Initial commit: Penyerahan final Source code Tugas Akhir

lib/providers/history_transactions_provider.dart

@@ -0,0 +1,84 @@
+import 'package:flutter/widgets.dart';
+import 'package:initial_folder/models/history_transaction_model.dart';
+import 'package:initial_folder/services/history_transactions_service.dart';
+
+enum ResultState { loading, noData, hasData, error }
+
+class HistoryTranscationsProvider with ChangeNotifier {
+  HistoryTranscationsProvider({required this.historyTransactionService}) {
+    getHistoryTransaction();
+  }
+
+  final HistoryTransactionService historyTransactionService;
+
+  ResultState? _state;
+  String _message = '';
+  List<HistoryTransactionModel>? _historyTransactionsModel;
+  List<HistoryTransactionModel>? get historyPayment {
+    return _historyTransactionsModel == null
+        ? []
+        : _historyTransactionsModel!
+            .where((element) => element.statusPayment != '2')
+            .toList();
+  }
+
+  List<HistoryTransactionModel>? get paymentPending {
+    return _historyTransactionsModel == null
+        ? []
+        : _historyTransactionsModel!
+            .where((element) => element.statusPayment == '2')
+            .toList();
+  }
+
+  // transaksi dengan status "-5" 
+  List<HistoryTransactionModel>? get paymentAwaitingMethod {
+    return _historyTransactionsModel == null
+        ? []
+        : _historyTransactionsModel!
+            .where((element) => element.statusPayment == '-5')
+            .toList();
+  }
+
+  ResultState? get state => _state;
+  String get message => _message;
+
+  set histtoryTranscation(List<HistoryTransactionModel> historyTr) {
+    _historyTransactionsModel = historyTr;
+    notifyListeners();
+  }
+
+  Stream<List<HistoryTransactionModel>> getHistoryTransactionStream() async* {
+    while (true) {
+      List<HistoryTransactionModel>? response =
+          await historyTransactionService.historyTransactions();
+
+      if (response.isNotEmpty) {
+        yield response
+            .where((transaction) => transaction.statusPayment == '2')
+            .toList();
+      }
+    }
+  }
+
+  Future<dynamic> getHistoryTransaction() async {
+    try {
+      _state = ResultState.loading;
+      notifyListeners();
+      List<HistoryTransactionModel>? response =
+          await historyTransactionService.historyTransactions();
+      if (response.isEmpty) {
+        _state = ResultState.noData;
+        notifyListeners();
+        return _message = 'Tidak Ada data';
+      } else {
+        _state = ResultState.hasData;
+        notifyListeners();
+        return _historyTransactionsModel = response;
+      }
+    } catch (e) {
+      _state = ResultState.error;
+      notifyListeners();
+      return _message = 'Data transaksi gagal diambil';
+    }
+  }
+}