order submission v1

app/_layout.tsx

@@ -3,12 +3,15 @@ import { Stack } from 'expo-router';
 import { GestureHandlerRootView } from 'react-native-gesture-handler';
 import { SafeAreaProvider } from 'react-native-safe-area-context';
 import React from 'react';
+import { CartProvider } from './context/cartContext'
 
 export default function Layout() {
   return (
     <GestureHandlerRootView style={{ flex: 1 }}>
       <SafeAreaProvider>
+        <CartProvider>
         <Stack screenOptions={{ headerShown: false}} />
+        </CartProvider>
       </SafeAreaProvider>
     </GestureHandlerRootView>
   );

app/components/CartItem.tsx

@@ -0,0 +1,107 @@
+import React from 'react';
+import { View, Text, StyleSheet, Image } from 'react-native';
+import COLORS from "@/app/constants/colors";
+import { CartItem as CartItemType } from '@/app/constants/types';
+import QuantityControl from '@/app/components/QuantityControl';
+import Animated, { 
+  useAnimatedStyle, 
+  withTiming,
+  useSharedValue,
+  runOnJS
+} from 'react-native-reanimated';
+
+interface CartItemProps {
+  item: CartItemType;
+  onUpdateQuantity: (id: string, quantity: number) => void;
+}
+
+const CartItem: React.FC<CartItemProps> = ({ item, onUpdateQuantity }) => {
+  const opacity = useSharedValue(1);
+  const scale = useSharedValue(1);
+  
+  const animatedStyle = useAnimatedStyle(() => {
+    return {
+      opacity: opacity.value,
+      transform: [{ scale: scale.value }]
+    };
+  });
+
+  const handleIncrease = () => {
+    scale.value = withTiming(1.02, { duration: 100 }, () => {
+      scale.value = withTiming(1, { duration: 100 });
+    });
+    onUpdateQuantity(item.id, item.quantity + 1);
+  };
+
+  const handleDecrease = () => {
+    if (item.quantity > 0) {
+      scale.value = withTiming(0.98, { duration: 100 }, () => {
+        scale.value = withTiming(1, { duration: 100 });
+      });
+      onUpdateQuantity(item.id, item.quantity - 1);
+    }
+  };
+
+  return (
+    <Animated.View style={[styles.container, animatedStyle]}>
+      <View style={styles.imageContainer}>
+        <Image source={{ uri: item.image }} style={styles.image} />
+      </View>
+      
+      <View style={styles.contentContainer}>
+        <Text style={styles.name}>{item.name}</Text>
+        
+        <View style={styles.controlRow}>
+          <QuantityControl
+            quantity={item.quantity}
+            onIncrease={handleIncrease}
+            onDecrease={handleDecrease}
+          />
+          
+          <Text style={styles.price}>{item.price}{item.priceUnit}</Text>
+        </View>
+      </View>
+    </Animated.View>
+  );
+};
+
+const styles = StyleSheet.create({
+  container: {
+    flexDirection: 'row',
+    backgroundColor: COLORS.secondary,
+    borderRadius: 12,
+    marginBottom: 5,
+    padding: 4,
+  },
+  imageContainer: {
+    width: 80,
+    height: 80,
+    borderRadius: 8,
+    overflow: 'hidden',
+    marginRight: 2,
+  },
+  image: {
+    width: '100%',
+    height: '100%',
+  },
+  contentContainer: {
+    flex: 1,
+    justifyContent: 'center',
+  },
+  name: {
+    fontSize: 16,
+    color: COLORS.text,
+    marginBottom: 5,
+  },
+  controlRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+  },
+  price: {
+    fontSize: 14,
+    color: COLORS.secondary,
+  },
+});
+
+export default CartItem;

app/components/ProductCard.tsx

@@ -1,20 +1,21 @@
 import { View, Text, Image, StyleSheet, TouchableOpacity } from 'react-native';
 import { useRouter } from 'expo-router';
 import { ChevronRight } from 'lucide-react-native';
-import COLORS from "@/app/constants/colors";
+import COLORS from '@/app/constants/colors';
+import { Product } from '../constants/types';
 
 interface ProductCardProps {
   id: string;
-  name: string;
+  productName: string;
   image: string;
   description: string;
-  price: number;
+  price: string;
   inStock?: boolean;
 }
 
 export default function ProductCard({
   id,
-  name,
+  productName,
   image,
   description,
   price,
@@ -22,27 +23,40 @@ export default function ProductCard({
 }: ProductCardProps) {
   const router = useRouter();
 
