112 lines
3.4 KiB
Dart
112 lines
3.4 KiB
Dart
import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:go_router/go_router.dart';
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import 'package:provider/provider.dart';
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import 'package:qpay/screens/gateway/gateway_controller.dart';
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import 'package:qpay/screens/transaction_controller.dart';
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import 'package:qpay/widgets/step_loading_widget.dart';
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import 'package:qpay/browser.dart';
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class PollScreen extends StatefulWidget {
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final String? transactionId;
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const PollScreen({super.key, this.transactionId});
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@override
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State<PollScreen> createState() => _PollScreenState();
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}
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class _PollScreenState extends State<PollScreen> {
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late GatewayController controller;
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late TransactionController transactionController;
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@override
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void initState() {
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super.initState();
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controller = GatewayController(context);
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transactionController = Provider.of<TransactionController>(
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context,
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listen: false,
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);
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_startPolling();
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}
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void _startPolling() {
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// Priority 1: transaction ID passed via route param (/poll/:id)
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String? transactionId = widget.transactionId;
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// Priority 2: localStorage (for when gateway redirect causes page reload
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// and the route param path is not available due to hub redirect override)
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if (transactionId == null && kIsWeb) {
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transactionId = Browser.localStorage.getItem('pendingTransactionId');
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Browser.localStorage.removeItem('pendingTransactionId');
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}
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// Priority 3: in-memory confirmation data (normal SPA navigation)
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if (transactionId == null) {
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try {
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transactionId =
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transactionController.model.confirmationData['id'] as String?;
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} catch (_) {
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// confirmationData is late and may not be initialized
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// after a page reload -- ignore
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}
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}
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if (transactionId != null && transactionId.isNotEmpty) {
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controller.pollTransaction(transactionId);
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}
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}
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@override
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void dispose() {
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controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Completing your transaction'),
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leading: IconButton(
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icon: const Icon(Icons.arrow_back),
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onPressed: () => context.go('/'),
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),
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),
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body: ListenableBuilder(
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listenable: controller,
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builder: (context, child) {
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if (controller.model.pollStatus == 'SUCCESS') {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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context.go('/integration');
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});
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}
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return StepLoadingWidget(
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currentStep: 1,
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title: 'Verifying Payment',
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subtitle:
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'We\'re checking with our gateway if your transaction was '
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'successful. This won\'t take long.',
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status: controller.model.pollStatus,
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isLoading: controller.model.isLoading,
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errorMessage:
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controller.model.errorMessage ??
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'We failed to check your transaction status',
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pollAttempt: controller.model.pollAttempt,
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pollMaxAttempts: controller.model.pollMaxAttempts,
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onRetry: () {
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controller.model.isCancelled = false;
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controller.model.pollStatus = 'PENDING';
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controller.model.pollAttempt = 0;
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_startPolling();
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},
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);
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},
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),
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);
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}
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}
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