feat(mobile): integrate product search with filter tabs in search screen

apps/frontend-mobile/app/(tabs)/search.tsx

@@ -1,7 +1,7 @@
 import React, { useState, useEffect } from 'react';
 import { View, FlatList, StyleSheet, Text, TouchableOpacity, useWindowDimensions } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
-import { useNavigation } from 'expo-router';
+import { useNavigation, useRouter } from 'expo-router';
 import { SearchBar } from '../../components/SearchBar';
 import { MedicineCard } from '../../components/MedicineCard';
 import { LoadingSpinner } from '../../components/LoadingSpinner';
@@ -9,6 +9,7 @@ import { useDebounce } from '../../hooks/useDebounce';
 import { useAuth } from '../../hooks/useAuth';
 import { useRecentSearches } from '../../hooks/useRecentSearches';
 import { searchMedicines } from '../../services/medicines';
+import { searchProducts, Product } from '../../services/products';
 import { useThemeContext } from '../../components/ThemeProvider';
 import { spacing, borderRadius } from '../../constants/theme';
 import { Medicine } from '../../types';
@@ -31,11 +32,14 @@ export default function SearchScreen() {
   const { colors } = useThemeContext();
   const [query, setQuery] = useState('');
   const [results, setResults] = useState<Medicine[]>([]);
+  const [products, setProducts] = useState<Product[]>([]);
+  const [searchMode, setSearchMode] = useState<'all' | 'medicines' | 'products'>('all');
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
 
   const debouncedQuery = useDebounce(query, config.SEARCH_DEBOUNCE_MS);
   const navigation = useNavigation();
+  const router = useRouter();
 
   useEffect(() => {
     const parent = navigation.getParent();
@@ -43,6 +47,8 @@ export default function SearchScreen() {
     const unsubscribe = parent.addListener('tabPress', () => {
       setQuery('');
       setResults([]);
+      setProducts([]);
+      setSearchMode('all');
       setIsLoading(false);
       setError(null);
     });
@@ -52,6 +58,7 @@ export default function SearchScreen() {
   useEffect(() => {
     if (debouncedQuery.length < 2) {
       setResults([]);
+      setProducts([]);
       return;
     }
 
@@ -69,7 +76,17 @@ export default function SearchScreen() {
       }
     };
 
+    const fetchProducts = async () => {
+      try {
+        const productResults = await searchProducts(debouncedQuery);
+        setProducts(productResults);
+      } catch (err) {
+        console.error('Product search error:', err);
+      }
+    };
+
     fetchResults();
+    fetchProducts();
   }, [debouncedQuery]);
 
   const handleSearch = (searchQuery: string) => {
@@ -77,7 +94,7 @@ export default function SearchScreen() {
     if (searchQuery.trim()) addSearch(searchQuery);
   };
 
-  const showSuggestions = !query && !isLoading && results.length === 0;
+  const showSuggestions = !query && !isLoading && results.length === 0 && products.length === 0;
 
   return (
     <View style={[styles.container, { backgroundColor: colors.background }]}>
@@ -87,6 +104,20 @@ export default function SearchScreen() {
         onChangeText={setQuery}
       />
 
+      {query.length >= 2 && (
+        <View style={styles.filterContainer}>
+          <TouchableOpacity style={[styles.filterTab, searchMode === 'all' && styles.filterTabActive]} onPress={() => setSearchMode('all')}>
+            <Text style={[styles.filterText, searchMode === 'all' && styles.filterTextActive]}>Todos</Text>
+          </TouchableOpacity>
+          <TouchableOpacity style={[styles.filterTab, searchMode === 'medicines' && styles.filterTabActive]} onPress={() => setSearchMode('medicines')}>
+            <Text style={[styles.filterText, searchMode === 'medicines' && styles.filterTextActive]}>Medicamentos</Text>
+          </TouchableOpacity>
+          <TouchableOpacity style={[styles.filterTab, searchMode === 'products' && styles.filterTabActive]} onPress={() => setSearchMode('products')}>
+            <Text style={[styles.filterText, searchMode === 'products' && styles.filterTextActive]}>Parafarmacia</Text>
+          </TouchableOpacity>
+        </View>
+      )}
+
       {showSuggestions && (
         <>
           <View style={[styles.suggestionsSection, isTablet && styles.suggestionsSectionTablet]}>
@@ -130,7 +161,7 @@ export default function SearchScreen() {
         </>
       )}
 
-      {isLoading && <LoadingSpinner message="Buscando medicamentos..." />}
+      {isLoading && <LoadingSpinner message="Buscando..." />}
 
