112 lines
3.1 KiB
Dart
112 lines
3.1 KiB
Dart
import 'dart:async';
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import 'package:cloud_firestore/cloud_firestore.dart';
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import 'package:fcs/data/services/services.dart';
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import 'package:fcs/domain/constants.dart';
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import 'package:fcs/domain/entities/fcs_shipment.dart';
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import 'package:fcs/helpers/paginator.dart';
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import 'package:fcs/pages/main/model/base_model.dart';
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import 'package:logging/logging.dart';
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class FcsShipmentModel extends BaseModel {
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final log = Logger('FcsShipmentModel');
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StreamSubscription<QuerySnapshot> listener;
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List<FcsShipment> _fcsShipments = [];
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List<FcsShipment> get fcsShipments => _selectedIndex == 1
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? _fcsShipments
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: List<FcsShipment>.from(_delivered.values);
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Paginator _delivered;
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bool isLoading = false;
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int _selectedIndex = 1;
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set selectedIndex(int index) {
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_selectedIndex = index;
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notifyListeners();
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}
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get selectedIndex => _selectedIndex;
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@override
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void privilegeChanged() {
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super.privilegeChanged();
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_loadFcsShipments();
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if (_delivered != null) _delivered.close();
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_delivered = _getDelivered();
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}
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Future<void> _loadFcsShipments() async {
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if (user == null || !user.hasFcsShipments()) return;
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String path = "/$fcs_shipment_collection/";
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if (listener != null) listener.cancel();
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_fcsShipments = [];
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try {
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listener = Firestore.instance
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.collection("$path")
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.orderBy("shipment_number", descending: true)
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.snapshots()
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.listen((QuerySnapshot snapshot) {
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_fcsShipments.clear();
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_fcsShipments = snapshot.documents.map((documentSnapshot) {
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var s = FcsShipment.fromMap(
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documentSnapshot.data, documentSnapshot.documentID);
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return s;
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}).toList();
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notifyListeners();
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});
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} catch (e) {
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log.warning("Error!! $e");
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}
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}
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Paginator _getDelivered() {
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if (user == null || !user.hasFcsShipments()) return null;
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var pageQuery = Firestore.instance
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.collection("/$fcs_shipment_collection")
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.where("is_delivered", isEqualTo: true)
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.where("is_deleted", isEqualTo: false)
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.orderBy("current_status_date", descending: true);
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var paginator = new Paginator(pageQuery, rowPerLoad: 20, toObj: (data, id) {
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return FcsShipment.fromMap(data, id);
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});
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return paginator;
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}
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Future<void> loadMore() async {
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if (_delivered.ended) return;
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isLoading = true;
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notifyListeners();
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await _delivered.load(onFinished: () {
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isLoading = false;
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notifyListeners();
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});
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}
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Future<void> refresh() async {
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await _delivered.refresh(onFinished: () {
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notifyListeners();
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});
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}
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void initUser(user) {
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super.initUser(user);
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}
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@override
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logout() async {
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if (listener != null) await listener.cancel();
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if (_delivered != null) _delivered.close();
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_fcsShipments = [];
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}
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Future<void> create(FcsShipment fcsShipment) {
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return Services.instance.fcsShipmentService.createFcsShipment(fcsShipment);
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}
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Future<void> update(FcsShipment fcsShipment) {
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return Services.instance.fcsShipmentService.updateFcsShipment(fcsShipment);
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}
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}
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