+
   return (
     <TouchableOpacity
       style={styles.card}
+      onPress={() =>
+        router.push({
+          pathname: '/screens/user/ProductDetailsScreen', // Absolute path for reliability
+          params: { productId: id },
+        })
+      }
     >
-      <Image source={{ uri: image }} style={styles.image} />
+      <Image
+        source={{ uri: image }}
+        style={styles.image}
+        resizeMode="cover"
+        onError={(error) => console.log('Image loading error:', error.nativeEvent.error)}
+      />
       <View style={styles.content}>
         <View>
-          <Text style={styles.title}>{name}</Text>
+          
+          <Text style={styles.title}>{productName}</Text>
           <Text style={styles.blend}>
             {description}
           </Text>
         </View>
         <View style={styles.rightContent}>
-            <ChevronRight size={20} color="#666" />
+          <ChevronRight size={20} color="#666" />
-            <Text style={[styles.stock, { color: inStock ? '#22C55E' : '#EF4444' }]}>
+          <Text style={[styles.stock, { color: inStock ? '#22C55E' : '#EF4444' }]}>
-                {inStock ? 'En Stock' : 'Hors Stock'}
+            {inStock ? 'En Stock' : 'Hors Stock'}
-            </Text>
+          </Text>
-            <View style={styles.priceContainer}>
+          <View style={styles.priceContainer}>
-                <Text style={styles.price}>{price}</Text>
+            <Text style={styles.price}>{price}</Text>
-                <Text style={styles.unit}>TND/kg</Text>
+            <Text style={styles.unit}>TND/kg</Text>
-            </View>
+          </View>
         </View>
       </View>
     </TouchableOpacity>
@@ -70,6 +84,7 @@ const styles = StyleSheet.create({
     width: 75,
     height: 120,
     borderRadius: 8,
+    backgroundColor: '#eee', // Fallback while loading
   },
   content: {
     flex: 1,
@@ -81,7 +96,7 @@ const styles = StyleSheet.create({
   title: {
     fontSize: 17,
     fontWeight: '700',
-    color: '#333',
+    color: '#000',
     marginBottom: 4,
   },
   blend: {
@@ -92,12 +107,12 @@ const styles = StyleSheet.create({
     flex: 1,
     justifyContent: 'space-between',
     alignItems: 'flex-end',
-    height: 110, // Assure un espacement vertical régulier
+    height: 110,
   },
   priceContainer: {
     flexDirection: 'row',
     alignItems: 'baseline',
-},
+  },
   price: {
     fontSize: 18,
     fontWeight: '600',
@@ -111,6 +126,5 @@ const styles = StyleSheet.create({
   },
   stock: {
     fontSize: 12,
-    color: '#22C55E',
   },
 });

app/components/QuantityControl.tsx

@@ -0,0 +1,86 @@
+import React from 'react';
+import { View, Text, TouchableOpacity, StyleSheet, Platform } from 'react-native';
+import COLORS from "@/app/constants/colors";
+import { Minus, Plus } from 'lucide-react-native';
+import Animated, { useAnimatedStyle, withTiming } from 'react-native-reanimated';
+import * as Haptics from 'expo-haptics';
+
+interface QuantityControlProps {
+  quantity: number;
+  onIncrease: () => void;
+  onDecrease: () => void;
+}
+
+const QuantityControl: React.FC<QuantityControlProps> = ({ 
+  quantity, 
+  onIncrease, 
+  onDecrease 
+}) => {
+  const animatedTextStyle = useAnimatedStyle(() => {
+    return {
+      opacity: 1,
+    };
+  });
+
+  const handleIncrease = () => {
+    onIncrease();
+    if (Platform.OS !== 'web') {
+      Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Light);
+    }
+  };
+
+  const handleDecrease = () => {
+    if (quantity > 0) {
+      onDecrease();
+      if (Platform.OS !== 'web') {
+        Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Light);
+      }
+    }
+  };
+
+  return (
+    <View style={styles.container}>
+      <TouchableOpacity
+        style={[styles.button, { opacity: quantity <= 0 ? 0.5 : 1 }]}
+        onPress={handleDecrease}
+        disabled={quantity <= 0}
+      >
+        <Minus size={16} color={COLORS.text} />
+      </TouchableOpacity>
+      
+      <Animated.Text style={[styles.quantity, animatedTextStyle]}>
+        {quantity}
+      </Animated.Text>
+      
+      <TouchableOpacity style={styles.button} onPress={handleIncrease}>
+        <Plus size={16} color={COLORS.text} />
+      </TouchableOpacity>
+    </View>
+  );
+};
+
+const styles = StyleSheet.create({
+  container: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'center',
+    height: 36,
+  },
+  button: {
+    width: 36,
+    height: 36,
+    backgroundColor: COLORS.secondary,
+    justifyContent: 'center',
+    alignItems: 'center',
+    borderRadius: 6,
+  },
+  quantity: {
+    fontSize: 14,
+    color: COLORS.text,
+    paddingHorizontal: 6,
+    minWidth: 40,
+    textAlign: 'center',
+  },
+});
+
+export default QuantityControl;

