add firebase, add screen flow

lib/features/products/presentation/pages/product_detail_page.dart

@@ -7,9 +7,11 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:go_router/go_router.dart';
+import 'package:worker/core/services/analytics_service.dart';
 import 'package:worker/core/widgets/loading_indicator.dart';
 import 'package:worker/core/constants/ui_constants.dart';
 import 'package:worker/core/theme/colors.dart';
+import 'package:worker/features/cart/presentation/providers/cart_provider.dart';
 import 'package:worker/features/favorites/presentation/providers/favorites_provider.dart';
 import 'package:worker/features/products/domain/entities/product.dart';
 import 'package:worker/features/products/presentation/providers/products_provider.dart';
@@ -154,8 +156,25 @@ class _ProductDetailPageState extends ConsumerState<ProductDetailPage> {
     );
   }
 
-  void _addToCart(Product product) {
-    // TODO: Add to cart logic
+  void _addToCart(Product product) async {
+    // Add to cart via provider
+    await ref.read(cartProvider.notifier).addToCart(
+      product,
+      quantity: _quantity.toDouble(),
+    );
+
+    // Log analytics event
+    await AnalyticsService.logAddToCart(
+      productId: product.productId,
+      productName: product.name,
+      price: product.basePrice,
+      quantity: _quantity,
+      brand: product.itemGroupName,
+    );
+
+    if (!mounted) return;
+
+    ScaffoldMessenger.of(context).clearSnackBars();
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
         content: Text(
@@ -165,7 +184,7 @@ class _ProductDetailPageState extends ConsumerState<ProductDetailPage> {
         action: SnackBarAction(
           label: 'Xem giỏ hàng',
           onPressed: () {
-            // TODO: Navigate to cart
+            context.push('/cart');
           },
         ),
       ),
@@ -245,20 +264,15 @@ class _ProductDetailPageState extends ConsumerState<ProductDetailPage> {
               ),
 
               // Sticky Action Bar
-              Positioned(
-                bottom: 0,
-                left: 0,
-                right: 0,
-                child: StickyActionBar(
-                  quantity: _quantity,
-                  unit: 'm²',
-                  conversionOfSm: product.conversionOfSm,
-                  uomFromIntroAttributes: product.getIntroAttribute('UOM'),
-                  onIncrease: _increaseQuantity,
-                  onDecrease: _decreaseQuantity,
-                  onQuantityChanged: _updateQuantity,
-                  onAddToCart: () => _addToCart(product),
-                ),
+              StickyActionBar(
+                quantity: _quantity,
+                unit: 'm²',
+                conversionOfSm: product.conversionOfSm,
+                uomFromIntroAttributes: product.getIntroAttribute('UOM'),
+                onIncrease: _increaseQuantity,
+                onDecrease: _decreaseQuantity,
+                onQuantityChanged: _updateQuantity,
+                onAddToCart: () => _addToCart(product),
               ),
             ],
           );

lib/features/products/presentation/pages/products_page.dart

@@ -7,6 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:go_router/go_router.dart';
+import 'package:worker/core/services/analytics_service.dart';
 import 'package:worker/core/widgets/loading_indicator.dart';
 import 'package:worker/core/constants/ui_constants.dart';
 import 'package:worker/core/router/app_router.dart';
@@ -44,7 +45,13 @@ class ProductsPage extends ConsumerWidget {
       appBar: AppBar(
         leading: IconButton(
           icon: FaIcon(FontAwesomeIcons.arrowLeft, color: colorScheme.onSurface, size: 20),
-          onPressed: () => context.pop(),
+          onPressed: () {
+            if (context.canPop()) {
+              context.pop();
+            } else {
+              context.go(RouteNames.home);
+            }
+          },
         ),
         title: Text('Sản phẩm', style: TextStyle(color: colorScheme.onSurface)),
         elevation: AppBarSpecs.elevation,
@@ -135,6 +142,14 @@ class ProductsPage extends ConsumerWidget {
                         // Add to cart
                         ref.read(cartProvider.notifier).addToCart(product);
 
+                        AnalyticsService.logAddToCart(
+                          productId: product.productId,
+                          productName: product.name,
+                          price: product.basePrice,
+                          quantity: 1,
+                          brand: product.itemGroupName,
+                        );
+
                         // Show SnackBar with manual dismissal
                         final messenger = ScaffoldMessenger.of(context)
                         ..clearSnackBars();