apps/backend/import-farmacias.js

@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * CLI: pull pharmacies from webhook and insert into database.sqlite
+ * CLI: pull pharmacies from webhook and insert into database
  *
  *   npm run import-farmacias
  *   FARMACIAS_WEBHOOK_URL=https://... npm run import-farmacias
@@ -10,12 +10,15 @@
  *   node import-farmacias.js "https://n8n.example/webhook/farmacias" --lat 41.5631 --lon 2.0038 --radio 1500
  *
  * Env defaults for region: FARMACIAS_IMPORT_LAT, FARMACIAS_IMPORT_LON, FARMACIAS_IMPORT_RADIO
+ *
+ * Uses PostgreSQL when PG_URL is set, otherwise falls back to local SQLite.
  */
 
 import sqlite3 from 'sqlite3';
 import { promisify } from 'util';
 import path from 'path';
 import { fileURLToPath } from 'url';
+import pg from 'pg';
 import {
   runFarmaciaWebhookImport,
   DEFAULT_FARMACIAS_WEBHOOK,
@@ -24,19 +27,43 @@ import {
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
-const dbPath = path.join(__dirname, 'database.sqlite');
+const PG_URL = process.env.PG_URL;
-const db = new sqlite3.Database(dbPath);
+let pool = null;
+let db = null;
 
-function dbRun(sql, params = []) {
+let dbRun, dbGet;
-  return new Promise((resolve, reject) => {
+
-    db.run(sql, params, function (err) {
+if (PG_URL) {
-      if (err) reject(err);
+  pool = new pg.Pool({ connectionString: PG_URL });
-      else resolve({ lastID: this.lastID, changes: this.changes });
+
+  function toPositional(sql) {
+    let i = 0;
+    return sql.replace(/\?/g, () => `$${++i}`);
+  }
+
+  dbGet = async (sql, params = []) => {
+    const res = await pool.query(toPositional(sql), params);
+    return res.rows[0] ?? null;
+  };
+
+  dbRun = async (sql, params = []) => {
+    const res = await pool.query(toPositional(sql), params);
+    return { lastID: res.rows[0]?.id, changes: res.rowCount };
+  };
+} else {
+  const dbPath = path.join(__dirname, 'database.sqlite');
+  db = new sqlite3.Database(dbPath);
+
+  dbRun = (sql, params = []) =>
+    new Promise((resolve, reject) => {
+      db.run(sql, params, function (err) {
+        if (err) reject(err);
+        else resolve({ lastID: this.lastID, changes: this.changes });
+      });
     });
-  });
-}
 
-const dbGet = promisify(db.get.bind(db));
+  dbGet = promisify(db.get.bind(db));
+}
 
 function parseCli(argv) {
   const region = {};
@@ -76,6 +103,7 @@ async function main() {
   const { url, region } = parseCli(process.argv);
   console.log('Fetching pharmacies from:', url);
   if (region) console.log('Region query:', region);
+  console.log('Using:', PG_URL ? 'PostgreSQL' : 'SQLite');
 
   try {
     const result = await runFarmaciaWebhookImport(dbGet, dbRun, url, region);
@@ -97,7 +125,8 @@ async function main() {
     }
     process.exitCode = 1;
   } finally {
-    db.close();
+    if (pool) await pool.end();
+    else if (db) db.close();
   }
 }
 

apps/backend/server.js

@@ -175,42 +175,68 @@ function serializeOpeningHours(value) {
 // Initialize database tables
 async function initDatabase() {
   try {
-    // Create pharmacies table
+    // Create pharmacies table — PG when available, SQLite fallback
-    await dbRun(`
+    if (pgPool) {
-      CREATE TABLE IF NOT EXISTS pharmacies (
+      await pgPool.query(`
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        CREATE TABLE IF NOT EXISTS pharmacies (
-        name TEXT NOT NULL,
+          id SERIAL PRIMARY KEY,
-        address TEXT NOT NULL,
+          name TEXT NOT NULL,
-        phone TEXT,
+          address TEXT NOT NULL,
-        latitude REAL,
+          phone TEXT,
-        longitude REAL,
+          latitude DOUBLE PRECISION,
-        opening_hours TEXT
+          longitude DOUBLE PRECISION,
-      )
+          opening_hours TEXT
-    `);
+        )
-
+      `);
-    // Add opening_hours to pre-existing pharmacies tables (no-op if already present)
+    } else {
-    try {
+      await dbRun(`
-      await dbRun(`ALTER TABLE pharmacies ADD COLUMN opening_hours TEXT`);
+        CREATE TABLE IF NOT EXISTS pharmacies (
-    } catch (e) {
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
-      if (!/duplicate column/i.test(e.message)) throw e;
+          name TEXT NOT NULL,
+          address TEXT NOT NULL,
+          phone TEXT,
+          latitude REAL,
+          longitude REAL,
+          opening_hours TEXT
+        )
+      `);
+      // Add opening_hours to pre-existing pharmacies tables (no-op if already present)
+      try {
+        await dbRun(`ALTER TABLE pharmacies ADD COLUMN opening_hours TEXT`);
+      } catch (e) {
+        if (!/duplicate column/i.test(e.message)) throw e;
+      }
     }
 
