feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/client-app/lib/features/invoice/data/models/invoice_decline_model.dart

@@ -0,0 +1,24 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'invoice_decline_model.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class InvoiceDeclineModel{
+  String id;
+  String? reason;
+  String? details;
+  String? supportNote;
+
+  InvoiceDeclineModel({
+    required this.id,
+    required this.reason,
+    this.details,
+    this.supportNote,
+  });
+factory InvoiceDeclineModel.fromJson(Map<String, dynamic> json) {
+    return _$InvoiceDeclineModelFromJson(json);
+  }
+
+Map<String, dynamic> toJson() => _$InvoiceDeclineModelToJson(this);
+
+}

mobile-apps/client-app/lib/features/invoice/data/models/invoice_item_model.dart

@@ -0,0 +1,35 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:krow/core/data/models/shift/event_shift_position_model.dart';
+import 'package:krow/core/data/models/staff/staff_model.dart';
+import 'package:krow/core/entity/staff_contact_entity.dart';
+import 'package:krow/features/events/presentation/event_details/widgets/role/asigned_staff.dart';
+
+part 'invoice_item_model.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class InvoiceItemModel {
+  final String id;
+  final StaffModel? staff;
+  final EventShiftPositionModel? position;
+  final double? workHours;
+  final double? rate;
+  final double? addonsAmount;
+  final double? workAmount;
+  final double? totalAmount;
+
+  InvoiceItemModel(
+      {required this.id,
+      required this.staff,
+      required this.position,
+      required this.workHours,
+      required this.rate,
+      required this.addonsAmount,
+      required this.workAmount,
+      required this.totalAmount});
+
+  factory InvoiceItemModel.fromJson(Map<String, dynamic> json) {
+    return _$InvoiceItemModelFromJson(json);
+  }
+
+  Map<String, dynamic> toJson() => _$InvoiceItemModelToJson(this);
+}

mobile-apps/client-app/lib/features/invoice/data/models/invoice_model.dart

@@ -0,0 +1,75 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:krow/core/data/models/event/business_model.dart';
+import 'package:krow/core/data/models/event/event_model.dart';
+import 'package:krow/features/invoice/data/models/invoice_decline_model.dart';
+import 'package:krow/features/invoice/data/models/invoice_item_model.dart';
+
+part 'invoice_model.g.dart';
+
+enum InvoiceStatus { open, disputed, resolved, paid, overdue, verified }
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class InvoiceModel {
+  final String id;
+  final InvoiceStatus status;
+  final BusinessModel? business;
+  final EventModel? event;
+  final String? contractType;
+  final String? contractValue;
+  final String? dueAt;
+  final double? total;
+  final double? addonsAmount;
+  final double? workAmount;
+  final List<InvoiceItemModel>? items;
+  final InvoiceDeclineModel? dispute;
+
+  factory InvoiceModel.fromJson(Map<String, dynamic> json) {
+    return _$InvoiceModelFromJson(json);
+  }
+
+  InvoiceModel(
+      {required this.id,
+      required this.status,
+      required this.business,
+      required this.event,
+      required this.contractType,
+      required this.contractValue,
+      required this.total,
+      required this.addonsAmount,
+      required this.dueAt,
+      required this.workAmount,
+      required this.items,
+      required this.dispute});
+
+  Map<String, dynamic> toJson() => _$InvoiceModelToJson(this);
+
+  copyWith({
+    String? id,
+    InvoiceStatus? status,
+    BusinessModel? business,
+    EventModel? event,
+    String? contractType,
+    String? contractValue,
+    String? dueAt,
+    double? total,
+    double? addonsAmount,
+    double? workAmount,
+    List<InvoiceItemModel>? items,
+    InvoiceDeclineModel? dispute,
+  }) {
+    return InvoiceModel(
+      id: id ?? this.id,
+      status: status ?? this.status,
+      business: business ?? this.business,
+      event: event ?? this.event,
+      contractType: contractType ?? this.contractType,
+      contractValue: contractValue ?? this.contractValue,
+      total: total ?? this.total,
+      addonsAmount: addonsAmount ?? this.addonsAmount,
+      workAmount: workAmount ?? this.workAmount,
+      items: items ?? this.items,
+      dueAt: dueAt ?? this.dueAt,
+      dispute: dispute ?? this.dispute,
+    );
+  }
+}