import 'dart:async';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:fcs/data/services/services.dart';
import 'package:fcs/domain/constants.dart';
import 'package:fcs/domain/entities/carton.dart';
import 'package:fcs/domain/entities/cargo_type.dart';
import 'package:fcs/domain/entities/package.dart';
import 'package:fcs/domain/vo/message.dart';
import 'package:fcs/domain/vo/shipment_status.dart';
import 'package:fcs/domain/vo/delivery_address.dart';
import 'package:fcs/helpers/paginator.dart';
import 'package:fcs/pages/main/model/base_model.dart';
import 'package:logging/logging.dart';

class CartonModel extends BaseModel {
  List<Carton> _boxes = [];
  final log = Logger('CartonModel');
  List<Carton> get boxes =>
      _selectedIndex == 1 ? _boxes : List<Carton>.from(_delivered.values);

  Paginator _delivered;
  int _selectedIndex = 1;
  bool isLoading = false;

  StreamSubscription<QuerySnapshot> listener;
  static List<ShipmentStatus> statusHistory = [
    ShipmentStatus(status: "Packed", date: DateTime(2020, 6, 1), done: true),
    ShipmentStatus(status: "Shipped", date: DateTime(2020, 6, 5), done: false),
    ShipmentStatus(
        status: "Delivered", date: DateTime(2020, 6, 15), done: false)
  ];
  static List<Package> packages = [
    // PackageModel.packages[0],
    // PackageModel.packages[1],
    // PackageModel.packages[2]
  ];

  List<Carton> boxeList = [
    Carton(
        shipmentNumber: "A202",
        receiverNumber: "3",
        receiverName: "Ko Myo Min",
        boxNumber: "1",
        rate: 7,
        packageType: "General",
        weight: 75,
        status: "Packed",
        receiverAddress: '1 Bo Yar Nyunt St.\nDagon Tsp, Yangon',
        cargoDesc: "Clothes",
        desc: "Desc 1",
        cartonType: carton_from_packages,
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        packages: packages,
        shipmentHistory: statusHistory,
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A203",
        receiverNumber: "3",
        receiverName: "Ko Myo Min",
        boxNumber: "2",
        rate: 7,
        packageType: "General",
        weight: 75,
        status: "Packed",
        cargoDesc: "Clothes",
        desc: "Desc 2",
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 20,
        length: 30,
        shipmentWeight: 36,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '1 Bo Yar Nyunt St.\nDagon Tsp, Yangon',
        cartonType: carton_from_shipments,
        deliveryAddress: DeliveryAddress(
            fullName: 'Mg Myo',
            addressLine1: '153-154 5th Thitsar.',
            addressLine2: 'South Okkalapa Township',
            city: 'Yangon',
            state: 'Myanmar',
            phoneNumber: '+09 95724 8750'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A204",
        receiverNumber: "3",
        receiverName: "Ko Myo Min",
        boxNumber: "3",
        rate: 7,
        packageType: "General",
        weight: 75,
        cargoDesc: "Shoes",
        status: "Packed",
        desc: "Desc 3",
        cartonType: carton_mix_box,
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '1 Bo Yar Nyunt St.\nDagon Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'Mg Myo',
            addressLine1: '153-154 5th Thitsar.',
            addressLine2: 'South Okkalapa Township',
            city: 'Yangon',
            state: 'Myanmar',
            phoneNumber: '+09 95724 8750'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A202",
        receiverNumber: "2",
        receiverName: "Ma Aye",
        boxNumber: "1",
        rate: 8,
        packageType: "Medicine",
        weight: 75,
        status: "Packed",
        cargoDesc: "Dietary supplement",
        desc: "Desc 4",
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '2 Shwe Taung Kyar St, Bahan Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A202",
        receiverNumber: "2",
        receiverName: "Ma Aye",
        boxNumber: "3",
        rate: 7,
        packageType: "General",
        cargoDesc: "Handbags",
        weight: 75,
        status: "Arrived",
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '2 Shwe Taung Kyar St, Bahan Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A202",
        receiverNumber: "2",
        receiverName: "Ma Aye",
        boxNumber: "2",
        rate: 7,
        packageType: "General",
        cargoDesc: "Handbags",
        weight: 75,
        status: "Shipped",
        arrivedDate: DateTime(2020, 6, 1),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '2 Shwe Taung Kyar St, Bahan Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A201",
        receiverNumber: "1",
        receiverName: "Ko Wai",
        boxNumber: "1",
        rate: 9,
        packageType: "Dangerous",
        cargoDesc: "Phones and Scooters",
        weight: 75,
        status: "Delivered",
        arrivedDate: DateTime(2020, 5, 21),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '3 Kambzwza St, Bahan Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
    Carton(
        shipmentNumber: "A201",
        receiverNumber: "1",
        receiverName: "Ko Wai",
        boxNumber: "2",
        rate: 7,
        packageType: "General",
        cargoDesc: "Construction tools",
        weight: 75,
        status: "Delivered",
        arrivedDate: DateTime(2020, 5, 21),
        width: 10,
        height: 10,
        length: 10,
        shipmentWeight: 6,
        shipmentHistory: statusHistory,
        packages: packages,
        receiverAddress: '3 Kambzwza St, Bahan Tsp, Yangon',
        deliveryAddress: DeliveryAddress(
            fullName: 'U Nyi Nyi',
            addressLine1: '154-19 64th Ave.',
            addressLine2: 'Flushing',
            city: 'NY',
            state: 'NY',
            phoneNumber: '+1 (292)215-2247'),
        cargoTypes: [
          CargoType(name: 'General', weight: 25),
          CargoType(name: 'Medicine', weight: 20),
          CargoType(name: 'Dangerous', weight: 30)
        ]),
  ];

