import { getRedis } from '../redis'; import { proxyUpstream } from './upstream'; import { buildUpstreamHeaders } from './headers'; const CACHE_KEY = 'landing:pl_pl:html'; const CACHE_TTL_SEC = 60 * 30; // 30 minutes /** Fetch homepage from upstream with a browser UA and store in Redis. */ export async function refreshLandingCache(): Promise { try { const headers = buildUpstreamHeaders( { 'user-agent': 'Mozilla/5.0', 'accept-language': 'pl-PL,pl;q=0.9', }, 'www.sinsay.com', ); const upstream = await proxyUpstream({ method: 'GET', path: '/pl/pl/', headers, }); if (upstream.statusCode !== 200) { console.warn('[landing-cache] refresh failed status', upstream.statusCode); return false; } const ct = String(upstream.headers['content-type'] ?? ''); if (!ct.includes('text/html')) return false; const redis = getRedis(); await redis.setex(CACHE_KEY, CACHE_TTL_SEC, upstream.body); console.log('[landing-cache] refreshed', upstream.body.length, 'bytes'); return true; } catch (err) { console.error('[landing-cache] refresh error:', (err as Error).message); return false; } } export async function getCachedLanding(): Promise { try { const redis = getRedis(); const raw = await redis.getBuffer(CACHE_KEY); return raw && raw.length > 0 ? raw : null; } catch { return null; } } export function startLandingCacheRefresh(): void { void refreshLandingCache(); setInterval(() => void refreshLandingCache(), 15 * 60 * 1000); } export async function setCachedLanding(body: Buffer): Promise { try { const redis = getRedis(); await redis.setex(CACHE_KEY, CACHE_TTL_SEC, body); } catch { // non-fatal } } /** Minimal Polish storefront page — last resort when upstream and cache both fail. */ export const FALLBACK_LANDING_HTML = ` Sinsay – moda online

Sinsay

Moda online – Polska

Codziennie nowe produkty. Odkryj kolekcje damskie, męskie i dziecięce.

`; export function isLandingPath(path: string): boolean { const p = path.split('?')[0] || '/'; return p === '/pl/pl' || p === '/pl/pl/'; } /** Google Ads + Search crawlers that must always receive HTTP 200 on the landing URL. */ export function isAdsDestinationBot(userAgent: string): boolean { return /(?:adsbot-google|googlebot|google-inspectiontool|googleother|mediapartners-google|google-adwords-instant)/i.test( userAgent, ); }