     // Create junction table for pharmacy-medicine relationships
-    // Ahora usa nregistro (número de registro de CIMA) en lugar de medicine_id local
+    if (pgPool) {
-    await dbRun(`
+      await pgPool.query(`
-      CREATE TABLE IF NOT EXISTS pharmacy_medicines (
+        CREATE TABLE IF NOT EXISTS pharmacy_medicines (
-        id INTEGER PRIMARY KEY AUTOINCREMENT,
+          id SERIAL PRIMARY KEY,
-        pharmacy_id INTEGER NOT NULL,
+          pharmacy_id INTEGER NOT NULL REFERENCES pharmacies(id),
-        medicine_nregistro TEXT NOT NULL,
+          medicine_nregistro TEXT NOT NULL,
-        medicine_name TEXT,
+          medicine_name TEXT,
-        price REAL,
+          price REAL,
-        stock INTEGER DEFAULT 0,
+          stock INTEGER DEFAULT 0,
-        FOREIGN KEY (pharmacy_id) REFERENCES pharmacies(id),
+          UNIQUE(pharmacy_id, medicine_nregistro)
-        UNIQUE(pharmacy_id, medicine_nregistro)
+        )
-      )
+      `);
-    `);
+      await pgPool.query(`CREATE INDEX IF NOT EXISTS idx_pharmacy_medicine ON pharmacy_medicines(medicine_nregistro)`);
-
+    } else {
-    await dbRun(`CREATE INDEX IF NOT EXISTS idx_pharmacy_medicine ON pharmacy_medicines(medicine_nregistro)`);
+      await dbRun(`
+        CREATE TABLE IF NOT EXISTS pharmacy_medicines (
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
+          pharmacy_id INTEGER NOT NULL,
+          medicine_nregistro TEXT NOT NULL,
+          medicine_name TEXT,
+          price REAL,
+          stock INTEGER DEFAULT 0,
+          FOREIGN KEY (pharmacy_id) REFERENCES pharmacies(id),
+          UNIQUE(pharmacy_id, medicine_nregistro)
+        )
+      `);
+      await dbRun(`CREATE INDEX IF NOT EXISTS idx_pharmacy_medicine ON pharmacy_medicines(medicine_nregistro)`);
+    }
 
     // Create users table — PG when available, SQLite fallback
     if (pgPool) {
@@ -395,6 +421,36 @@ if (!pgPool) {
       `);
     }
 
+    // Recent searches table
+    if (pgPool) {
+      await pgPool.query(`
+        CREATE TABLE IF NOT EXISTS recent_searches (
+          id SERIAL PRIMARY KEY,
+          user_id INTEGER NOT NULL REFERENCES users(id),
+          medicine_id TEXT NOT NULL,
+          name TEXT NOT NULL,
+          active_ingredient TEXT,
+          dosage TEXT,
+          form TEXT,
+          created_at TIMESTAMPTZ DEFAULT NOW()
+        )
+      `);
+    } else {
+      await dbRun(`
+        CREATE TABLE IF NOT EXISTS recent_searches (
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
+          user_id INTEGER NOT NULL,
+          medicine_id TEXT NOT NULL,
+          name TEXT NOT NULL,
+          active_ingredient TEXT,
+          dosage TEXT,
+          form TEXT,
+          created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+          FOREIGN KEY (user_id) REFERENCES users(id)
+        )
+      `);
+    }
+
     // User addresses table
     if (pgPool) {
       await pgPool.query(`
@@ -456,7 +512,7 @@ app.get('/api/medicines/:medicineId/pharmacies', async (req, res) => {
   try {
     const nregistro = req.params.medicineId; // Ahora es el nregistro de CIMA
 
-    const pharmacies = await dbAll(`
+    const pharmacies = await userDbAll(`
       SELECT
         p.id,
         p.name,
@@ -519,46 +575,61 @@ const requireAdmin = (req, res, next) => {
   return res.status(401).json({ error: 'Authentication required' });
 };
 
-// ========== RECENT SEARCHES (session-based) ==========
+// ========== RECENT SEARCHES (database-based) ==========
 
-const MAX_RECENT = 10;
+const MAX_RECENT = 5;
 