  List<Carton> get completed {
    return boxes.where((e) => e.status == "Delivered").toList()
      ..sort((e1, e2) {
        return e2.packageNumber.compareTo(e1.packageNumber);
      });
  }

  List<Carton> get processed {
    return boxes.where((e) => e.status == "Packed").toList()
      ..sort((e1, e2) {
        return e2.packageNumber.compareTo(e1.packageNumber);
      });
  }

  List<Carton> get upcoming {
    return boxes
        .where((e) =>
            e.status == "Packed" ||
            // e.status == "Received" ||
            e.status == "Shipped" ||
            e.status == "Arrived")
        .toList()
          ..sort((e1, e2) {
            return e2.packageNumber.compareTo(e1.packageNumber);
          });
  }

  List<String> cartonTypes = [carton_from_packages, carton_mix_box];

  set selectedIndex(int index) {
    _selectedIndex = index;
    notifyListeners();
  }

  get selectedIndex => _selectedIndex;

  initData() {
    _selectedIndex = 1;
    _loadBoxes();

    if (_delivered != null) _delivered.close();
    // _delivered = _getDelivered();
    _delivered = _getDeliveredExample();
    _delivered.load();
  }

  int count = 0;
  Paginator _getDeliveredExample() {
    count = 1;
    var pageQuery = Firestore.instance
        .collection(
            "/users/8OTfsbVvsUOn1SLxy1OrKk7Y_yNKkVoGalPcIlcHnAY/messages")
        .orderBy("date", descending: true);
    var paginator = new Paginator(pageQuery, rowPerLoad: 20, toObj: (data, id) {
      var m = Message.fromMap(data, id);
      return Carton(
        id: m.id,
        shipmentNumber: m.message,
        boxNumber: "1",
        receiverNumber: "3",
        rate: 0,
        weight: 0,
        arrivedDate: m.date,
      );
    });
    return paginator;
  }

  Future<void> _loadBoxes() async {
    if (user == null || !user.hasCarton()) return;
    String path = "/$cartons_collection/";
    if (listener != null) listener.cancel();
    _boxes = [];
    try {
      listener = Firestore.instance
          .collection("$path")
          .snapshots()
          .listen((QuerySnapshot snapshot) {
        _boxes.clear();
        _boxes = snapshot.documents.map((documentSnapshot) {
          var s = Carton.fromMap(
              documentSnapshot.data, documentSnapshot.documentID);
          return s;
        }).toList();
        notifyListeners();
      });
    } catch (e) {
      log.warning("Error!! $e");
    }
  }

  Paginator _getDelivered() {
    if (user == null || !user.hasCarton()) return null;

    var pageQuery = Firestore.instance
        .collection("/$cartons_collection")
        .where("is_delivered", isEqualTo: true)
        .where("is_deleted", isEqualTo: false);
    var paginator = new Paginator(pageQuery, rowPerLoad: 20, toObj: (data, id) {
      return Carton.fromMap(data, id);
    });
    return paginator;
  }

  Future<void> loadMore() async {
    if (_delivered.ended) return;
    isLoading = true;
    notifyListeners();
    await _delivered.load(onFinished: () {
      isLoading = false;
      notifyListeners();
    });
  }

  Future<void> refresh() async {
    await _delivered.refresh(onFinished: () {
      notifyListeners();
    });
  }

  void initUser(user) {
    super.initUser(user);
  }

  @override
  logout() async {
    if (listener != null) await listener.cancel();
    if (_delivered != null) _delivered.close();
    _boxes = [];
  }

  Future<List<Carton>> getCartons(String shipmentID) async {
    String path = "/$cartons_collection";
    var querySnap = await Firestore.instance
        .collection(path)
        .where("shipment_id", isEqualTo: shipmentID)
        .getDocuments();
    return querySnap.documents
        .map((e) => Carton.fromMap(e.data, e.documentID))
        .toList();
  }

  Future<void> createCarton(Carton carton) {
    return Services.instance.cartonService.createCarton(carton);
  }

  Future<void> updateCarton(Carton carton) {
    return Services.instance.cartonService.updateCarton(carton);
  }
}