// Bundle audit (March 2026):
// 1. kokoro-js worker chunk: 2,208 KB — lazy, loaded only inside TTS Web Worker
// 2. FightViewer chunk: 487 KB — lazy, includes kaplay + FightScene + sounds + sprites
// 3. Shared vendor chunk: 281 KB — Vue internals, nostr-tools shared code
// 4. Main entry chunk: 119 KB — Vue runtime + router
// 5. FightPage chunk: 39 KB — lazy, fight page UI
// kokoro-js is NOT in main bundle. kaplay is tree-shaken into FightViewer only.
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import tailwindcss from '@tailwindcss/vite'
import { VitePWA } from 'vite-plugin-pwa'

export default defineConfig({
  plugins: [
    vue(),
    tailwindcss(),
    VitePWA({
      registerType: 'autoUpdate',
      includeAssets: ['icon.svg'],
      manifest: {
        name: 'BOTFIGHTS',
        short_name: 'BOTFIGHTS',
        description: 'A safe place to hash it out',
        theme_color: '#0a0a0a',
        background_color: '#0a0a0a',
        display: 'standalone',
        orientation: 'any',
        start_url: '/',
        icons: [
          { src: '/icon.svg', sizes: 'any', type: 'image/svg+xml', purpose: 'any' },
          { src: '/icon-192.png', sizes: '192x192', type: 'image/png' },
          { src: '/icon-512.png', sizes: '512x512', type: 'image/png' },
          { src: '/icon-512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
        ],
      },
      workbox: {
        globPatterns: ['**/*.{js,css,html,svg,png,woff,woff2}'],
        maximumFileSizeToCacheInBytes: 5 * 1024 * 1024, // 5MB — kokoro TTS chunk is ~2.2MB
        cleanupOutdatedCaches: true,
        skipWaiting: true,
        clientsClaim: true,
        navigateFallback: '/index.html',
        navigateFallbackDenylist: [/^\/api\//],
        runtimeCaching: [
          {
            urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,
            handler: 'CacheFirst',
            options: { cacheName: 'google-fonts-css', expiration: { maxEntries: 10, maxAgeSeconds: 60 * 60 * 24 * 365 } },
          },
          {
            urlPattern: /^https:\/\/fonts\.gstatic\.com\/.*/i,
            handler: 'CacheFirst',
            options: { cacheName: 'google-fonts-webfont', expiration: { maxEntries: 30, maxAgeSeconds: 60 * 60 * 24 * 365 } },
          },
          {
            urlPattern: /\/api\/.*/i,
            handler: 'NetworkOnly',
            method: 'GET',
            options: { cacheName: 'api-cache' },
          },
          {
            urlPattern: /^https:\/\/huggingface\.co\/.*Kokoro.*\.onnx/i,
            handler: 'CacheFirst',
            options: { cacheName: 'kokoro-model', expiration: { maxEntries: 10, maxAgeSeconds: 60 * 60 * 24 * 90 } },
          },
          {
            urlPattern: /^https:\/\/cdn-lfs.*\.huggingface\.co\/.*/i,
            handler: 'CacheFirst',
            options: { cacheName: 'kokoro-model-lfs', expiration: { maxEntries: 20, maxAgeSeconds: 60 * 60 * 24 * 90 } },
          },
        ],
      },
    }),
  ],
  worker: {
    format: 'es', // Required for dynamic import('kokoro-js') inside the TTS worker
  },
  optimizeDeps: {
    // Pre-bundle kokoro-js on first startup so Vite doesn't stall mid-page-load
    // discovering it as a new dep. The 4.8MB bundle is cached in node_modules/.vite/deps.
    include: ['kokoro-js'],
  },
  server: {
    port: 9101,
    headers: {
      // Enable SharedArrayBuffer for onnxruntime WASM threads.
      // Without these, Kokoro TTS runs single-threaded on the main thread,
      // blocking the UI for seconds on every TTS generation.
      'Cross-Origin-Opener-Policy': 'same-origin',
      'Cross-Origin-Embedder-Policy': 'credentialless',
    },
    proxy: {
      '/api': {
        target: 'http://localhost:9100',
        changeOrigin: true,
      },
      '/ws': {
        target: 'ws://localhost:9100',
        ws: true,
      },
    },
  },
})