import { defineConfig } from 'vitest/config';
import react from '@vitejs/plugin-react';
import { VitePWA } from 'vite-plugin-pwa';
import basicSsl from '@vitejs/plugin-basic-ssl';
import { statSync } from 'node:fs';
import { APP_NAME } from './src/config';

// Exact (decoded) sizes of the big data files: servers compress and stream them without a Content-Length, so the loading bar needs these.
const size = (f: string) => { try { return statSync(f).size; } catch { return 0; } };
const DATA_BYTES = { snapshot: size('public/data/kk-snapshot.json'), transit: size('public/data/kk-transit.json') };

export default defineConfig({
  base: './',
  define: { __DATA_BYTES__: JSON.stringify(DATA_BYTES) },
  plugins: [
    react(),
    // index.html uses %APP_NAME%: one name for the whole app (src/config.ts)
    { name: 'app-name', transformIndexHtml: (html: string) => html.replaceAll('%APP_NAME%', APP_NAME) },
    // HTTPS=1 pnpm preview:https  -> phones need a secure context for motion sensors and GPS
    ...(process.env.HTTPS ? [basicSsl()] : []),
    VitePWA({
      registerType: 'autoUpdate',
      useCredentials: true, // manifest <link> sends cookies, or the reverse-proxy login (Authentik) redirects it cross-origin and CORS blocks it
      includeAssets: ['uswds/sprite.svg', 'icons/*.png', 'icons/*.svg'],
      manifest: {
        name: APP_NAME,
        short_name: APP_NAME,
        description:
          'Sprawdź dostępność miejsc i tras w Krakowie dla osób na wózkach i rodziców z wózkami dziecięcymi.',
        lang: 'pl',
        start_url: './',
        scope: './',
        display: 'standalone',
        background_color: '#ffffff',
        theme_color: '#1b1b1b',
        icons: [
          { src: 'icons/icon-192.png', sizes: '192x192', type: 'image/png' },
          { src: 'icons/icon-512.png', sizes: '512x512', type: 'image/png' },
          { src: 'icons/icon-maskable-512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
        ],
      },
      workbox: {
        // Offline-first: the whole app (code, fonts, icons, places, paths, timetable) is precached on the first visit.
        globPatterns: ['**/*.{js,mjs,css,html,svg,png,json,woff2}'],
        maximumFileSizeToCacheInBytes: 12 * 1024 * 1024, // the places snapshot is ~5.5 MB
        navigateFallback: 'index.html',
        navigateFallbackDenylist: [/^\/rt\//], // live feeds are never replaced by the app shell
        cleanupOutdatedCaches: true,
        clientsClaim: true,
        skipWaiting: true,
        runtimeCaching: [
          {
            // street map: the offline pack (src/lib/offline.ts) fills this cache; tiles seen while browsing land here too
            urlPattern: /^https:\/\/tile\.openstreetmap\.org\/.*/,
            handler: 'CacheFirst',
            options: {
              cacheName: 'osm-tiles',
              expiration: { maxEntries: 3000, maxAgeSeconds: 60 * 60 * 24 * 180, purgeOnQuotaError: true },
              cacheableResponse: { statuses: [0, 200] },
            },
          },
          {
            urlPattern: /^https:\/\/server\.arcgisonline\.com\/.*/,
            handler: 'CacheFirst',
            options: {
              cacheName: 'sat-tiles',
              expiration: { maxEntries: 1500, maxAgeSeconds: 60 * 60 * 24 * 60, purgeOnQuotaError: true },
              cacheableResponse: { statuses: [0, 200] },
            },
          },
          {
            // photo assessment: the on-device AI runtime and model are large; once used online they work offline too
            urlPattern: ({ url }: { url: URL }) => url.pathname.endsWith('.wasm') || /(^|\.)(huggingface\.co|hf\.co)$/.test(url.hostname),
            handler: 'CacheFirst',
            options: {
              cacheName: 'ai-runtime',
              expiration: { maxEntries: 40, purgeOnQuotaError: true },
              cacheableResponse: { statuses: [0, 200] },
            },
          },
        ],
      },
    }),
  ],
  // ZTP Kraków serves GTFS-Realtime without CORS headers: `rt/*` is proxied for `pnpm dev` and `pnpm preview`.
  // A static production host needs the same rule (e.g. nginx `location /rt/ { proxy_pass https://gtfs.ztp.krakow.pl/; }`).
  server: { proxy: { '/rt': { target: 'https://gtfs.ztp.krakow.pl', changeOrigin: true, rewrite: (p) => p.replace(/^\/rt/, '') } } },
  preview: { proxy: { '/rt': { target: 'https://gtfs.ztp.krakow.pl', changeOrigin: true, rewrite: (p) => p.replace(/^\/rt/, '') } } },
  css: {
    preprocessorOptions: {
      scss: {
        loadPaths: ['node_modules/@uswds/uswds/packages'],
        quietDeps: true,
        silenceDeprecations: ['import', 'mixed-decls', 'global-builtin', 'color-functions'],
      },
    },
  },
  test: { environment: 'node', include: ['src/**/*.test.ts'] },
});