vite.config.ts

import { defineConfig } from "vite";
import react from "@vitejs/plugin-react-swc";
import path from "path";
import { componentTagger } from "lovable-tagger";
import { VitePWA } from "vite-plugin-pwa";
import viteCompression from "vite-plugin-compression";

// https://vitejs.dev/config/
export default defineConfig(({ mode }) => ({
  server: {
    host: "::",
    port: 8080,
  },
  build: {
    rollupOptions: {
      output: {
        manualChunks: {
          // Core React ecosystem
          "vendor-react": ["react", "react-dom", "react-router-dom", "@tanstack/react-query"],
          // Heavy editor libraries
          "vendor-monaco": ["@monaco-editor/react"],
          // PDF processing
          "vendor-pdf": ["pdfjs-dist"],
          // Flow/diagram library
          "vendor-reactflow": ["reactflow"],
          // Charts library
          "vendor-charts": ["recharts"],
          // Office document processing
          "vendor-office": ["exceljs", "mammoth", "docx", "jszip"],
          // Radix UI components
          "vendor-radix": [
            "@radix-ui/react-accordion",
            "@radix-ui/react-alert-dialog",
            "@radix-ui/react-avatar",
            "@radix-ui/react-checkbox",
            "@radix-ui/react-collapsible",
            "@radix-ui/react-context-menu",
            "@radix-ui/react-dialog",
            "@radix-ui/react-dropdown-menu",
            "@radix-ui/react-hover-card",
            "@radix-ui/react-label",
            "@radix-ui/react-menubar",
            "@radix-ui/react-navigation-menu",
            "@radix-ui/react-popover",
            "@radix-ui/react-progress",
            "@radix-ui/react-radio-group",
            "@radix-ui/react-scroll-area",
            "@radix-ui/react-select",
            "@radix-ui/react-separator",
            "@radix-ui/react-slider",
            "@radix-ui/react-slot",
            "@radix-ui/react-switch",
            "@radix-ui/react-tabs",
            "@radix-ui/react-toast",
            "@radix-ui/react-toggle",
            "@radix-ui/react-toggle-group",
            "@radix-ui/react-tooltip",
          ],
        },
      },
    },
  },
  plugins: [
    react(),
    mode === "development" && componentTagger(),
    // Brotli compression (best compression ratio)
    viteCompression({
      algorithm: "brotliCompress",
      ext: ".br",
      threshold: 1024, // Only compress files > 1KB
    }),
    // Gzip fallback for older browsers
    viteCompression({
      algorithm: "gzip",
      ext: ".gz",
      threshold: 1024,
    }),
    VitePWA({
      registerType: "prompt",
      includeAssets: ["favicon.ico", "apple-touch-icon.png", "pwa-192x192.png", "pwa-512x512.png"],
      manifest: {
        name: "Pronghorn - AI-Powered Enterprise Application Platform",
        short_name: "Pronghorn",
        description: "Transform unstructured requirements into traceable, compliant applications with Pronghorn's standards-first, agentic AI platform.",
        theme_color: "#0a0a0a",
        background_color: "#0a0a0a",
        display: "standalone",
        orientation: "portrait-primary",
        start_url: "/",
        scope: "/",
        id: "/",
        categories: ["productivity", "developer tools", "business"],
        prefer_related_applications: false,
        icons: [
          {
            src: "/pwa-192x192.png",
            sizes: "192x192",
            type: "image/png",
            purpose: "any",
          },
          {
            src: "/pwa-512x512.png",
            sizes: "512x512",
            type: "image/png",
            purpose: "any",
          },
          {
            src: "/pwa-512x512.png",
            sizes: "512x512",
            type: "image/png",
            purpose: "maskable",
          },
        ],
      },
      workbox: {
        // Only precache core app files, not large vendor chunks
        globPatterns: ["**/*.{css,html,ico,png,svg,woff2}"],
        // Exclude vendor chunks from precaching (they'll use runtime caching)
        globIgnores: ["**/vendor-*.js"],
        maximumFileSizeToCacheInBytes: 2 * 1024 * 1024, // 2 MiB for core app
        cleanupOutdatedCaches: true,
        clientsClaim: true,
        skipWaiting: false,
        runtimeCaching: [
          // Cache vendor chunks on first use with long expiration
          {
            urlPattern: /\/assets\/vendor-.*\.js$/,
            handler: "CacheFirst",
            options: {
              cacheName: "vendor-chunks",
              expiration: {
                maxEntries: 20,
                maxAgeSeconds: 60 * 60 * 24 * 30, // 30 days
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
          // Cache lazy-loaded page chunks
          {
            urlPattern: /\/assets\/.*-[a-zA-Z0-9]+\.js$/,
            handler: "StaleWhileRevalidate",
            options: {
              cacheName: "page-chunks",
              expiration: {
                maxEntries: 50,
                maxAgeSeconds: 60 * 60 * 24 * 7, // 7 days
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
          {
            urlPattern: /^https:\/\/.*\.supabase\.co\/.*/i,
            handler: "NetworkFirst",
            options: {
              cacheName: "supabase-api",
              expiration: {
                maxEntries: 100,
                maxAgeSeconds: 60 * 60, // 1 hour
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
          {
            urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,
            handler: "CacheFirst",
            options: {
              cacheName: "google-fonts-cache",
              expiration: {
                maxEntries: 10,
                maxAgeSeconds: 60 * 60 * 24 * 365, // 1 year
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
          {
            urlPattern: /^https:\/\/fonts\.gstatic\.com\/.*/i,
            handler: "CacheFirst",
            options: {
              cacheName: "gstatic-fonts-cache",
              expiration: {
                maxEntries: 10,
                maxAgeSeconds: 60 * 60 * 24 * 365, // 1 year
              },
              cacheableResponse: {
                statuses: [0, 200],
              },
            },
          },
        ],
      },
      devOptions: {
        enabled: false,
      },
    }),
  ].filter(Boolean),
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
    },
  },
}));