app/constants/types.ts

@@ -0,0 +1,21 @@
+export  interface Product {
+    id: string;
+    productName: string;
+    image: string;
+    description: string;
+    price: string;
+    inStock: boolean;
+  }
+  export interface CartItem {
+    id: string;
+    name: string;
+    price: number;
+    priceUnit: string;
+    quantity: number;
+    image: string;
+  }
+  
+  export interface CartState {
+    items: CartItem[];
+    total: number;
+  }

app/context/cartContext.tsx

@@ -0,0 +1,59 @@
+// context/CartContext.tsx
+import React, { createContext, useState, useContext, ReactNode } from 'react';
+
+type CartItem = {
+  productName: string;
+  quantity: number;
+};
+
+type CartState = {
+  items: CartItem[];
+  total: number;
+};
+
+type CartContextType = {
+  cart: CartState;
+  addItem: (item: CartItem) => void;
+  clearCart: () => void;
+};
+
+const CartContext = createContext<CartContextType | undefined>(undefined);
+
+export const CartProvider = ({ children }: { children: ReactNode }) => {
+  const [cart, setCart] = useState<CartState>({ items: [], total: 0 });
+
+  const addItem = (item: CartItem) => {
+    setCart(prev => {
+      const existing = prev.items.find(i => i.productName === item.productName);
+      let updatedItems;
+      if (existing) {
+        updatedItems = prev.items.map(i =>
+          i.productName === item.productName
+            ? { ...i, quantity: i.quantity + item.quantity }
+            : i
+        );
+      } else {
+        updatedItems = [...prev.items, item];
+      }
+      const updatedTotal = updatedItems.reduce((sum, i) => sum + i.quantity, 0);
+      return { items: updatedItems, total: updatedTotal };
+    });
+  };
+
+  const clearCart = () => setCart({ items: [], total: 0 });
+
+  return (
+    <CartContext.Provider value={{ cart, addItem, clearCart }}>
+      {children}
+    </CartContext.Provider>
+  );
+};
+
+export const useCart = () => {
+    const context = useContext(CartContext);
+    if (!context) {
+      throw new Error('useCart must be used within a CartProvider');
+    }
+    return context;
+  };
+  

app/screens/auth/SignIn-Screen.tsx

@@ -10,7 +10,6 @@ import COLORS from "@/app/constants/colors";
 
 
 const SignInScreen = () => {
-  const [step, setStep] = useState(1);
   const [form, setForm] = useState({
     email: "",
     password: "",

app/screens/user/CartScreen.tsx

@@ -1,46 +1,131 @@
-import { View, Text, StyleSheet, ScrollView,TouchableOpacity } from 'react-native';
+import React, { useEffect, useState } from 'react';
-import { SafeAreaView } from 'react-native-safe-area-context';
+import { useRouter } from 'expo-router';
-import { ArrowLeft } from 'lucide-react-native';
+import { View, Text, Button, Alert, StyleSheet } from 'react-native';
-import { router } from "expo-router";
+import { getAuth } from 'firebase/auth';
+import { collection, addDoc } from 'firebase/firestore'; // Make sure these are imported
+import { db } from '@/firebase/config'; // Ensure this path is correct
+import { useCart } from '@/app/context/cartContext';
 
