implemented TPIN and quick pay within bank

lib/features/fund_transfer/screens/transaction_pin_screen.dart

@@ -1,9 +1,16 @@
 import 'package:flutter/material.dart';
+import 'package:kmobile/api/services/auth_service.dart';
+import 'package:kmobile/api/services/payment_service.dart';
+import 'package:kmobile/data/models/transfer.dart';
+import 'package:kmobile/di/injection.dart';
+import 'package:kmobile/features/fund_transfer/screens/payment_animation.dart';
+import 'package:kmobile/features/fund_transfer/screens/tpin_prompt_screen.dart';
 import 'package:kmobile/features/fund_transfer/screens/transaction_success_screen.dart';
 import 'package:material_symbols_icons/material_symbols_icons.dart';
 
 class TransactionPinScreen extends StatefulWidget {
-  const TransactionPinScreen({super.key});
+  final Transfer transactionData;
+  const TransactionPinScreen({super.key, required this.transactionData});
 
   @override
   State<TransactionPinScreen> createState() => _TransactionPinScreen();
@@ -11,6 +18,38 @@ class TransactionPinScreen extends StatefulWidget {
 
 class _TransactionPinScreen extends State<TransactionPinScreen> {
   final List<String> _pin = [];
+  bool _loading = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _checkIfTpinIsSet();
+  }
+
+  Future<void> _checkIfTpinIsSet() async {
+    setState(() => _loading = true);
+    try {
+      final authService = getIt<AuthService>();
+      final isSet = await authService.checkTpin();
+      if (!isSet && mounted) {
+        Navigator.pushReplacement(
+          context,
+          MaterialPageRoute(
+            builder: (_) => const TpinSetupPromptScreen(),
+          ),
+        );
+      } else if (mounted) {
+        setState(() => _loading = false);
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() => _loading = false);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(content: Text('Failed to check TPIN status')),
+        );
+      }
+    }
+  }
 
   void _onKeyPressed(String value) {
     setState(() {
@@ -43,16 +82,13 @@ class _TransactionPinScreen extends State<TransactionPinScreen> {
   Widget _buildKey(String label, {IconData? icon}) {
     return Expanded(
       child: InkWell(
-        onTap: () {
+        onTap: () async {
           if (label == 'back') {
             _onKeyPressed('back');
           } else if (label == 'done') {
             // Handle submit if needed
             if (_pin.length == 6) {
-              Navigator.push(
-                  context,
-                  MaterialPageRoute(
-                      builder: (context) => const TransactionSuccessScreen()));
+              await sendTransaction();
             } else {
               ScaffoldMessenger.of(context).showSnackBar(
                 const SnackBar(content: Text("Please enter a 6-digit TPIN")),
@@ -90,6 +126,27 @@ class _TransactionPinScreen extends State<TransactionPinScreen> {
     );
   }
 
+  Future<void> sendTransaction() async {
+    final paymentService = getIt<PaymentService>();
+    final transfer = widget.transactionData;
+    transfer.tpin = _pin.join();
+    try {
+      final paymentResponse = paymentService.processQuickPayWithinBank(transfer);
+
+      Navigator.of(context).pushReplacement(
+        MaterialPageRoute(
+          builder: (_) => PaymentAnimationScreen(paymentResponse: paymentResponse)
+        ),
+      );
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(e.toString())),
+        );
+      }
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -105,35 +162,23 @@ class _TransactionPinScreen extends State<TransactionPinScreen> {
           style: TextStyle(color: Colors.black, fontWeight: FontWeight.w500),
         ),
         centerTitle: false,
-        actions: const [
-          Padding(
-            padding: EdgeInsets.only(right: 10.0),
-            child: CircleAvatar(
-              backgroundImage: AssetImage('assets/images/avatar.jpg'),
-              // Replace with your image
-              radius: 20,
-            ),
-          ),
-        ],
       ),
-
       body: Padding(
-        padding: const EdgeInsets.only(bottom: 20.0),
-        child: Column(
-          children: [
-            const Spacer(),
-            const Text(
-              'Enter Your TPIN',
-              style: TextStyle(fontSize: 18),
+              padding: const EdgeInsets.only(bottom: 20.0),
+              child: Column(
+                children: [
+                  const Spacer(),
+                  const Text(
+                    'Enter Your TPIN',
+                    style: TextStyle(fontSize: 18),
+                  ),
+                  const SizedBox(height: 20),
+                  _buildPinIndicators(),
+                  const Spacer(),
+                  _buildKeypad(),
+                ],
+              ),
             ),
-            const SizedBox(height: 20),
-            _buildPinIndicators(),
-            const Spacer(),
-            _buildKeypad(),
-          ],
-        ),
-      ),
     );
   }
-
-}
+}