implemented TPIN and quick pay within bank

lib/data/models/payment_response.dart

@@ -0,0 +1,19 @@
+class PaymentResponse {
+  final bool isSuccess;
+  final DateTime? date;
+  final String? creditedAccount;
+  final String? amount;
+  final String? currency;
+  final String? errorMessage;
+  final String? errorCode;
+
+  PaymentResponse({
+    required this.isSuccess,
+    this.date,
+    this.creditedAccount,
+    this.amount,
+    this.currency,
+    this.errorMessage,
+    this.errorCode,
+  });
+}

lib/data/models/transaction.dart

@@ -2,7 +2,7 @@ class Transaction {
   final String? id;
   final String? name;
   final String? date;
-  final int? amount;
+  final String? amount;
   final String? type;
 
   Transaction({this.id, this.name, this.date, this.amount, this.type});
@@ -21,7 +21,7 @@ class Transaction {
       id: json['id'] as String?,
       name: json['name'] as String?,
       date: json['date'] as String?,
-      amount: json['amount'] as int?,
+      amount: json['amount'] as String?,
       type: json['type'] as String?,
     );
   }

lib/data/models/transfer.dart

@@ -0,0 +1,45 @@
+class Transfer {
+  final String fromAccount;
+  final String toAccount;
+  final String toAccountType;
+  final String amount;
+  String? tpin;
+
+  Transfer({
+    required this.fromAccount,
+    required this.toAccount,
+    required this.toAccountType,
+    required this.amount,
+    this.tpin,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'fromAccount': fromAccount,
+      'toAccount': toAccount,
+      'toAccountType': toAccountType,
+      'amount': amount,
+      'tpin': tpin,
+    };
+  }
+}
+
+class TransferResponse {
+  final String? status;
+  final String? message;
+  final String? error;
+
+  TransferResponse({
+    required this.status,
+    required this.message,
+    required this.error,  
+  });
+
+  factory TransferResponse.fromJson(Map<String, dynamic> json) {
+    return TransferResponse(
+      status: json['status'] as String?,
+      message: json['message'] as String?,
+      error: json['error'] as String?,
+    );
+  }
+}

lib/data/repositories/transaction_repository.dart

@@ -0,0 +1,28 @@
+import 'package:dio/dio.dart';
+import 'package:kmobile/data/models/transaction.dart';
+
+abstract class TransactionRepository {
+  Future<List<Transaction>> fetchTransactions(String accountNo);
+}
+
+class TransactionRepositoryImpl implements TransactionRepository {
+  final Dio _dio;
+  TransactionRepositoryImpl(this._dio);
+
+  @override
+  Future<List<Transaction>> fetchTransactions(String accountNo) async {
+
+    final resp = await _dio.get('/api/transactions/account/$accountNo');
+
+    if (resp.statusCode != 200) {
+      throw Exception(
+        'Error fetching transactions: ${resp.statusCode} ${resp.statusMessage}',
+      );
+    }
+
+    final List<dynamic> data = resp.data as List<dynamic>;
+    return data
+        .map((e) => Transaction.fromJson(e as Map<String, dynamic>))
+        .toList();
+  }
+}

lib/data/repositories/transfer_repository.dart

@@ -0,0 +1,28 @@
+import 'package:kmobile/data/models/transfer.dart';
+import 'package:dio/dio.dart';
+
+
+abstract class TransferRepository {
+  Future<TransferResponse> transfer(Transfer transfer);
+}
+
+class TransferRepositoryImpl implements TransferRepository {
+  final Dio _dio;
+  TransferRepositoryImpl(this._dio);
+
+  @override
+  Future<TransferResponse> transfer(Transfer transfer) async {
+    final resp = await _dio.post(
+      '/api/payment/transfer',
+      data: transfer.toJson(),
+    );
+
+    if (resp.statusCode != 200) {
+      throw Exception(
+        'Error transferring funds: ${resp.statusCode} ${resp.statusMessage}',
+      );
+    }
+
+    return TransferResponse.fromJson(resp.data as Map<String, dynamic>);
+  }
+}