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: exclude /callback from SW navigation handling (Gate 2 — T-03-20)
      // The OIDC authorization-code exchange lands on /callback — if the SW
      // intercepts this as a navigation, it serves the cached shell instead of
      // letting the server process the authorization code exchange (login loop).
      workbox: {
        navigateFallback: '/index.html',
        navigateFallbackDenylist: [
          /^\/callback/, // OIDC redirect endpoint — must reach the server
          /^\/api\//, // API calls — never serve from cache
          /^\/health/, // Health endpoint
        ],
        // No /api caching — runtimeCaching: [] means all API calls fall through to network
        runtimeCaching: [],
      },
      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: {
    proxy: {
      '/health': 'http://localhost:3000',
      '/api': 'http://localhost:3000',
      '/callback': 'http://localhost:3000',
    },
  },
})