init

lib/models/bar_tab.dart

@@ -0,0 +1,39 @@
+import 'tab_item.dart';
+
+class BarTab {
+  final String id;
+  final String customerName;
+  final String status;
+  final DateTime openedAt;
+  final DateTime? closedAt;
+  final List<TabItem> items;
+
+  const BarTab({
+    required this.id,
+    required this.customerName,
+    required this.status,
+    required this.openedAt,
+    required this.items,
+    this.closedAt,
+  });
+
+  int get totalInCents {
+    return items.fold<int>(
+      0,
+          (total, item) => total + item.lineTotalInCents,
+    );
+  }
+
+  int get itemCount {
+    return items.fold<int>(
+      0,
+          (total, item) => total + item.quantity,
+    );
+  }
+
+  String get formattedTotal {
+    return '€${(totalInCents / 100).toStringAsFixed(2)}';
+  }
+
+  bool get isOpen => status == 'open';
+}

lib/models/product.dart

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+class Product {
+  final String id;
+  final String name;
+  final String category;
+  final int stockQuantity;
+  final int lowStockThreshold;
+  final int priceInCents;
+  final String? imagePath;
+  final bool active;
+
+  const Product({
+    required this.id,
+    required this.name,
+    required this.category,
+    required this.stockQuantity,
+    required this.lowStockThreshold,
+    required this.priceInCents,
+    this.imagePath,
+    this.active = true,
+  });
+
+  bool get isLowStock => stockQuantity <= lowStockThreshold;
+
+  String get formattedPrice {
+    final euros = priceInCents / 100;
+
+    return '€${euros.toStringAsFixed(2)}';
+  }
+
+  Product copyWith({
+    String? id,
+    String? name,
+    String? category,
+    int? stockQuantity,
+    int? lowStockThreshold,
+    int? priceInCents,
+    String? imagePath,
+    bool? active,
+  }) {
+    return Product(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      category: category ?? this.category,
+      stockQuantity: stockQuantity ?? this.stockQuantity,
+      lowStockThreshold: lowStockThreshold ?? this.lowStockThreshold,
+      priceInCents: priceInCents ?? this.priceInCents,
+      imagePath: imagePath ?? this.imagePath,
+      active: active ?? this.active,
+    );
+  }
+}

lib/models/tab_item.dart

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+class TabItem {
+  final String id;
+  final String tabId;
+  final String productId;
+  final String productName;
+  final int quantity;
+  final int unitPriceInCents;
+
+  const TabItem({
+    required this.id,
+    required this.tabId,
+    required this.productId,
+    required this.productName,
+    required this.quantity,
+    required this.unitPriceInCents,
+  });
+
+  int get lineTotalInCents => quantity * unitPriceInCents;
+
+  String get formattedLineTotal {
+    return '€${(lineTotalInCents / 100).toStringAsFixed(2)}';
+  }
+
+  String get formattedUnitPrice {
+    return '€${(unitPriceInCents / 100).toStringAsFixed(2)}';
+  }
+}