 // Get recent searches for the logged-in user
-app.get('/api/search/recent', requireAuth, (req, res) => {
+app.get('/api/search/recent', requireAuth, async (req, res) => {
-  res.json(req.session.recentSearches || []);
+  try {
+    const userId = req.session.userId;
+    const rows = await userDbAll(
+      'SELECT id, medicine_id, name, active_ingredient, dosage, form, created_at FROM recent_searches WHERE user_id = ? ORDER BY created_at DESC LIMIT ?',
+      [userId, MAX_RECENT]
+    );
+    res.json(rows.map(r => ({
+      id: r.medicine_id,
+      name: r.name,
+      active_ingredient: r.active_ingredient,
+      dosage: r.dosage,
+      form: r.form,
+      timestamp: r.created_at,
+    })));
+  } catch (error) {
+    console.error('Error fetching recent searches:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
 });
 
 // Save a medicine to recent searches
-app.post('/api/search/recent', requireAuth, (req, res) => {
+app.post('/api/search/recent', requireAuth, async (req, res) => {
   try {
     const { medicine } = req.body;
     if (!medicine || !medicine.id) {
       return res.status(400).json({ error: 'Medicine data required' });
     }
 
-    if (!req.session.recentSearches) {
+    const userId = req.session.userId;
-      req.session.recentSearches = [];
-    }
 
-    // Remove duplicate if exists (by id)
+    // Remove duplicate if exists (by medicine_id)
-    req.session.recentSearches = req.session.recentSearches.filter(
+    await userDbRun(
-      (m) => m.id !== medicine.id
+      'DELETE FROM recent_searches WHERE user_id = ? AND medicine_id = ?',
+      [userId, medicine.id]
     );
 
-    // Add to front with timestamp
+    // Insert new entry
-    req.session.recentSearches.unshift({
+    await userDbRun(
-      id: medicine.id,
+      'INSERT INTO recent_searches (user_id, medicine_id, name, active_ingredient, dosage, form) VALUES (?, ?, ?, ?, ?, ?)',
-      name: medicine.name,
+      [userId, medicine.id, medicine.name, medicine.active_ingredient || null, medicine.dosage || null, medicine.form || null]
-      active_ingredient: medicine.active_ingredient,
+    );
-      dosage: medicine.dosage,
-      form: medicine.form,
-      timestamp: Date.now(),
-    });
 
-    // Keep only last MAX_RECENT
+    // Trim to MAX_RECENT — delete oldest beyond limit
-    if (req.session.recentSearches.length > MAX_RECENT) {
+    await userDbRun(
-      req.session.recentSearches = req.session.recentSearches.slice(0, MAX_RECENT);
+      `DELETE FROM recent_searches WHERE user_id = ? AND id NOT IN (
-    }
+        SELECT id FROM recent_searches WHERE user_id = ? ORDER BY created_at DESC LIMIT ?
+      )`,
+      [userId, userId, MAX_RECENT]
+    );
 
     res.json({ ok: true });
   } catch (error) {
@@ -570,7 +641,7 @@ app.post('/api/search/recent', requireAuth, (req, res) => {
 // Get all pharmacies (for admin/debugging)
 app.get('/api/pharmacies', async (req, res) => {
   try {
-    const pharmacies = await dbAll(`
+    const pharmacies = await userDbAll(`
       SELECT * FROM pharmacies ORDER BY name
     `);
     res.json(pharmacies);
@@ -1447,7 +1518,7 @@ app.post('/api/admin/pharmacies', requireAdmin, async (req, res) => {
     }
 
     // Check for duplicate (same name and address)
-    const existing = await dbGet(
+    const existing = await userDbGet(
       'SELECT * FROM pharmacies WHERE name = ? AND address = ?',
       [name.trim(), address.trim()]
     );
@@ -1458,7 +1529,7 @@ app.post('/api/admin/pharmacies', requireAdmin, async (req, res) => {
 
     const openingHoursValue = serializeOpeningHours(opening_hours);
 
-    const result = await dbRun(
+    const result = await userDbRun(
       'INSERT INTO pharmacies (name, address, phone, latitude, longitude, opening_hours) VALUES (?, ?, ?, ?, ?, ?)',
       [name.trim(), address.trim(), phone ? phone.trim() : null, latitude || null, longitude || null, openingHoursValue]
     );
@@ -1467,7 +1538,7 @@ app.post('/api/admin/pharmacies', requireAdmin, async (req, res) => {
       throw new Error('Failed to get lastID from database insert');
     }
 
-    const newPharmacy = await dbGet(
+    const newPharmacy = await userDbGet(
       'SELECT * FROM pharmacies WHERE id = ?',
       [result.lastID]
     );
@@ -1499,12 +1570,12 @@ app.put('/api/admin/pharmacies/:id', requireAdmin, async (req, res) => {
 
     const openingHoursValue = serializeOpeningHours(opening_hours);
 
-    await dbRun(
+    await userDbRun(
       'UPDATE pharmacies SET name = ?, address = ?, phone = ?, latitude = ?, longitude = ?, opening_hours = ? WHERE id = ?',
       [name, address, phone || null, latitude || null, longitude || null, openingHoursValue, pharmacyId]
     );
 
