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

export default defineConfig(({ mode }) => ({
  plugins: [react()],
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
      '@shared': path.resolve(__dirname, './src/shared'),
      '@components': path.resolve(__dirname, './src/shared/components'),
      '@hooks': path.resolve(__dirname, './src/shared/hooks'),
      '@stores': path.resolve(__dirname, './src/shared/stores'),
      '@utils': path.resolve(__dirname, './src/shared/utils'),
      '@constants': path.resolve(__dirname, './src/shared/constants'),
      '@services': path.resolve(__dirname, './src/services'),
      '@app': path.resolve(__dirname, './src/app'),
      '@features': path.resolve(__dirname, './src/features'),
      '@pages': path.resolve(__dirname, './src/pages'),
    },
  },
  server: {
    port: 3000,
    proxy: {
      '/api': {
        target: 'http://localhost:4000',
        changeOrigin: true,
      },
    },
  },
  build: {
    // Generate source maps for production debugging
    sourcemap: mode === 'development',
    // Chunk splitting for better caching
    rollupOptions: {
      output: {
        manualChunks: {
          // Vendor chunks
          'vendor-react': ['react', 'react-dom', 'react-router-dom'],
          'vendor-ui': ['framer-motion', 'lucide-react', 'recharts'],
          'vendor-forms': ['react-hook-form', '@hookform/resolvers', 'zod'],
          'vendor-state': ['zustand', 'axios'],
          'vendor-utils': ['date-fns', 'clsx', 'tailwind-merge'],
        },
      },
    },
    // Increase chunk size warning limit
    chunkSizeWarningLimit: 500,
  },
}));