feat: add more detailed history and group per day

lib/models/closed_tab.dart

@@ -9,7 +9,7 @@ class ClosedTab {
   final String originalTabId;
   final String customerName;
   final DateTime closedAt;
-final PaymentMethod paymentMethod;
+  final PaymentMethod paymentMethod;
 
   final List<ClosedTabItem> items;
   const ClosedTab({
@@ -21,10 +21,11 @@ final PaymentMethod paymentMethod;
     required this.items,
   });
 
-  int get itemCount => items.fold(0, (sum, item) => sum + item.quantity);
+  int get itemCount =>
+      items.fold(0, (sum, item) => sum + (item.isRemoved ? 0 : item.quantity));
 
   int get totalInCents =>
-      items.fold(0, (sum, item) => sum + item.quantity * item.unitPriceInCents);
+      items.fold(0, (sum, item) => sum + item.lineTotalInCents);
 
   String get formattedTotal =>
       NumberFormat.simpleCurrency().format(totalInCents / 100);
@@ -44,13 +45,13 @@ final PaymentMethod paymentMethod;
 
   @override
   int get hashCode => Object.hash(
-        id,
-        originalTabId,
-        customerName,
-        closedAt,
-        paymentMethod,
-        Object.hashAll(items),
-      );
+    id,
+    originalTabId,
+    customerName,
+    closedAt,
+    paymentMethod,
+    Object.hashAll(items),
+  );
 }
 
-// _listEquals moved to utils/collection_utils.dart
+// _listEquals moved to utils/collection_utils.dart

lib/models/closed_tab_item.dart

@@ -5,6 +5,8 @@ class ClosedTabItem {
   final String productName;
   final int quantity;
   final int unitPriceInCents;
+  final DateTime? purchasedAt;
+  final DateTime? removedAt;
 
   ClosedTabItem({
     required this.id,
@@ -13,9 +15,13 @@ class ClosedTabItem {
     required this.productName,
     required this.quantity,
     required this.unitPriceInCents,
+    this.purchasedAt,
+    this.removedAt,
   });
 
-  int get lineTotalInCents => quantity * unitPriceInCents;
+  bool get isRemoved => removedAt != null;
+
+  int get lineTotalInCents => isRemoved ? 0 : quantity * unitPriceInCents;
 
   @override
   bool operator ==(Object other) =>
@@ -26,15 +32,19 @@ class ClosedTabItem {
           productId == other.productId &&
           productName == other.productName &&
           quantity == other.quantity &&
-          unitPriceInCents == other.unitPriceInCents;
+          unitPriceInCents == other.unitPriceInCents &&
+          purchasedAt == other.purchasedAt &&
+          removedAt == other.removedAt;
 
   @override
   int get hashCode => Object.hash(
-        id,
-        closedTabId,
-        productId,
-        productName,
-        quantity,
-        unitPriceInCents,
-      );
+    id,
+    closedTabId,
+    productId,
+    productName,
+    quantity,
+    unitPriceInCents,
+    purchasedAt,
+    removedAt,
+  );
 }

lib/models/tab_item.dart

@@ -1,3 +1,6 @@
+import 'tab_item_purchase.dart';
+import '../utils/collection_utils.dart';
+
 class TabItem {
   final String id;
   final String tabId;
@@ -5,6 +8,7 @@ class TabItem {
   final String productName;
   final int quantity;
   final int unitPriceInCents;
+  final List<TabItemPurchase> purchases;
 
   const TabItem({
     required this.id,
@@ -13,6 +17,7 @@ class TabItem {
     required this.productName,
     required this.quantity,
     required this.unitPriceInCents,
+    this.purchases = const [],
   });
 
   int get lineTotalInCents => quantity * unitPriceInCents;
@@ -34,15 +39,17 @@ class TabItem {
           productId == other.productId &&
           productName == other.productName &&
           quantity == other.quantity &&
-          unitPriceInCents == other.unitPriceInCents;
+          unitPriceInCents == other.unitPriceInCents &&
+          listEquals(purchases, other.purchases);
 
   @override
   int get hashCode => Object.hash(
-        id,
-        tabId,
-        productId,
-        productName,
-        quantity,
-        unitPriceInCents,
-      );
+    id,
+    tabId,
+    productId,
+    productName,
+    quantity,
+    unitPriceInCents,
+    Object.hashAll(purchases),
+  );
 }

lib/models/tab_item_purchase.dart

@@ -0,0 +1,27 @@
+class TabItemPurchase {
+  final String id;
+  final String tabItemId;
+  final DateTime purchasedAt;
+  final DateTime? removedAt;
+
+  const TabItemPurchase({
+    required this.id,
+    required this.tabItemId,
+    required this.purchasedAt,
+    this.removedAt,
+  });
+
+  bool get isRemoved => removedAt != null;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is TabItemPurchase &&
+          id == other.id &&
+          tabItemId == other.tabItemId &&
+          purchasedAt == other.purchasedAt &&
+          removedAt == other.removedAt;
+
+  @override
+  int get hashCode => Object.hash(id, tabItemId, purchasedAt, removedAt);
+}