99 lines
2.9 KiB
Dart
99 lines
2.9 KiB
Dart
import 'dart:async';
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import 'package:flutter/foundation.dart';
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import 'package:pshared/models/payment/payment.dart';
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import 'package:pshared/provider/payment/multiple/provider.dart';
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import 'package:pshared/provider/payment/payments.dart';
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import 'package:pshared/provider/payment/provider.dart';
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class PaymentsUpdatesProvider extends ChangeNotifier {
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PaymentsProvider? _payments;
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PaymentProvider? _paymentProvider;
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MultiPaymentProvider? _multiPaymentProvider;
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Set<String> _knownKeys = {};
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void update({
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required PaymentsProvider paymentsProvider,
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required PaymentProvider paymentProvider,
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required MultiPaymentProvider multiPaymentProvider,
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}) {
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if (!identical(_payments, paymentsProvider)) {
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_payments = paymentsProvider;
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_syncKnownKeys();
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}
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if (!identical(_paymentProvider, paymentProvider)) {
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_paymentProvider?.removeListener(_onSinglePaymentChanged);
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_paymentProvider = paymentProvider;
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_paymentProvider?.addListener(_onSinglePaymentChanged);
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}
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if (!identical(_multiPaymentProvider, multiPaymentProvider)) {
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_multiPaymentProvider?.removeListener(_onMultiPaymentChanged);
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_multiPaymentProvider = multiPaymentProvider;
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_multiPaymentProvider?.addListener(_onMultiPaymentChanged);
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}
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_syncKnownKeys();
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}
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void _syncKnownKeys() {
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_knownKeys = {
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for (final payment in _payments?.payments ?? const <Payment>[])
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..._keyFor(payment),
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};
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}
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void _onSinglePaymentChanged() {
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final payment = _paymentProvider?.payment;
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if (payment == null) return;
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final key = _key(payment);
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if (key != null && _knownKeys.contains(key)) return;
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_merge([payment]);
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}
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void _onMultiPaymentChanged() {
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final payments = _multiPaymentProvider?.payments ?? const <Payment>[];
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if (payments.isEmpty) return;
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final incoming = <Payment>[];
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for (final payment in payments) {
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final key = _key(payment);
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if (key == null || !_knownKeys.contains(key)) {
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incoming.add(payment);
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}
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}
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if (incoming.isEmpty) return;
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_merge(incoming);
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}
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void _merge(List<Payment> incoming) {
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if (incoming.isEmpty) return;
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_payments?.mergePayments(incoming);
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unawaited(_payments?.refreshCurrentQuerySilently());
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for (final payment in incoming) {
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final key = _key(payment);
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if (key != null) {
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_knownKeys.add(key);
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}
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}
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}
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String? _key(Payment payment) {
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final ref = payment.paymentRef?.trim();
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if (ref != null && ref.isNotEmpty) return ref;
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final idempotency = payment.idempotencyKey?.trim();
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if (idempotency != null && idempotency.isNotEmpty) return idempotency;
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return null;
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}
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Iterable<String> _keyFor(Payment payment) sync* {
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final key = _key(payment);
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if (key != null) yield key;
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}
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@override
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void dispose() {
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_paymentProvider?.removeListener(_onSinglePaymentChanged);
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_multiPaymentProvider?.removeListener(_onMultiPaymentChanged);
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super.dispose();
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}
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}
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