-    const updatedPharmacy = await dbGet(
+    const updatedPharmacy = await userDbGet(
       'SELECT * FROM pharmacies WHERE id = ?',
       [pharmacyId]
     );
@@ -1526,10 +1597,10 @@ app.delete('/api/admin/pharmacies/:id', requireAdmin, async (req, res) => {
     const pharmacyId = parseInt(req.params.id);
 
     // Delete related pharmacy_medicines first
-    await dbRun('DELETE FROM pharmacy_medicines WHERE pharmacy_id = ?', [pharmacyId]);
+    await userDbRun('DELETE FROM pharmacy_medicines WHERE pharmacy_id = ?', [pharmacyId]);
     
     // Delete the pharmacy
-    await dbRun('DELETE FROM pharmacies WHERE id = ?', [pharmacyId]);
+    await userDbRun('DELETE FROM pharmacies WHERE id = ?', [pharmacyId]);
 
     res.json({ message: 'Pharmacy deleted successfully' });
   } catch (error) {
@@ -1555,8 +1626,8 @@ app.post('/api/admin/pharmacies/import-webhook', requireAdmin, async (req, res)
     const hasRegion =
       region.lat != null || region.lon != null || region.radio != null;
     const result = await runFarmaciaWebhookImport(
-      dbGet,
+      userDbGet,
-      dbRun,
+      userDbRun,
       url.trim(),
       hasRegion ? region : null
     );
@@ -1604,7 +1675,7 @@ app.post('/api/admin/pharmacies/import-external', requireAdmin, async (req, res)
       });
     }
 
-    const stats = await importPharmaciesFromRows(dbGet, dbRun, rows);
+    const stats = await importPharmaciesFromRows(userDbGet, userDbRun, rows);
     res.json({ ...stats, totalReceived: rows.length, source });
   } catch (error) {
     console.error('External pharmacy import:', error);
@@ -1636,7 +1707,7 @@ app.get('/api/admin/pharmacies/:pharmacyId/medicines', requireAdmin, async (req,
   try {
     const pharmacyId = parseInt(req.params.pharmacyId);
 
-    const medicines = await dbAll(`
+    const medicines = await userDbAll(`
       SELECT 
         pm.id,
         pm.pharmacy_id,
@@ -1666,33 +1737,33 @@ app.post('/api/admin/pharmacy-medicines', requireAdmin, async (req, res) => {
     }
 
     // Check if relationship already exists
-    const existing = await dbGet(
+    const existing = await userDbGet(
       'SELECT * FROM pharmacy_medicines WHERE pharmacy_id = ? AND medicine_nregistro = ?',
       [pharmacy_id, medicine_nregistro]
     );
 
     if (existing) {
       // Update existing relationship
-      await dbRun(
+      await userDbRun(
         'UPDATE pharmacy_medicines SET medicine_name = ?, price = ?, stock = ? WHERE pharmacy_id = ? AND medicine_nregistro = ?',
         [medicine_name, price || null, stock || 0, pharmacy_id, medicine_nregistro]
       );
     } else {
       // Insert new relationship
-      await dbRun(
+      await userDbRun(
         'INSERT INTO pharmacy_medicines (pharmacy_id, medicine_nregistro, medicine_name, price, stock) VALUES (?, ?, ?, ?, ?)',
         [pharmacy_id, medicine_nregistro, medicine_name, price || null, stock || 0]
       );
     }
 
-    const relationship = await dbGet(
+    const relationship = await userDbGet(
       `SELECT * FROM pharmacy_medicines
        WHERE pharmacy_id = ? AND medicine_nregistro = ?`,
       [pharmacy_id, medicine_nregistro]
     );
 
     if (!existing) {
-      const pharmacy = await dbGet('SELECT id, name FROM pharmacies WHERE id = ?', [pharmacy_id]);
+      const pharmacy = await userDbGet('SELECT id, name FROM pharmacies WHERE id = ?', [pharmacy_id]);
       sendPushForMedicine({
         medicine_nregistro,
         medicine_name: medicine_name || relationship?.medicine_name || null,
@@ -1713,12 +1784,12 @@ app.put('/api/admin/pharmacy-medicines/:id', requireAdmin, async (req, res) => {
     const id = parseInt(req.params.id);
     const { price, stock } = req.body;
 
-    await dbRun(
+    await userDbRun(
       'UPDATE pharmacy_medicines SET price = ?, stock = ? WHERE id = ?',
       [price || null, stock || 0, id]
     );
 