       {error && (
         <View style={[styles.errorContainer, isTablet && styles.errorContainerTablet, { backgroundColor: colors.dangerContainer }]}>
@@ -138,16 +169,43 @@ export default function SearchScreen() {
         </View>
       )}
 
-      {!isLoading && !error && results.length === 0 && query.length >= 2 && (
+      {!isLoading && !error && results.length === 0 && products.length === 0 && query.length >= 2 && (
         <View style={styles.emptyContainer}>
-          <Text style={[styles.emptyText, { color: colors.textSecondary }]}>No se encontraron medicamentos</Text>
+          <Text style={[styles.emptyText, { color: colors.textSecondary }]}>No se encontraron resultados</Text>
         </View>
       )}
 
       <FlatList
-        data={results}
+        data={(searchMode === 'medicines' || searchMode === 'all') ? results : []}
         keyExtractor={(item) => item.nregistro}
         renderItem={({ item }) => <MedicineCard medicine={item} />}
+        ListHeaderComponent={
+          <>
+            {(searchMode === 'all' || searchMode === 'products') && products.length > 0 && (
+              <View style={styles.section}>
+                <Text style={[styles.sectionTitle, { color: colors.text }]}>Parafarmacia y Bebé</Text>
+                {products.map((product) => (
+                  <TouchableOpacity
+                    key={`${product.source}-${product.id}`}
+                    style={[styles.productCard, { backgroundColor: colors.card, borderColor: colors.border }]}
+                    onPress={() => router.push(`/product/${product.source}/${product.id}`)}
+                    activeOpacity={0.7}
+                  >
+                    <View style={styles.productInfo}>
+                      <View style={styles.badges}>
+                        <View style={[styles.sourceBadge, { backgroundColor: product.source === 'cima' ? '#2563eb' : '#16a34a' }]}>
+                          <Text style={styles.badgeText}>{product.source === 'cima' ? 'CIMA' : 'OFF'}</Text>
+                        </View>
+                      </View>
+                      <Text style={[styles.productName, { color: colors.text }]} numberOfLines={1}>{product.name}</Text>
+                      <Text style={[styles.productBrand, { color: colors.textSecondary }]} numberOfLines={1}>{product.brand}</Text>
+                    </View>
+                  </TouchableOpacity>
+                ))}
+              </View>
+            )}
+          </>
+        }
         contentContainerStyle={[styles.list, isTablet && styles.listTablet]}
         showsVerticalScrollIndicator={false}
       />
@@ -159,6 +217,34 @@ const styles = StyleSheet.create({
   container: {
     flex: 1,
   },
+  filterContainer: {
+    flexDirection: 'row',
+    justifyContent: 'center',
+    gap: spacing.sm,
+    paddingVertical: spacing.sm,
+    paddingHorizontal: spacing.md,
+  },
+  filterTab: {
+    paddingHorizontal: spacing.md,
+    paddingVertical: spacing.sm,
+    borderRadius: borderRadius.full,
+    backgroundColor: 'rgba(0,0,0,0.05)',
+  },
+  filterTabActive: {
+    backgroundColor: '#7fbf8f',
+  },
+  filterText: {
+    fontSize: 14,
+    fontWeight: '600',
+    color: '#41493e',
+  },
+  filterTextActive: {
+    color: '#ffffff',
+  },
+  section: {
+    paddingHorizontal: spacing.lg,
+    marginTop: spacing.md,
+  },
   suggestionsSection: {
     marginTop: spacing.sm,
     alignSelf: 'center',
@@ -245,4 +331,38 @@ const styles = StyleSheet.create({
   emptyText: {
     fontSize: 16,
   },
+  productCard: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    borderRadius: borderRadius.lg,
+    borderWidth: 1,
+    padding: spacing.md,
+    marginBottom: spacing.sm,
+  },
+  productInfo: {
+    flex: 1,
+    gap: 4,
+  },
+  badges: {
+    flexDirection: 'row',
+    gap: spacing.sm,
+    marginBottom: 2,
+  },
+  sourceBadge: {
+    paddingHorizontal: spacing.sm,
+    paddingVertical: 2,
+    borderRadius: borderRadius.sm,
+  },
+  badgeText: {
+    color: '#ffffff',
+    fontSize: 11,
+    fontWeight: '700',
+  },
+  productName: {
+    fontSize: 15,
+    fontWeight: '600',
+  },
+  productBrand: {
+    fontSize: 13,
+  },
 });