/// <reference types="vitest" />
import { defineConfig, loadEnv, type Plugin } from 'vite'
import react from '@vitejs/plugin-react'
import path from 'path'
import { visualizer } from 'rollup-plugin-visualizer'

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => {
  const isProduction = mode === 'production'
  const projectRoot = path.resolve(__dirname)

  // Load VITE_DOMAIN from .env files (single source of truth for the domain)
  const envVars = loadEnv(mode, projectRoot, 'VITE_')
  const domain = envVars.VITE_DOMAIN || 'veza.fr'
  const backendPort = envVars.VITE_BACKEND_PORT || '18080'
  const chatPort = envVars.VITE_CHAT_PORT || '18081'
  const streamPort = envVars.VITE_STREAM_PORT || '18082'

  return {
    // Ensure dev server and dep scan use apps/web only (avoid picking up storybook-static when run from monorepo root)
    root: projectRoot,
    plugins: [
      react(),
      // Bundle analyzer for production builds
      (isProduction && visualizer({
        filename: 'dist/bundle-analysis.html',
        open: false,
        gzipSize: true,
        brotliSize: true,
      })) as Plugin,
    ].filter(Boolean),
    test: {
      globals: true,
      environment: 'jsdom',
      setupFiles: './src/setupTests.ts',
      css: true,
    },
    resolve: {
      alias: {
        '@': path.resolve(__dirname, './src'),
        '@components': path.resolve(__dirname, './src/components'),
        '@features': path.resolve(__dirname, './src/features'),
        '@services': path.resolve(__dirname, './src/services'),
        '@hooks': path.resolve(__dirname, './src/hooks'),
        '@utils': path.resolve(__dirname, './src/utils'),
        '@types': path.resolve(__dirname, './src/types'),
      },
    },
    server: {
      port: parseInt(process.env.PORT || '5173', 10),
      host: true,
      // Allow dev access via the configured domain (VITE_DOMAIN in .env.local)
      allowedHosts: [domain],
      // Exclude Storybook build output from watch and fs access so dep scan never touches it
      watch: {
        ignored: ['**/storybook-static/**', '**/dist_verification/**'],
      },
      fs: {
        deny: ['**/storybook-static/**', '**/dist_verification/**'],
      },
      // P2.1: Proxy API and Swagger requests to backend in development
      // This eliminates CORS issues in dev by making all requests same-origin
      proxy: {
        '/api': {
          target: `http://${domain}:${backendPort}`,
          changeOrigin: true,
          secure: false,
          ws: true,
        },
        '/swagger': {
          target: `http://${domain}:${backendPort}`,
          changeOrigin: true,
          secure: false,
        },
        '/ws': {
          target: `http://${domain}:${backendPort}`,
          changeOrigin: true,
          ws: true,
          rewrite: (path: string) => path.replace(/^\/ws/, '/api/v1/ws'),
        },
        '/stream': {
          target: `http://${domain}:${streamPort}`,
          changeOrigin: true,
          ws: true,
        },
        '/hls': {
          target: `http://${domain}:${streamPort}`,
          changeOrigin: true,
          secure: false,
        },
      },
    },
    build: {
      outDir: 'dist_verification',
      sourcemap: isProduction ? 'hidden' : true,
      target: 'esnext',
      minify: 'esbuild',
      rollupOptions: {
        output: {
          manualChunks: (id) => {
            // Core Vendors
            if (id.includes('node_modules/react/') ||
              id.includes('node_modules/react-dom/') ||
              id.includes('node_modules/react/jsx-runtime')) {
              return 'vendor-react';
            }
            if (id.includes('node_modules')) {
              if (id.includes('react-router')) return 'vendor-router';
              if (id.includes('@tanstack')) return 'vendor-tanstack';
              if (id.includes('lucide-react')) return 'vendor-icons';
              if (id.includes('date-fns')) return 'vendor-utils';
              if (id.includes('zod')) return 'vendor-utils';
              if (id.includes('framer-motion')) return 'vendor-motion';
              if (id.includes('dompurify')) return 'vendor-security';
              if (id.includes('axios')) return 'vendor-http';
              if (id.includes('i18next')) return 'vendor-i18n';
              // Lazy-loaded heavy deps — split from catch-all
              if (id.includes('recharts') || id.includes('d3-')) return 'vendor-charts';
              if (id.includes('@radix-ui')) return 'vendor-radix';
              if (id.includes('zustand') || id.includes('immer')) return 'vendor-state';
              if (id.includes('@dnd-kit')) return 'vendor-dnd';
              if (id.includes('react-hook-form') || id.includes('@hookform')) return 'vendor-forms';
              if (id.includes('emoji-picker-react')) return 'vendor-emoji';
              if (id.includes('hls.js')) return 'vendor-media';
              if (id.includes('@sentry')) return 'vendor-sentry';
              if (id.includes('swagger-ui')) return 'vendor-swagger';
              if (id.includes('@juspay-tech') || id.includes('hyper')) return 'vendor-payments';
              if (id.includes('react-hot-toast')) return 'vendor-toast';
              if (id.includes('react-dropzone')) return 'vendor-dropzone';
              if (id.includes('class-variance-authority') || id.includes('clsx') || id.includes('tailwind-merge')) return 'vendor-styling';
              return 'vendor'; // Remaining small deps
            }
          },
        },
      },
      chunkSizeWarningLimit: 1000,
    },
    // Standard optimization settings usually work best
    optimizeDeps: {
      include: ['react', 'react-dom'],
      // Only scan from app entry; avoid storybook-static (and other build outputs) being picked up as entries
      entries: ['index.html', 'src/main.tsx'],
    },
  }
})