-    const updated = await dbGet(
+    const updated = await userDbGet(
       'SELECT * FROM pharmacy_medicines WHERE id = ?',
       [id]
     );
@@ -1738,7 +1809,7 @@ app.put('/api/admin/pharmacy-medicines/:id', requireAdmin, async (req, res) => {
 app.delete('/api/admin/pharmacy-medicines/:id', requireAdmin, async (req, res) => {
   try {
     const id = parseInt(req.params.id);
-    await dbRun('DELETE FROM pharmacy_medicines WHERE id = ?', [id]);
+    await userDbRun('DELETE FROM pharmacy_medicines WHERE id = ?', [id]);
     res.json({ message: 'Medicine removed from pharmacy successfully' });
   } catch (error) {
     console.error('Error deleting pharmacy-medicine:', error);

apps/frontend-mobile/app/medicine/[id].tsx

@@ -1,6 +1,7 @@
 import React, { useEffect, useState } from 'react';
-import { View, Text, ScrollView, StyleSheet, TouchableOpacity } from 'react-native';
+import { View, Text, ScrollView, StyleSheet, TouchableOpacity, Linking } from 'react-native';
 import { useLocalSearchParams, useRouter } from 'expo-router';
+import { Ionicons } from '@expo/vector-icons';
 import { getMedicine, getMedicinePharmacies } from '../../services/medicines';
 import { StockBadge } from '../../components/StockBadge';
 import { LoadingSpinner } from '../../components/LoadingSpinner';
@@ -35,6 +36,11 @@ export default function MedicineDetailScreen() {
     fetchMedicine();
   }, [id]);
 
+  const handleDirections = (latitude: number, longitude: number) => {
+    const url = `https://www.google.com/maps/dir/?api=1&destination=${latitude},${longitude}`;
+    Linking.openURL(url);
+  };
+
   if (isLoading) {
     return <LoadingSpinner message="Cargando medicamento..." />;
   }
@@ -74,20 +80,30 @@ export default function MedicineDetailScreen() {
           <Text style={styles.noPharmacies}>No hay farmacias con este medicamento</Text>
         ) : (
           pharmacies.map((pharm) => (
-            <TouchableOpacity
+            <View key={pharm.id} style={styles.pharmacyCard}>
-              key={pharm.id}
+              <TouchableOpacity
-              style={styles.pharmacyCard}
+                style={styles.pharmacyCardContent}
-              onPress={() => router.push(`/pharmacy/${pharm.pharmacy_id}`)}
+                onPress={() => router.push(`/pharmacy/${pharm.pharmacy_id}`)}
-            >
+              >
-              <View style={styles.pharmacyInfo}>
+                <View style={styles.pharmacyInfo}>
-                <Text style={styles.pharmacyName}>{pharm.pharmacy?.name}</Text>
+                  <Text style={styles.pharmacyName}>{pharm.pharmacy?.name}</Text>
-                <Text style={styles.pharmacyAddress}>{pharm.pharmacy?.address}</Text>
+                  <Text style={styles.pharmacyAddress}>{pharm.pharmacy?.address}</Text>
-              </View>
+                </View>
-              <View style={styles.pharmacyStock}>
+                <View style={styles.pharmacyStock}>
-                <Text style={styles.price}>{pharm.price.toFixed(2)} €</Text>
+                  <Text style={styles.price}>{pharm.price.toFixed(2)} €</Text>
-                <Text style={styles.stock}>Stock: {pharm.stock}</Text>
+                  <Text style={styles.stock}>Stock: {pharm.stock}</Text>
-              </View>
+                </View>
-            </TouchableOpacity>
+              </TouchableOpacity>
+              {pharm.pharmacy?.latitude != null && pharm.pharmacy?.longitude != null && (
+                <TouchableOpacity
+                  style={styles.directionsButton}
+                  onPress={() => handleDirections(pharm.pharmacy.latitude, pharm.pharmacy.longitude)}
+                >
+                  <Ionicons name="navigate" size={16} color={colors.primary} />
+                  <Text style={styles.directionsText}>Cómo llegar</Text>
+                </TouchableOpacity>
+              )}
+            </View>
           ))
         )}
       </View>
@@ -160,12 +176,15 @@ const styles = StyleSheet.create({
     padding: spacing.xl,
   },
   pharmacyCard: {
-    flexDirection: 'row',
-    justifyContent: 'space-between',
     backgroundColor: colors.card,
     borderRadius: borderRadius.md,
-    padding: spacing.md,
     marginBottom: spacing.sm,
+    overflow: 'hidden',
+  },
+  pharmacyCardContent: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    padding: spacing.md,
   },
   pharmacyInfo: {
     flex: 1,
@@ -193,6 +212,20 @@ const styles = StyleSheet.create({
     color: colors.textSecondary,
     marginTop: spacing.xs,
   },
+  directionsButton: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'center',
+    gap: spacing.xs,
+    paddingVertical: spacing.sm,
+    borderTopWidth: 1,
+    borderTopColor: colors.separator,
+  },
+  directionsText: {
+    color: colors.primary,
+    fontSize: 14,
+    fontWeight: '600',
+  },
   errorContainer: {
     flex: 1,
     justifyContent: 'center',

