webapp/vite.chat.config.ts

import { fileURLToPath, URL } from 'node:url'
import vue from '@vitejs/plugin-vue'
import tailwindcss from '@tailwindcss/vite'
import { defineConfig, type Plugin } from 'vite'
import { VitePWA } from 'vite-plugin-pwa'
import { ViteImageOptimizer } from 'vite-plugin-image-optimizer'
import { visualizer } from 'rollup-plugin-visualizer'

function chatHtmlPlugin(): Plugin {
  return {
    name: 'chat-html-rewrite',
    configureServer(server) {
      server.middlewares.use((req, _res, next) => {
        // Strip query before checking for an extension — JWTs (e.g. ?token=...)
        // contain dots and would otherwise get mistaken for an asset request.
        const path = req.url ? req.url.split('?')[0] : ''
        if (
          req.url &&
          !req.url.startsWith('/@') &&
          !req.url.startsWith('/src/') &&
          !req.url.startsWith('/node_modules/') &&
          !path.includes('.')
        ) {
          req.url = '/chat.html'
        }
        next()
      })
    },
  }
}

/**
 * Vite config for the standalone Chat app.
 *
 * Set VITE_BASE_PATH to deploy under a path prefix:
 *   VITE_BASE_PATH=/chat/ → app.${domain}/chat/ (shared auth)
 *   (default: /)          → chat.${domain} (standalone subdomain)
 */
export default defineConfig(({ mode }) => ({
  base: process.env.VITE_BASE_PATH || '/',
  // Per-app dep cache so concurrent dev servers don't race on .vite/deps
  cacheDir: 'node_modules/.vite-chat',
  server: {
    port: 5183,
    strictPort: true,
  },
  plugins: [
    chatHtmlPlugin(),
    vue(),
    tailwindcss(),
    VitePWA({
      registerType: 'autoUpdate',
      devOptions: { enabled: false },
      workbox: {
        globPatterns: ['**/*.{js,css,html,ico,png,svg}'],
        navigateFallback: 'chat.html',
        navigateFallbackAllowlist: [
          new RegExp(`^${(process.env.VITE_BASE_PATH || '/').replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}`),
        ],
      },
      includeAssets: [
        'favicon.ico',
        'apple-touch-icon.png',
        'mask-icon.svg',
        'icon-192.png',
        'icon-512.png',
        'icon-maskable-192.png',
        'icon-maskable-512.png',
      ],
      manifest: {
        name: 'Chat — Encrypted',
        short_name: 'Chat',
        description: 'End-to-end encrypted Nostr chat',
        theme_color: '#16a34a',
        background_color: '#ffffff',
        display: 'standalone',
        orientation: 'portrait-primary',
        start_url: process.env.VITE_BASE_PATH || '/',
        scope: process.env.VITE_BASE_PATH || '/',
        id: 'chat-app',
        categories: ['social', 'communication'],
        lang: 'en',
        icons: [
          { src: 'icon-192.png', sizes: '192x192', type: 'image/png', purpose: 'any' },
          { src: 'icon-512.png', sizes: '512x512', type: 'image/png', purpose: 'any' },
          { src: 'icon-maskable-192.png', sizes: '192x192', type: 'image/png', purpose: 'maskable' },
          { src: 'icon-maskable-512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
        ],
      },
    }),
    ViteImageOptimizer({
      jpg: { quality: 80 },
      png: { quality: 80 },
      webp: { lossless: true },
    }),
    mode === 'analyze' &&
      visualizer({
        open: true,
        filename: 'dist-chat/stats.html',
        gzipSize: true,
        brotliSize: true,
      }),
  ],
  resolve: {
    alias: {
      // ORDER MATTERS — @/app.config must precede @ (first-match-wins).
      '@/app.config': fileURLToPath(new URL('./src/chat-app/app.config.ts', import.meta.url)),
      '@': fileURLToPath(new URL('./src', import.meta.url)),
    },
  },
  build: {
    outDir: 'dist-chat',
    rollupOptions: {
      input: 'chat.html',
      output: {
        manualChunks: {
          'vue-vendor': ['vue', 'vue-router', 'pinia'],
          'ui-vendor': ['radix-vue', '@vueuse/core'],
          'shadcn': ['class-variance-authority', 'clsx', 'tailwind-merge'],
        },
      },
    },
    chunkSizeWarningLimit: 1000,
  },
}))