clean up

lib/pages/payment_methods/model/payment_method_model.dart

@@ -0,0 +1,49 @@
+import 'dart:async';
+
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:fcs/data/services/services.dart';
+import 'package:fcs/domain/entities/payment_method.dart';
+import 'package:fcs/pages/main/model/base_model.dart';
+import 'package:logging/logging.dart';
+
+class PaymentMethodModel extends BaseModel {
+  final log = Logger('PaymentMethodModel');
+
+  List<PaymentMethod> paymentMethods = [];
+
+  PaymentMethod getPaymentMethod(String id) {
+    return paymentMethods.firstWhere((e) => e.id == id, orElse: () => null);
+  }
+
+  StreamSubscription<QuerySnapshot> listener;
+
+  PaymentMethodModel() {
+    if (listener != null) listener.cancel();
+    try {
+      listener = Firestore.instance
+          .collection("/payment_methods")
+          .snapshots()
+          .listen((snaps) {
+        paymentMethods.clear();
+        snaps.documents.forEach((d) {
+          paymentMethods.add(PaymentMethod.fromMap(d.data, d.documentID));
+        });
+        notifyListeners();
+      });
+    } catch (e) {
+      log.warning("error:$e");
+    }
+  }
+
+  Future<void> addPaymentMethod(PaymentMethod paymentMethod) async {
+    Services.instance.commonService.createPaymentMethod(paymentMethod);
+  }
+
+  Future<void> updatePaymentMethod(PaymentMethod paymentMethod) async {
+    Services.instance.commonService.updatePaymentMethod(paymentMethod);
+  }
+
+  Future<void> deletePaymentMethod(String id) async {
+    Services.instance.commonService.deletePayment(id);
+  }
+}