Logos & scanner changes

backend/server.js

@@ -16,6 +16,8 @@ import rateLimit from 'express-rate-limit';
 import webpush from 'web-push';
 import pino from 'pino';
 import pinoHttp from 'pino-http';
+import multer from 'multer';
+import { createWorker } from 'tesseract.js';
 import { searchMedicines, getMedicineDetails } from './cima-service.js';
 import { runFarmaciaWebhookImport, DEFAULT_FARMACIAS_WEBHOOK, importPharmaciesFromRows } from './farmacias-webhook-import.js';
 import { fetchPharmaciesExternal } from '../API/index.js';
@@ -515,6 +517,57 @@ app.get('/api/tsi/:cip/prescriptions', async (req, res) => {
   }
 });
 
+// ========== TSI OCR: extract CIP from uploaded photo ==========
+
+const upload = multer({
+  storage: multer.memoryStorage(),
+  limits: { fileSize: 10 * 1024 * 1024 }, // 10 MB max
+  fileFilter: (_req, file, cb) => {
+    if (file.mimetype.startsWith('image/')) cb(null, true);
+    else cb(new Error('Only image files are accepted'));
+  },
+});
+
+// Extract CIP from OCR text — looks for a long alphanumeric token (16 chars typical for CIP)
+function extractCip(text) {
+  const cleaned = text.replace(/\s+/g, '');
+  // Try exact 16-char alphanumeric match first
+  const exact = cleaned.match(/[A-Z0-9]{16}/i);
+  if (exact) return exact[0].toUpperCase();
+  // Fallback: 8–30 alphanumeric chars
+  const loose = cleaned.match(/[A-Z0-9]{8,30}/i);
+  if (loose) return loose[0].toUpperCase();
+  return null;
+}
+
+app.post('/api/tsi/ocr', upload.single('photo'), async (req, res) => {
+  try {
+    if (!req.file) {
+      return res.status(400).json({ error: 'No image file provided' });
+    }
+
+    const worker = await createWorker('spa+eng');
+    const { data } = await worker.recognize(req.file.buffer);
+    await worker.terminate();
+
+    console.log('[OCR] Raw text:', data.text);
+    const cip = extractCip(data.text);
+    console.log('[OCR] Extracted CIP:', cip);
+
+    if (!cip) {
+      return res.status(422).json({
+        error: 'No se pudo detectar un código CIP en la imagen',
+        ocrText: data.text.trim().slice(0, 500),
+      });
+    }
+
+    res.json({ cip });
+  } catch (error) {
+    console.error('TSI OCR error:', error);
+    res.status(500).json({ error: 'Error procesando la imagen' });
+  }
+});
+
 // ========== AUTHENTICATION ROUTES ==========
 
 // Login endpoint