payment handler

lib/src/ui/payment/payment_webView.dart

@@ -1,3 +1,36 @@
+// import 'package:flutter/material.dart';
+// import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+
+// class PaymentWebView extends StatefulWidget {
+//   final String paymentUrl;
+
+//   PaymentWebView({required this.paymentUrl});
+
+//   @override
+//   _PaymentWebViewState createState() => _PaymentWebViewState();
+// }
+
+// class _PaymentWebViewState extends State<PaymentWebView> {
+//   InAppWebViewController? webViewController;
+
+//   @override
+//   Widget build(BuildContext context) {
+//     return Scaffold(
+//       appBar: AppBar(title: Text("Complete Your Payment")),
+//       body: InAppWebView(
+//         initialUrlRequest: URLRequest(url: WebUri.uri(Uri.parse(widget.paymentUrl))),
+//         onWebViewCreated: (controller)
+//          {
+//           webViewController = controller;
+//          },
+//         onLoadStop: (controller, url) async
+//          {
+//           print("Payment page loaded: $url");
+//         },
+//       ),
+//     );
+//   }
+// }
 import 'package:flutter/material.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 
@@ -12,19 +45,62 @@ class PaymentWebView extends StatefulWidget {
 
 class _PaymentWebViewState extends State<PaymentWebView> {
   InAppWebViewController? webViewController;
+  bool isErrorPage = false; // Track error state
 
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text("Complete Your Payment")),
-      body: InAppWebView(
-        initialUrlRequest: URLRequest(url: WebUri.uri(Uri.parse(widget.paymentUrl))),
-        onWebViewCreated: (controller) {
-          webViewController = controller;
-        },
-        onLoadStop: (controller, url) async {
-          print("Payment page loaded: $url");
-        },
+      body: Stack(
+        children: [
+          Visibility(
+            visible: !isErrorPage, // Show WebView only if there's no error
+            child: InAppWebView(
+              initialUrlRequest:
+                  URLRequest(url: WebUri.uri(Uri.parse(widget.paymentUrl))),
+              onWebViewCreated: (controller) {
+                webViewController = controller;
+              },
+              onLoadStop: (controller, url) async {
+                print("Payment page loaded: $url");
+              },
+              onReceivedHttpError: (controller, request, response) 
+              {
+                if (response.statusCode == 404) 
+                {
+                  setState(() {
+                    isErrorPage = true;
+                  });
+                }
+              },
+            ),
+          ),
+          if (isErrorPage) _buildErrorPage(context), // Show custom error page
+        ],
+      ),
+    );
+  }
+
+  Widget _buildErrorPage(BuildContext context) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(Icons.error_outline, color: Colors.red, size: 80),
+          SizedBox(height: 10),
+          Text("Payment Failed",
+              style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+          SizedBox(height: 10),
+          Text("Something went wrong. Please try again.",
+              textAlign: TextAlign.center),
+          SizedBox(height: 20),
+          ElevatedButton(
+            onPressed: () {
+              Navigator.pop(context); // Navigate back to previous screen
+            },
+            child: Text("Go Back"),
+          ),
+        ],
       ),
     );
   }