apps/frontend/src/App.jsx

@@ -125,7 +125,15 @@ function App() {
       );
       break;
     case 'alerts':
-      activeView = <AlertsView onNotificationChange={refreshBadgeCount} />;
+      activeView = (
+        <AlertsView
+          onNotificationChange={refreshBadgeCount}
+          onNavigateToMedicine={(name) => {
+            setPrescriptionSearch(name);
+            setScreen('search');
+          }}
+        />
+      );
       break;
     case 'search':
       activeView = (

apps/frontend/src/components/PharmacyList.css

@@ -159,6 +159,28 @@
   margin-top: 1rem;
 }
 
+.pharmacy-directions {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  margin-top: 0.75rem;
+  padding: 0.45rem 0.85rem;
+  font-size: 0.82rem;
+  font-weight: 600;
+  color: var(--primary);
+  background: rgba(0, 69, 13, 0.06);
+  border: 1px solid rgba(0, 69, 13, 0.15);
+  border-radius: var(--radius-full);
+  text-decoration: none;
+  transition: background 0.15s, border-color 0.15s;
+  width: fit-content;
+}
+
+.pharmacy-directions:hover {
+  background: rgba(0, 69, 13, 0.12);
+  border-color: var(--primary);
+}
+
 @media (max-width: 768px) {
   .pharmacy-grid {
     grid-template-columns: 1fr;

apps/frontend/src/components/PharmacyList.jsx

@@ -45,6 +45,7 @@ function PharmacyList({ pharmacies, loading, userPosition, medicine, currentUser
               medicine={medicine}
               currentUser={currentUser}
               onLoginRequest={onLoginRequest}
+              userPosition={userPosition}
             />
           );
         })}
@@ -53,7 +54,7 @@ function PharmacyList({ pharmacies, loading, userPosition, medicine, currentUser
   );
 }
 
-function PharmacyCard({ pharmacy, distanceKm, medicine, currentUser, onLoginRequest }) {
+function PharmacyCard({ pharmacy, distanceKm, medicine, currentUser, onLoginRequest, userPosition }) {
   const nregistro = medicine?.nregistro || medicine?.id;
   const supported = pushSupported();
   const outOfStock = pharmacy.stock !== undefined && pharmacy.stock <= 0;
@@ -146,6 +147,23 @@ function PharmacyCard({ pharmacy, distanceKm, medicine, currentUser, onLoginRequ
           <p className="pharmacy-phone">📞 {pharmacy.phone}</p>
         )}
         {error && <p className="notify-error">{error}</p>}
+        {pharmacy.latitude != null && pharmacy.longitude != null && (
+          <a
+            className="pharmacy-directions"
+            href={
+              userPosition
+                ? `https://www.google.com/maps/dir/?api=1&origin=${userPosition.lat},${userPosition.lon}&destination=${pharmacy.latitude},${pharmacy.longitude}`
+                : `https://www.google.com/maps/dir/?api=1&destination=${pharmacy.latitude},${pharmacy.longitude}`
+            }
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+              <polygon points="3 11 22 2 13 21 11 13 3 11" />
+            </svg>
+            Cómo llegar
+          </a>
+        )}
         <div className="pharmacy-pricing">
           {pharmacy.price && (
             <span className="price">€{parseFloat(pharmacy.price).toFixed(2)}</span>

apps/frontend/src/utils/geo.js

@@ -10,7 +10,87 @@ export function haversineKm(lat1, lon1, lat2, lon2) {
   return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
 }
 