+const CartScreen = () => {
+  const { cart, clearCart } = useCart();
+  const auth = getAuth();
+  const [isAuthenticated, setIsAuthenticated] = useState<boolean>(false);
+  const router = useRouter();
+
+  // Check if the user is logged in when the component mounts
+  useEffect(() => {
+    const user = auth.currentUser;
+    if (user) {
+      setIsAuthenticated(true);
+    } else {
+      setIsAuthenticated(false);
+      router.push('../screens/auth/SignInScreen'); // Redirect to sign-in screen if not logged in
+    }
+  }, [auth, router]);
+
+  const handleConfirmOrder = async () => {
+    if (!isAuthenticated) {
+      Alert.alert('Erreur', 'Utilisateur non connecté.');
+      return;
+    }
+
+    if (cart.total <= 0) {
+      Alert.alert('Panier vide', 'Veuillez ajouter des produits à votre panier');
+      return;
+    }
+
+    try {
+      const userId = auth.currentUser?.uid;
+      if (!userId) {
+        Alert.alert('Erreur', 'Utilisateur non connecté.');
+        return;
+      }
+
+      const orderData: any = {
+        userId,
+        status: 'En attente',
+      };
+
+      cart.items.forEach((item, index) => {
+        orderData[`item${index + 1}`] = [item.quantity, item.productName];
+      });
+
+      await addDoc(collection(db, 'orders'), orderData);
+
+      Alert.alert('Commande confirmée', 'Votre commande a été enregistrée.');
+      clearCart();
+    } catch (error) {
+      console.error('Erreur de commande', error);
+      Alert.alert('Erreur', "Impossible d'enregistrer la commande.");
+    }
+  };
+
+  if (!isAuthenticated) {
+    return <Text>Chargement...</Text>; // Loading state while checking authentication
+  }
 
-export default function CartScreen() {
   return (
-    <SafeAreaView style={styles.container}>
+    <View style={styles.container}>
-      <View style={styles.header}>
+      <Text style={styles.title}>Votre Panier</Text>
-        <TouchableOpacity style={styles.backButton} onPress={() => router.back()}>
+
-            <ArrowLeft size={24} color="#666" />
+      {cart.items.length === 0 ? (
-        </TouchableOpacity>
+        <Text style={styles.empty}>Votre panier est vide.</Text>
-        <Text style={styles.headerTitle}>Mon Panier</Text>
+      ) : (
+        cart.items.map((item, index) => (
+          <View key={index} style={styles.itemContainer}>
+            <Text style={styles.itemText}>
+              {item.productName} - Quantité : {item.quantity}
+            </Text>
+          </View>
+        ))
+      )}
+
+      {cart.items.length > 0 && (
+        <View style={styles.buttonContainer}>
+          <Button title="Confirmer la commande" onPress={handleConfirmOrder} color="#8B4513" />
+          <View style={{ marginTop: 10 }}>
+            <Button title="Vider le panier" onPress={clearCart} color="#A52A2A" />
+          </View>
         </View>
-    </SafeAreaView>
+      )}
+    </View>
   );
-}
+};
 
 const styles = StyleSheet.create({
   container: {
-    flex: 1,
+    padding: 20,
-    backgroundColor: '#fff',
+    backgroundColor: '#FFF',
+    flexGrow: 1,
   },
-  header: {
+  title: {
-    height: 60,
+    fontSize: 22,
-    justifyContent: 'center',
+    fontWeight: 'bold',
-    alignItems: 'center',
+    marginBottom: 15,
-    position: 'relative',
+    textAlign: 'center',
-    backgroundColor: '#fff',
+    color: '#5A3E36',
-    borderBottomWidth: 1,
-    borderBottomColor: '#eee',
-    marginTop:5,
   },
-  backButton: {
+  empty: {
-    position: 'absolute',
+    fontSize: 16,
-    left: 20,
+    color: '#777',
-    top: '50%',
+    textAlign: 'center',
-    transform: [{ translateY: -12 }],
+    marginTop: 50,
   },
-  headerTitle: {
+  itemContainer: {
-    fontSize: 20,
+    backgroundColor: '#F5F5DC',
-    fontWeight: '600',
+    padding: 15,
+    marginBottom: 10,
+    borderRadius: 10,
+    borderColor: '#DDD',
+    borderWidth: 1,
+  },
+  itemText: {
+    fontSize: 16,
     color: '#333',
   },
-});
+  buttonContainer: {
+    marginTop: 30,
+  },
+});
+
+export default CartScreen;

