import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import { resolve } from 'path'

// Optimized Vite Configuration
export default defineConfig({
  plugins: [react()],
  resolve: {
    alias: {
      '@': resolve(__dirname, './src'),
    },
  },
  server: {
    port: 3000,
    open: true,
  },
  build: {
    outDir: 'dist',
    sourcemap: true,
    rollupOptions: {
      output: {
        manualChunks: {
          // Core React libraries
          vendor: ['react', 'react-dom'],
          
          // UI and animations
          ui: ['framer-motion', 'lucide-react'],
          
          // AI and ML libraries (largest chunk)
          ai: ['@tensorflow/tfjs', 'natural', 'ml-matrix', 'compromise'],
          
          // Real-time and networking
          realtime: ['socket.io-client', 'ws', 'ioredis', 'redis'],
          
          // Queue management
          queue: ['bull', 'uuid'],
          
          // Date utilities
          utils: ['date-fns']
        },
        // Optimize chunk sizes
        chunkFileNames: (chunkInfo) => {
          const facadeModuleId = chunkInfo.facadeModuleId
            ? chunkInfo.facadeModuleId.split('/').pop()
            : 'chunk'
          return `js/${facadeModuleId}-[hash].js`
        }
      },
    },
    // Enable compression
    minify: 'terser',
    terserOptions: {
      compress: {
        drop_console: true,
        drop_debugger: true,
      },
    },
    // Optimize chunks
    chunkSizeWarningLimit: 500,
  },
})