feat: initialize Postgres schema and set up core API routing for articles and photos

postgres/init.sql

@@ -12,6 +12,13 @@ CREATE TABLE IF NOT EXISTS sync_log (
   error_msg    TEXT
 );
 
+-- Index photos lafoirfouille.fr (construit depuis les sitemaps)
+CREATE TABLE IF NOT EXISTS ff_photo_index (
+  photo_code   TEXT PRIMARY KEY,
+  product_url  TEXT NOT NULL,
+  indexed_at   TIMESTAMP DEFAULT NOW()
+);
+
 -- ============================================================
 -- Référentiel articles
 -- ============================================================

src/app.js

@@ -13,6 +13,7 @@ const syncRouter        = require('./routes/sync');
 const rankingRouter       = require('./routes/ranking');
 const publicitesRouter    = require('./routes/publicites');
 const commandesAutoRouter = require('./routes/commandes-auto');
+const photosRouter        = require('./routes/photos');
 
 const app = express();
 app.use(express.json());
@@ -40,6 +41,7 @@ app.use('/api/sync',         syncRouter);
 app.use('/api/ranking',      rankingRouter);
 app.use('/api/publicites',      publicitesRouter);
 app.use('/api/commandes-auto',  commandesAutoRouter);
+app.use('/api/photos',         photosRouter);
 
 // 404
 app.use((req, res) => {

src/routes/articles.js

@@ -283,31 +283,30 @@ const photoCache = new Map();
 
 const FF_UA = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36';
 
-async function resolvePhotoUrl(code, size) {
+async function resolvePhotoUrl(pool, code, size) {
   const cacheKey = `${code}:${size}`;
   const cached = photoCache.get(cacheKey);
   if (cached && cached.expires > Date.now()) return cached.imageUrl;
 
-  // 1. Cherche la page produit via search lafoirfouille.fr
-  const searchRes = await fetch(`https://www.lafoirfouille.fr/FR/search?q=${code}`, {
-    headers: { 'User-Agent': FF_UA, 'Accept-Language': 'fr-FR,fr;q=0.9' },
-    redirect: 'follow',
-  });
-  const searchHtml = await searchRes.text();
+  // 1. Cherche l'URL produit dans l'index sitemap
+  const indexRow = await pool.query(
+    `SELECT product_url FROM ff_photo_index WHERE photo_code = $1`,
+    [code]
+  );
+  if (!indexRow.rows.length) return null;
 
-  // Extrait URL produit du HTML (SSR partiel possible)
-  const urlMatch = searchHtml.match(new RegExp(`(/[^"']*?/p/[^"']*?-${code}\\.html)`));
-  if (!urlMatch) return null;
+  const productPageUrl = indexRow.rows[0].product_url;
 
   // 2. Fetch page produit pour URL signée
-  const productRes = await fetch(`https://www.lafoirfouille.fr${urlMatch[1]}`, {
+  const productRes = await fetch(productPageUrl, {
     headers: { 'User-Agent': FF_UA, 'Accept-Language': 'fr-FR,fr;q=0.9' },
   });
+  if (!productRes.ok) return null;
   const productHtml = await productRes.text();
 
   // Extrait URL CDN signée (pattern: medias/{code}-0-{size}?context=...)
   const imgPattern = new RegExp(
-    `https://prod-api\\.lafoirfouille\\.fr/medias/${code}-0-${size}\\?context=[A-Za-z0-9+/=_-]+`
+    `https://prod-api\\.lafoirfouille\\.fr/medias/${code}-0-${size}\\?context=[A-Za-z0-9+/=_%-]+`
   );
   const imgMatch = productHtml.match(imgPattern);
   if (!imgMatch) return null;
@@ -336,7 +335,8 @@ router.get('/:id/photo', async (req, res) => {
     if (!nomphoto) return res.status(404).json({ error: 'Pas de photo pour cet article' });
 
     const code = nomphoto.replace(/\.[^.]+$/, '');
-    const imageUrl = await resolvePhotoUrl(code, size);
+    if (!/^\d{9,13}$/.test(code)) return res.status(404).json({ error: 'Format photo non supporté', nomphoto });
+    const imageUrl = await resolvePhotoUrl(pool, code, size);
 
     if (!imageUrl) return res.status(404).json({ error: 'Photo non trouvée sur lafoirfouille.fr', code });
 

src/routes/photos.js

@@ -0,0 +1,87 @@
+const express = require('express');
+const router = express.Router();
+const { getPool } = require('../config/database');
+
+const FF_SITEMAPS = [
+  'https://www.lafoirfouille.fr/sitemapProducts_0.xml',
+  'https://www.lafoirfouille.fr/sitemapProducts_1.xml',
+  'https://www.lafoirfouille.fr/sitemapProducts_2.xml',
+];
+const FF_UA = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36';
+// Code produit lafoirfouille.fr : 9-13 chiffres en fin d'URL
+const CODE_RE = /\/p\/[^/]+-(\d{9,13})\.html/g;
+
+let indexingInProgress = false;
+
+async function indexSitemaps(pool) {
+  let total = 0;
+  for (const sitemapUrl of FF_SITEMAPS) {
+    const res = await fetch(sitemapUrl, { headers: { 'User-Agent': FF_UA } });
+    if (!res.ok) continue;
+    const xml = await res.text();
+
+    // Extrait toutes les URLs de produits
+    const urlMatches = [...xml.matchAll(/<loc>(https[^<]+)<\/loc>/g)];
+    const rows = [];
+    for (const [, url] of urlMatches) {
+      const codeMatch = url.match(/\/p\/[^/]+-(\d{9,13})\.html/);
+      if (codeMatch) rows.push({ code: codeMatch[1], url });
+    }
+
+    if (!rows.length) continue;
+
+    // Upsert par batch de 500
+    for (let i = 0; i < rows.length; i += 500) {
+      const batch = rows.slice(i, i + 500);
+      const values = batch.map((r, j) => `($${j * 2 + 1}, $${j * 2 + 2})`).join(', ');
+      const params = batch.flatMap(r => [r.code, r.url]);
+      await pool.query(
+        `INSERT INTO ff_photo_index (photo_code, product_url, indexed_at)
+         VALUES ${values}
+         ON CONFLICT (photo_code) DO UPDATE
+           SET product_url = EXCLUDED.product_url, indexed_at = NOW()`,
+        params
+      );
+    }
+    total += rows.length;
+  }
+  return total;
+}
+
+// POST /api/photos/reindex — déclenche l'indexation des sitemaps
+router.post('/reindex', async (req, res) => {
+  if (indexingInProgress) return res.status(409).json({ error: 'Indexation déjà en cours' });
+
+  const pool = getPool();
+  indexingInProgress = true;
+  const start = Date.now();
+
+  try {
+    const total = await indexSitemaps(pool);
+    const elapsed = ((Date.now() - start) / 1000).toFixed(1);
+    res.json({ indexed: total, elapsed_s: parseFloat(elapsed) });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  } finally {
+    indexingInProgress = false;
+  }
+});
+
+// GET /api/photos/status
+router.get('/status', async (req, res) => {
+  try {
+    const pool = getPool();
+    const result = await pool.query(
+      `SELECT COUNT(*) AS total, MAX(indexed_at) AS last_index FROM ff_photo_index`
+    );
+    res.json({
+      total: parseInt(result.rows[0].total),
+      last_index: result.rows[0].last_index,
+      indexing_in_progress: indexingInProgress,
+    });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+module.exports = router;