app/screens/user/GrainsScreen.tsx

@@ -1,47 +1,33 @@
-import { View, Text, StyleSheet, ScrollView,TouchableOpacity } from 'react-native';
+import { View, Text, StyleSheet, ScrollView, TouchableOpacity } from 'react-native';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { ArrowLeft } from 'lucide-react-native';
 import { router } from "expo-router";
 import ProductCard from '../../components/ProductCard';
 import COLORS from '@/app/constants/colors';
-
+import { collection, getDocs } from 'firebase/firestore';
-const products = [
+import { useEffect, useState } from 'react';
-  {
+import { db } from '@/firebase/config'; 
-    id: '1',
+import { Product } from '@/app/constants/types';  
-    name: 'Café Brix Premium',
-    image: 'https://images.unsplash.com/photo-1559056199-641a0ac8b55e?w=200&h=300&fit=crop',
-    description: '50% robusta • 50% arabica',
-    price: 10,
-    inStock: true,
-  },
-  {
-    id: '2',
-    name: 'Café Brix Gold',
-    image: 'https://images.unsplash.com/photo-1587734361993-0275d60eb3d0?w=200&h=300&fit=crop',
-    description: '30% robusta • 70% arabica',
-    price: 12,
-    inStock: false,
-  },
-  {
-    id: '3',
-    name: 'Café Brix Prestige',
-    image: 'https://images.unsplash.com/photo-1559525839-b184a4d698c7?w=200&h=300&fit=crop',
-    description: '70% robusta • 30% arabica',
-    price: 11,
-    inStock: true,
-  },
-  {
-    id: '4',
-    name: 'Café Brix Turc',
-    image: 'https://images.unsplash.com/photo-1562447457-579fc34967fb?w=200&h=300&fit=crop',
-    description: '50% robusta • 50% arabica',
-    price: 10,
-    inStock: true,
-  },
-  
-];
 
 export default function GrainsScreen() {
+  const [products, setProducts] = useState<Product[]>([]); 
+
+  useEffect(() => {
+    const fetchProducts = async () => {
+      try {
+        const querySnapshot = await getDocs(collection(db, 'products'));
+        const items: Product[] = querySnapshot.docs.map(doc => ({
+          id: doc.id,
+          ...(doc.data() as Omit<Product, 'id'>), 
+        }));
+        setProducts(items);
+      } catch (error) {
+        console.error("Erreur lors de la récupération des produits :", error);
+      }
+    };
+    fetchProducts();
+  }, []);
+
   return (
     <SafeAreaView style={styles.container}>
       <View style={styles.header}>
@@ -49,7 +35,7 @@ export default function GrainsScreen() {
             <ArrowLeft size={24} color="#666" />
         </TouchableOpacity>
         <Text style={styles.headerTitle}>Grains de café</Text>
-        </View>
+      </View>
 
       <ScrollView style={styles.content}>
         {products.map((product) => (
@@ -73,7 +59,7 @@ const styles = StyleSheet.create({
     backgroundColor: '#fff',
     borderBottomWidth: 1,
     borderBottomColor: '#eee',
-    marginTop:5,
+    marginTop: 5,
   },
   backButton: {
     position: 'absolute',
@@ -88,7 +74,7 @@ const styles = StyleSheet.create({
   },
   content: {
     flex: 1,
-    padding: 8,
+    padding: 28,
-    backgroundColor:COLORS.background_user ,
+    backgroundColor: COLORS.background_user,
   },
-});
+});

