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

// https://vite.dev/config/
export default defineConfig({
  server: {
    host: true, // Allow external access
    allowedHosts: [
      'localhost',
      'litterscouts.psbailey.uk',
      '.psbailey.uk', // Allow all subdomains
    ],
  },
  plugins: [
    react(),
    VitePWA({
      registerType: 'autoUpdate',
      includeAssets: ['vite.svg'],
      manifest: {
        name: 'Litter Scouts',
        short_name: 'Litter Scouts',
        description: 'Crowdsourced environmental monitoring of Irish coastal areas',
        theme_color: '#0ea5e9',
        background_color: '#ffffff',
        display: 'standalone',
        icons: [
          {
            src: '/vite.svg',
            sizes: '192x192',
            type: 'image/svg+xml',
          },
          {
            src: '/vite.svg',
            sizes: '512x512',
            type: 'image/svg+xml',
          },
        ],
      },
      workbox: {
        // Cache strategy
        runtimeCaching: [
          {
            urlPattern: /^https:\/\/api\.*/i,
            handler: 'NetworkFirst',
            options: {
              cacheName: 'api-cache',
              expiration: {
                maxEntries: 50,
                maxAgeSeconds: 60 * 60 * 24, // 24 hours
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
          {
            urlPattern: /^https:\/\/.*\.(?:png|jpg|jpeg|svg|gif|webp)$/,
            handler: 'CacheFirst',
            options: {
              cacheName: 'image-cache',
              expiration: {
                maxEntries: 100,
                maxAgeSeconds: 60 * 60 * 24 * 30, // 30 days
              },
            },
          },
          {
            urlPattern: /^https:\/\/tile\.openstreetmap\.org\/.*/i,
            handler: 'CacheFirst',
            options: {
              cacheName: 'map-tiles-cache',
              expiration: {
                maxEntries: 500,
                maxAgeSeconds: 60 * 60 * 24 * 30, // 30 days
              },
            },
          },
        ],
        // Don't cache these patterns
        navigateFallbackDenylist: [/^\/api/],
      },
    }),
  ],
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
      '@/components': path.resolve(__dirname, './src/components'),
      '@/pages': path.resolve(__dirname, './src/pages'),
      '@/services': path.resolve(__dirname, './src/services'),
      '@/hooks': path.resolve(__dirname, './src/hooks'),
      '@/utils': path.resolve(__dirname, './src/utils'),
      '@/types': path.resolve(__dirname, './src/types'),
    },
  },
  build: {
    // Optimize bundle size
    target: 'es2015',
    minify: 'terser',
    terserOptions: {
      compress: {
        drop_console: true, // Remove console.log in production
        drop_debugger: true,
      },
    },
    rollupOptions: {
      output: {
        manualChunks: {
          // Vendor chunks
          'react-vendor': ['react', 'react-dom', 'react-router-dom'],
          'clerk-vendor': ['@clerk/clerk-react'],
          'query-vendor': ['@tanstack/react-query'],
          'map-vendor': ['leaflet', 'react-leaflet', 'leaflet.heat', 'leaflet.markercluster'],
          'chart-vendor': ['recharts'],
        },
      },
    },
    // Increase chunk size warning limit for map libraries
    chunkSizeWarningLimit: 1000,
    // Enable CSS code splitting
    cssCodeSplit: true,
    // Source maps for production debugging (can be disabled for smaller builds)
    sourcemap: false,
  },
  // Optimize dependencies
  optimizeDeps: {
    include: [
      'react',
      'react-dom',
      'react-router-dom',
      '@clerk/clerk-react',
      '@tanstack/react-query',
      'leaflet',
      'react-leaflet',
    ],
  },
})