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

export default defineConfig({
  plugins: [
    react(),
    VitePWA({
      registerType: 'autoUpdate',
      // ⚠️ CRITICAL (T-03-20): generateSW migrated to injectManifest so the custom
      // sw.ts can add push + notificationclick handlers while preserving the /callback
      // denylist. The denylist is re-implemented explicitly in src/sw.ts.
      strategies: 'injectManifest',
      srcDir: 'src',
      filename: 'sw.ts',
      // rolldownOptions: force the SW output to IIFE so the output file is sw.js
      // (not sw.mjs). Vite 8 + vite-plugin-pwa 1.3.x defaults to ES module SW format
      // when the source is .ts, producing sw.mjs. The registerSW.js generated by
      // the plugin registers '/sw.js', so the filenames must match.
      rolldownOptions: {
        output: {
          format: 'iife',
        },
      },
      injectManifest: {
        // Prevent /callback-related URLs from appearing in the precache manifest.
        globIgnores: ['**/node_modules/**', '**/callback**'],
      },
      manifest: {
        name: 'FamilySync',
        short_name: 'FamilySync',
        description: 'Family calendar and lists',
        theme_color: '#4A90D9',
        background_color: '#ffffff',
        display: 'standalone',
        scope: '/',
        start_url: '/',
        icons: [
          { 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' },
        ],
      },
    }),
  ],
  server: {
    // Allow the internal split-DNS domain (and any subdomain) to reach the dev
    // server through the reverse proxy / tunnel. A leading dot matches the apex
    // and all subdomains. Dev-server only — production builds ignore this.
    allowedHosts: ['.bergerhouse.net'],
    proxy: {
      '/health': 'http://localhost:3000',
      '/api': 'http://localhost:3000',
      '/callback': 'http://localhost:3000',
    },
  },
});