app/screens/user/ProductDetailsScreen.tsx

@@ -0,0 +1,291 @@
+import React, { useEffect, useState } from 'react';
+import { View, Text, StyleSheet, Image, TouchableOpacity, ActivityIndicator,Alert } from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
+import { useLocalSearchParams, useRouter } from 'expo-router';
+import { ChevronLeft, Minus, Plus } from 'lucide-react-native';
+import { doc, getDoc } from 'firebase/firestore';
+import { db } from '@/firebase/config';
+import { useCart } from '@/app/context/cartContext';
+import { Product } from '@/app/constants/types';
+
+export default function ProductScreen() {
+  const { productId } = useLocalSearchParams();
+  const router = useRouter();
+  const [product, setProduct] = useState<Product | null>(null);
+  const [quantity, setQuantity] = useState(1);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  
+  // Cart items state
+  const [cartItems, setCartItems] = useState<{ productName: string; quantity: number }[]>([]);
+
+  const fetchProductDetails = async () => {
+    if (!productId) {
+      setError('Aucun ID de produit fourni.');
+      setLoading(false);
+      return;
+    }
+
+    try {
+      setLoading(true);
+      setError(null);
+      const productDoc = await getDoc(doc(db, 'products', productId as string));
+      if (productDoc.exists()) {
+        setProduct({
+          id: productDoc.id,
+          ...(productDoc.data() as Omit<Product, 'id'>),
+        });
+        setQuantity(1);
+      } else {
+        setError('Produit non trouvé.');
+      }
+    } catch (error) {
+      console.error('Erreur lors de la récupération du produit:', error);
+      setError('Impossible de charger le produit. Veuillez réessayer.');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  useEffect(() => {
+    fetchProductDetails();
+  }, [productId]);
+
+  // Add item to cart
+const { addItem } = useCart();
+
+const handleAddToCart = () => {
+    if (!product) return;
+
+    addItem({
+        productName: product?.productName,
+        quantity: quantity,
+    });
+
+  Alert.alert('Ajouté', `${quantity} ${product.productName} ajouté au panier`);
+};
+
+
+  return (
+    <SafeAreaView style={styles.container}>
+      {/* Header */}
+      <View style={styles.header}>
+        <TouchableOpacity onPress={() => router.back()}>
+          <ChevronLeft size={24} color="#333" />
+        </TouchableOpacity>
+        <Text style={styles.title}>{product?.productName || 'Détails du produit'}</Text>
+      </View>
+
+      {/* Content */}
+      {loading ? (
+        <View style={styles.loadingContainer}>
+          <ActivityIndicator size="large" color="#B07B4F" />
+          <Text style={styles.loadingText}>Chargement...</Text>
+        </View>
+      ) : error ? (
+        <View style={styles.errorContainer}>
+          <Text style={styles.errorText}>{error}</Text>
+          <TouchableOpacity
+            style={styles.retryButton}
+            onPress={() => {
+              setLoading(true);
+              fetchProductDetails();
+            }}
+          >
+            <Text style={styles.retryButtonText}>Réessayer</Text>
+          </TouchableOpacity>
+        </View>
+      ) : !product ? (
+        <View style={styles.errorContainer}>
+          <Text style={styles.errorText}>Produit non trouvé.</Text>
+        </View>
+      ) : (
+        <>
+          <View style={styles.content}>
+            <View style={styles.imageContainer}>
+              <Image
+                source={{ uri: product.image }}
+                style={styles.image}
+                resizeMode="cover"
+                onError={(e) => console.log('Image error:', e.nativeEvent.error)}
+              />
+              {product.inStock && <Text style={styles.stock}>En Stock</Text>}
+            </View>
+
+            <View style={styles.details}>
+              <Text style={styles.name}>{product.productName}</Text>
