Add glitchtip for centralized error logging

lib/views/product_form_view.dart

@@ -6,6 +6,7 @@ import 'package:image_picker/image_picker.dart';
 import 'package:path/path.dart' as path;
 import 'package:path_provider/path_provider.dart';
 import 'package:provider/provider.dart';
+import 'package:sentry_flutter/sentry_flutter.dart';
 
 import '../models/product.dart';
 import '../viewmodels/product_list_view_model.dart';
@@ -52,30 +53,39 @@ class _ProductFormViewState extends State<ProductFormView> {
       return;
     }
 
-    final viewModel = context.read<ProductListViewModel>();
-    final product = await viewModel.getProductById(widget.productId!);
+    try {
+      final viewModel = context.read<ProductListViewModel>();
+      final product = await viewModel.getProductById(widget.productId!);
 
-    if (!mounted) return;
+      if (!mounted) return;
 
-    if (product == null) {
+      if (product == null) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(const SnackBar(content: Text('Product not found.')));
+
+        context.go('/products');
+        return;
+      }
+
+      _existingProduct = product;
+      _nameController.text = product.name;
+      _selectedCategory = product.category;
+      _priceController.text = (product.priceInCents / 100).toStringAsFixed(2);
+      _stockController.text = product.stockQuantity.toString();
+      _lowStockController.text = product.lowStockThreshold.toString();
+      _imagePath = product.imagePath;
+      _hasImage = product.imagePath != null && product.imagePath!.isNotEmpty;
+
+      setState(() => _isLoading = false);
+    } catch (e, stack) {
+      Sentry.captureException(e, stackTrace: stack);
+      if (!mounted) return;
       ScaffoldMessenger.of(
         context,
-      ).showSnackBar(const SnackBar(content: Text('Product not found.')));
-
+      ).showSnackBar(SnackBar(content: Text('Could not load product: $e')));
       context.go('/products');
-      return;
     }
-
-    _existingProduct = product;
-    _nameController.text = product.name;
-    _selectedCategory = product.category;
-    _priceController.text = (product.priceInCents / 100).toStringAsFixed(2);
-    _stockController.text = product.stockQuantity.toString();
-    _lowStockController.text = product.lowStockThreshold.toString();
-    _imagePath = product.imagePath;
-    _hasImage = product.imagePath != null && product.imagePath!.isNotEmpty;
-
-    setState(() => _isLoading = false);
   }
 
   @override
@@ -159,29 +169,39 @@ class _ProductFormViewState extends State<ProductFormView> {
     final name = _nameController.text.trim();
     final category = _selectedCategory!;
     final priceInCents = _parsePriceToCents(_priceController.text);
-    final stockQuantity = int.parse(_stockController.text);
-    final lowStockThreshold = int.parse(_lowStockController.text);
+    final stockQuantity = int.tryParse(_stockController.text) ?? 0;
+    final lowStockThreshold = int.tryParse(_lowStockController.text) ?? 0;
 
-    if (widget.isEditing) {
-      final updatedProduct = _existingProduct!.copyWith(
-        name: name,
-        category: category,
-        priceInCents: priceInCents,
-        stockQuantity: stockQuantity,
-        lowStockThreshold: lowStockThreshold,
-        imagePath: _imagePath,
-      );
+    try {
+      if (widget.isEditing) {
+        final updatedProduct = _existingProduct!.copyWith(
+          name: name,
+          category: category,
+          priceInCents: priceInCents,
+          stockQuantity: stockQuantity,
+          lowStockThreshold: lowStockThreshold,
+          imagePath: _imagePath,
+        );
 
-      await viewModel.updateProduct(updatedProduct);
-    } else {
-      await viewModel.addProduct(
-        name: name,
-        category: category,
-        priceInCents: priceInCents,
-        stockQuantity: stockQuantity,
-        lowStockThreshold: lowStockThreshold,
-        imagePath: _imagePath,
+        await viewModel.updateProduct(updatedProduct);
+      } else {
+        await viewModel.addProduct(
+          name: name,
+          category: category,
+          priceInCents: priceInCents,
+          stockQuantity: stockQuantity,
+          lowStockThreshold: lowStockThreshold,
+          imagePath: _imagePath,
+        );
+      }
+    } catch (e, stack) {
+      Sentry.captureException(e, stackTrace: stack);
+      if (!mounted) return;
+      setState(() => _isSaving = false);
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Could not save product: $e')),
       );
+      return;
     }
 
     if (!mounted) return;
@@ -218,7 +238,17 @@ class _ProductFormViewState extends State<ProductFormView> {
     if (confirmed != true) return;
 
     final viewModel = context.read<ProductListViewModel>();
-    await viewModel.deleteProduct(widget.productId!);
+
+    try {
+      await viewModel.deleteProduct(widget.productId!);
+    } catch (e, stack) {
+      Sentry.captureException(e, stackTrace: stack);
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('Could not delete product: $e')),
+      );
+      return;
+    }
 
     if (!mounted) return;