',
          ],

          // Internationalization
          'vendor-i18n': [
            'i18next',
            'i18next-browser-languagedetector',
            'react-i18next',
          ],

          // Charts & Data Visualization
          'vendor-charts': [
            'recharts',
            'date-fns',
          ],

          // UI Enhancements
          'vendor-ui-enhanced': [
            'lucide-react',
            'next-themes',
            'sonner',
            'vaul',
            'embla-carousel-react',
            'react-day-picker',
            'react-resizable-panels',
            'input-otp',
          ],
        },
        // Optimize chunk loading
        chunkFileNames: (chunkInfo) => {
          const facadeModuleId = chunkInfo.facadeModuleId
            ? chunkInfo.facadeModuleId.split('/').pop().replace('.tsx', '').replace('.ts', '')
            : 'chunk'
          return `assets/${facadeModuleId}-[hash].js`
        },
      },
    },
    // Increase chunk size warning limit slightly to account for necessary chunks
    chunkSizeWarningLimit: 600,
    // Enable minification optimizations
    minify: 'terser',
    terserOptions: {
      compress: {
        drop_console: mode === 'production',
        drop_debugger: mode === 'production',
      },
    },
  },
}));