+              <Text style={styles.blend}>{product.description}</Text>
+
+              <View style={styles.quantityContainer}>
+                <Text style={styles.quantityLabel}>Quantité</Text>
+                <View style={styles.quantityControls}>
+                  <TouchableOpacity
+                    style={styles.quantityButton}
+                    onPress={() => setQuantity(Math.max(1, quantity - 1))}
+                  >
+                    <Minus size={20} color="#666" />
+                  </TouchableOpacity>
+                  <Text style={styles.quantity}>{quantity}</Text>
+                  <TouchableOpacity
+                    style={styles.quantityButton}
+                    onPress={() => setQuantity(quantity + 1)}
+                  >
+                    <Plus size={20} color="#666" />
+                  </TouchableOpacity>
+                </View>
+              </View>
+            </View>
+          </View>
+
+          <View style={styles.footer}>
+            <TouchableOpacity style={styles.addButton} onPress={handleAddToCart}>
+              <Text style={styles.addButtonText}>Ajouter au panier</Text>
+            </TouchableOpacity>
+          </View>
+        </>
+      )}
+    </SafeAreaView>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: '#F8F9FA',
+  },
+  header: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    padding: 20,
+    backgroundColor: '#fff',
+    borderBottomWidth: 1,
+    borderBottomColor: '#eee',
+  },
+  title: {
+    fontSize: 20,
+    fontWeight: '600',
+    color: '#333',
+    marginLeft: 12,
+  },
+  content: {
+    flex: 1,
+    padding: 20,
+  },
+  imageContainer: {
+    position: 'relative',
+    backgroundColor: '#fff',
+    borderRadius: 16,
+    padding: 20,
+    alignItems: 'center',
+    marginBottom: 24,
+  },
+  image: {
+    width: 200,
+    height: 300,
+    borderRadius: 12,
+    backgroundColor: '#eee', // Fallback while loading
+  },
+  stock: {
+    position: 'absolute',
+    top: 12,
+    right: 12,
+    backgroundColor: '#22C55E',
+    color: '#fff',
+    fontSize: 12,
+    paddingHorizontal: 8,
+    paddingVertical: 4,
+    borderRadius: 4,
+  },
+  details: {
+    backgroundColor: '#fff',
+    borderRadius: 16,
+    padding: 20,
+  },
+  name: {
+    fontSize: 24,
+    fontWeight: '600',
+    color: '#333',
+    marginBottom: 8,
+  },
+  blend: {
+    fontSize: 16,
+    color: '#666',
+    marginBottom: 24,
+  },
+  quantityContainer: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+  },
+  quantityLabel: {
+    fontSize: 16,
+    color: '#333',
+  },
+  quantityControls: {
+    flexDirection: 'row',
+    alignItems: 'center',
+  },
+  quantityButton: {
+    width: 40,
+    height: 40,
+    backgroundColor: '#F1F3F5',
+    borderRadius: 20,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  quantity: {
+    fontSize: 16,
+    fontWeight: '600',
+    marginHorizontal: 16,
+  },
+  footer: {
+    padding: 20,
+    backgroundColor: '#fff',
+    borderTopWidth: 1,
+    borderTopColor: '#eee',
+  },
+  addButton: {
+    backgroundColor: '#B07B4F',
+    borderRadius: 12,
+    padding: 16,
+    alignItems: 'center',
+  },
+  addButtonText: {
+    color: '#fff',
+    fontSize: 16,
+    fontWeight: '600',
+  },
+  loadingContainer: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  loadingText: {
+    marginTop: 10,
+    fontSize: 16,
+    color: '#666',
+  },
+  errorContainer: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+    padding: 20,
+  },
+  errorText: {
+    fontSize: 16,
+    color: '#EF4444',
+    textAlign: 'center',
+    marginBottom: 20,
+  },
+  retryButton: {
+    backgroundColor: '#B07B4F',
+    paddingVertical: 10,
+    paddingHorizontal: 20,
+    borderRadius: 8,
+  },
+  retryButtonText: {
+    color: '#fff',
+    fontSize: 16,
+    fontWeight: '600',
+  },
+});