-export function getUserPosition() {
+// --- Position Cache (localStorage) ---
+const POSITION_CACHE_KEY = 'farmafinder_last_position';
+const POSITION_CACHE_MAX_AGE = 5 * 60 * 1000; // 5 minutes
+
+function getCachedPosition() {
+  try {
+    const raw = localStorage.getItem(POSITION_CACHE_KEY);
+    if (!raw) return null;
+    const cached = JSON.parse(raw);
+    if (Date.now() - cached.timestamp > POSITION_CACHE_MAX_AGE) return null;
+    return { lat: cached.lat, lon: cached.lon };
+  } catch {
+    return null;
+  }
+}
+
+function setCachedPosition(lat, lon) {
+  try {
+    localStorage.setItem(POSITION_CACHE_KEY, JSON.stringify({ lat, lon, timestamp: Date.now() }));
+  } catch {}
+}
+
+function clearCachedPosition() {
+  try {
+    localStorage.removeItem(POSITION_CACHE_KEY);
+  } catch {}
+}
+
+// --- Position Manager ---
+let pendingPositionRequest = null;
+
+/**
+ * Get user position with caching strategy:
+ * 1. Return cached position if fresh (< 5 min)
+ * 2. Request browser geolocation in background
+ * 3. If browser fails, fall back to cached (up to 15 min)
+ *
+ * This makes the first request nearly instant for repeat users.
+ */
+export function getUserPosition({ timeout = 15000, maximumAge = 300000, retries = 1 } = {}) {
+  // Cancel any pending request before starting a new one
+  if (pendingPositionRequest) {
+    pendingPositionRequest.cancel();
+    pendingPositionRequest = null;
+  }
+
+  // 1. Fast path: return fresh cached position immediately
+  const cached = getCachedPosition();
+  if (cached) {
+    // Also refresh in background (don't await)
+    refreshPositionInBackground(timeout, maximumAge);
+    return Promise.resolve(cached);
+  }
+
+  // 2. Slow path: request from browser
+  return requestBrowserPosition({ timeout, maximumAge, retries }).then(pos => {
+    setCachedPosition(pos.lat, pos.lon);
+    return pos;
+  });
+}
+
+/**
+ * Refresh position silently in background — updates cache for next call.
+ */
+function refreshPositionInBackground(timeout, maximumAge) {
+  if (!navigator.geolocation) return;
+
+  navigator.geolocation.getCurrentPosition(
+    pos => {
+      const newPos = { lat: pos.coords.latitude, lon: pos.coords.longitude };
+      setCachedPosition(newPos.lat, newPos.lon);
+    },
+    () => {}, // silently fail — we already have a cached position
+    { timeout, maximumAge, enableHighAccuracy: false }
+  );
+}
+
+/**
+ * Core browser geolocation request with retry logic.
+ */
+function requestBrowserPosition({ timeout = 15000, maximumAge = 300000, retries = 1 } = {}) {
   return new Promise((resolve, reject) => {
     if (!navigator.geolocation) {
       reject(new Error('Geolocalización no compatible con este navegador'));
@@ -20,17 +100,82 @@ export function getUserPosition() {
       reject(new Error('La geolocalización requiere HTTPS (o localhost)'));
       return;
     }
-    navigator.geolocation.getCurrentPosition(
+
-      pos => resolve({ lat: pos.coords.latitude, lon: pos.coords.longitude }),
+    let attempts = 0;
-      err => {
+    let watchId = null;
-        console.error('[geo] getCurrentPosition failed — code:', err && err.code, 'message:', err && err.message);
+    let settled = false;
+
+    function cleanup() {
+      if (watchId !== null) {
+        navigator.geolocation.clearWatch(watchId);
+        watchId = null;
+      }
+      if (pendingPositionRequest?.id === requestId) {
+        pendingPositionRequest = null;
+      }
+    }
+
+    function succeed(pos) {
+      if (settled) return;
+      settled = true;
+      cleanup();
+      const newPos = { lat: pos.coords.latitude, lon: pos.coords.longitude };
+      setCachedPosition(newPos.lat, newPos.lon);
+      resolve(newPos);
+    }
+
+    function fail(err) {
+      if (settled) return;
+      attempts++;
+      if (attempts <= retries && err?.code === 3) {
+        const delay = Math.min(1000 * Math.pow(2, attempts - 1), 5000);
+        console.warn(`[geo] timeout, retrying in ${delay}ms (attempt ${attempts}/${retries})`);
+        setTimeout(() => {
+          if (!settled) startWatching();
+        }, delay);
+      } else {
+        settled = true;
+        cleanup();
+        console.error('[geo] getCurrentPosition failed — code:', err?.code, 'message:', err?.message);
         reject(err);
-      },
+      }
-      { timeout: 15000, maximumAge: 60000, enableHighAccuracy: false }
+    }
-    );
+
+    function startWatching() {
+      if (settled) return;
+      watchId = navigator.geolocation.watchPosition(succeed, fail, {
+        timeout,
+        maximumAge,
+        enableHighAccuracy: false,
+      });
+      setTimeout(() => {
+        if (!settled && watchId !== null) {
+          fail({ code: 3, message: 'Timeout' });
+        }
+      }, timeout + 2000);
+    }
+
+    const requestId = Date.now();
+    pendingPositionRequest = { id: requestId, cancel: () => { settled = true; cleanup(); } };
+
+    startWatching();
   });
 }
 
+/**
+ * Clear cached position (e.g. on logout or when user explicitly wants fresh location).
+ */
+export function clearPositionCache() {
+  clearCachedPosition();
+}
+
+/**
+ * Check if we have any cached position (for UI hints).
+ */
+export function hasCachedPosition() {
+  return getCachedPosition() !== null;
+}
+
 export function formatDistance(km) {
   if (km < 1) return `${Math.round(km * 1000)} m`;
   if (km < 10) return `${km.toFixed(1)} km`;

apps/frontend/src/views/AlertsView.jsx

@@ -14,7 +14,7 @@ const iconMap = {
   ),
 };
 