app/screens/user/UserHomeScreen.tsx

@@ -1,7 +1,9 @@
-import { View, Text, StyleSheet, ScrollView, Image,Button } from 'react-native';
+import { View, Text, StyleSheet, Image, } from 'react-native';
-import { SafeAreaView } from 'react-native-safe-area-context';
 import { TouchableOpacity } from 'react-native-gesture-handler';
 import { useRouter } from 'expo-router';
+import { BellRing } from 'lucide-react-native';
+import COLORS from '@/app/constants/colors';
+
 
 const UserHomeScreen = () => {
   const router = useRouter();
@@ -13,6 +15,11 @@ const UserHomeScreen = () => {
             <Text style={styles.welcome}>Bienvenue,</Text>
             <Text style={styles.shopName}>Nom de Café</Text>
           </View>
+          <View style={styles.notification}>
+            <TouchableOpacity>
+            <BellRing size={24} color="#000" />
+            </TouchableOpacity>
+          </View>
         </View>
 
         <Text style={styles.sectionTitle}>Nos Produits</Text>
@@ -23,14 +30,14 @@ const UserHomeScreen = () => {
             onPress={() => router.push('/screens/user/GrainsScreen')}>
 
             <Image
-              source={require('../../../assets/images/coffee_cup.jpg')} style={styles.categoryImage}
+              source={require('../../../assets/images/grains.jpg')} style={styles.categoryImage}
             />
             <Text style={styles.categoryTitle}>Grains de café</Text>
           </TouchableOpacity>
 
           <TouchableOpacity style={styles.categoryCard}>
             <Image
-                source={require('../../../assets/images/coffee_cup.jpg')} style={styles.categoryImage}
+                source={require('../../../assets/images/material.jpg')} style={styles.categoryImage}
             />
             <Text style={styles.categoryTitle}>Matériels</Text>
           </TouchableOpacity>
@@ -48,34 +55,50 @@ const styles = StyleSheet.create({
     flexDirection: 'row',
     justifyContent: 'space-between',
     alignItems: 'center',
-    padding: 20,
+    padding: 15,
+    marginTop:26,
+    borderBottomWidth:0.2,
+    borderColor:'#999',
   },
   welcome: {
     fontSize: 16,
     color: '#666',
   },
   shopName: {
-    fontSize: 24,
-    fontWeight: '600',
-    color: '#333',
-  },
-  avatar: {
-    width: 40,
-    height: 40,
-    borderRadius: 20,
-  },
-  sectionTitle: {
     fontSize: 20,
-    fontWeight: '600',
+    fontWeight: '700',
     color: '#333',
-    marginHorizontal: 20,
+  },
-    marginBottom: 16,
+  notification:{
+    backgroundColor:COLORS.secondary,
+    padding:8,
+    borderRadius:8,
+    borderColor:'#000',
+    shadowColor: '#000',
+    shadowOffset: {
+      width: 0,
+      height: 5,
+    },
+    shadowOpacity: 0.2,
+    shadowRadius: 10,
+    elevation: 2,
+  },
+  
+  sectionTitle: {
+    fontSize: 26,
+    fontWeight: '900',
+    color: '#666',
+   alignSelf:'center',
+   marginTop:10,
+
   },
   categories: {
-    padding: 20,
+    flex: 1,
+    padding: 15,
+    justifyContent: 'space-evenly',
   },
   categoryCard: {
-    backgroundColor: '#fff',
+    backgroundColor: COLORS.secondary,
     borderRadius: 16,
     marginBottom: 16,
     overflow: 'hidden',
@@ -89,13 +112,17 @@ const styles = StyleSheet.create({
     elevation: 3,
   },
   categoryImage: {
-    width: '100%',
+    width: '80%',
+    alignSelf: 'center',
     height: 160,
+    marginTop: 15,
+    borderRadius:16,
   },
   categoryTitle: {
-    fontSize: 16,
+    fontSize: 20,
-    fontWeight: '600',
+    alignSelf:'center',
-    color: '#333',
+    fontWeight: '800',
+    color: '#000',
     padding: 16,
   },
 });

app/screens/user/_layout.tsx

@@ -43,7 +43,13 @@ export default function UserLayout() {
         <Tabs.Screen
         name="GrainsScreen"
         options={{
-          href: null, // 👈 not shown in bottom nav, but still navigable
+          href: null,
+        }}
+      />
+      <Tabs.Screen
+        name="ProductDetailsScreen"
+        options={{
+          href: null,
         }}
       />
 

app/utils/cartUtils.tsx

@@ -0,0 +1,22 @@
+import { CartItem } from '@/app/constants/types';
+
+export const calculateTotal = (items: CartItem[]): number => {
+  return items.reduce((total, item) => {
+    return total + item.price * item.quantity;
+  }, 0);
+};
+
+export const updateItemQuantity = (
+  items: CartItem[],
+  itemId: string,
+  newQuantity: number
+): CartItem[] => {
+  // Don't allow negative quantities
+  if (newQuantity < 0) {
+    return items;
+  }
+
+  return items.map((item) =>
+    item.id === itemId ? { ...item, quantity: newQuantity } : item
+  );
+};