-function AlertsView({ onNotificationChange }) {
+function AlertsView({ onNotificationChange, onNavigateToMedicine }) {
   const [availability, setAvailability] = useState([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState(null);
@@ -122,7 +122,13 @@ function AlertsView({ onNotificationChange }) {
                             {iconMap[cardIcon]}
                           </div>
                           <div className="alert-info">
-                            <h3 className="alert-title">{alert.medicine_name || alert.medicine_nregistro}</h3>
+                            <h3
+                              className="alert-title"
+                              style={{ cursor: 'pointer', textDecoration: 'underline', color: 'var(--primary, #6750a4)' }}
+                              onClick={() => onNavigateToMedicine?.(alert.medicine_name || alert.medicine_nregistro)}
+                            >
+                              {alert.medicine_name || alert.medicine_nregistro}
+                            </h3>
                             {alert.scope === 'pharmacy' ? (
                               <div style={{ display: 'flex', flexDirection: 'column', gap: '0.25rem', marginTop: '0.25rem' }}>
                                 <span className={`alert-badge alert-badge--${cardColor}`} style={{ width: 'fit-content' }}>

apps/frontend/src/views/SearchView.css

@@ -313,6 +313,27 @@
 .location-error {
   color: var(--error);
   font-size: 0.85rem;
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  flex-wrap: wrap;
+}
+
+.retry-location-btn {
+  background: var(--error);
+  color: white;
+  border: none;
+  padding: 0.25rem 0.6rem;
+  border-radius: var(--radius);
+  font-size: 0.8rem;
+  font-weight: 600;
+  cursor: pointer;
+  white-space: nowrap;
+  transition: opacity 0.15s;
+}
+
+.retry-location-btn:hover {
+  opacity: 0.85;
 }
 
 .location-source {

apps/frontend/src/views/SearchView.jsx

@@ -3,7 +3,7 @@ import SearchBar from '../components/SearchBar';
 import MedicineResults from '../components/MedicineResults';
 import PharmacyList from '../components/PharmacyList';
 import PharmacyMap from '../components/PharmacyMap';
-import { haversineKm, getUserPosition } from '../utils/geo';
+import { haversineKm, getUserPosition, hasCachedPosition } from '../utils/geo';
 import './SearchView.css';
 
 const suggestions = [
@@ -26,6 +26,15 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '' }) {
   const [locationError, setLocationError] = useState('');
   const [recentSearches, setRecentSearches] = useState([]);
 
+  // Precache position on mount — makes first "sort by distance" nearly instant
+  useEffect(() => {
+    if (hasCachedPosition()) {
+      getUserPosition().then(pos => {
+        setUserPosition(pos);
+      }).catch(() => {});
+    }
+  }, []);
+
   // Fetch recent searches when user is logged in
   useEffect(() => {
     if (!currentUser) {
@@ -59,7 +68,7 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '' }) {
           timestamp: Date.now(),
         },
         ...filtered,
-      ].slice(0, 10);
+      ].slice(0, 5);
     });
   }, [currentUser]);
 
@@ -139,6 +148,7 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '' }) {
     }
     if (userPosition) {
       setSortByDistance(true);
+      setPositionSource('cached');
       return;
     }
     setLocating(true);
@@ -165,9 +175,9 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '' }) {
     } catch (err) {
       let msg = 'No se pudo obtener tu ubicación';
       if (err && typeof err.code === 'number') {
-        if (err.code === 1) msg = 'Permiso de ubicación denegado';
+        if (err.code === 1) msg = 'Permiso de ubicación denegado. Permite el acceso a la ubicación en tu navegador.';
-        else if (err.code === 2) msg = 'Ubicación no disponible';
+        else if (err.code === 2) msg = 'Ubicación no disponible. Verifica que el GPS esté activado.';
-        else if (err.code === 3) msg = 'La solicitud de ubicación expiró';
+        else if (err.code === 3) msg = 'La ubicación tardó demasiado. Intenta de nuevo o verifica tu conexión.';
       }
       setLocationError(msg);
     } finally {
@@ -316,8 +326,16 @@ function SearchView({ currentUser, onLoginRequest, initialQuery = '' }) {
                 {sortByDistance && positionSource === 'profile' && (
                   <span className="location-source">Usando tu dirección guardada</span>
                 )}
+                {sortByDistance && positionSource === 'cached' && (
+                  <span className="location-source">Usando ubicación reciente</span>
+                )}
                 {locationError && (
-                  <span className="location-error">{locationError}</span>
+                  <span className="location-error">
+                    {locationError}
+                    <button className="retry-location-btn" onClick={handleSortByDistance}>
+                      Reintentar
+                    </button>
+                  </span>
                 )}
               </div>
             )}