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/pages/main/model/base_model.dart';
import 'package:fcs/pagination/paginator_listener.dart';
import 'package:logging/logging.dart';

class CartonModel extends BaseModel {
  final log = Logger('CartonModel');

  PaginatorListener<Carton>? cartonsByFilter;
  PaginatorListener<Carton>? getBoxes;

  int selectedIndex = 1;
  int _selectedIndexFilter = 1;
  bool isLoading = false;

  List<String> cartonTypes = [
    carton_from_packages,
    carton_from_cartons,
    carton_mix_box
  ];
  List<String> mixBoxTypes = [mix_delivery, mix_pickup];
  List<String> cartonTypesInfo = [
    carton_from_packages,
    carton_from_cartons,
    carton_mix_box,
    carton_from_shipments,
    carton_small_bag
  ];

  int get selectedIndexFilter => _selectedIndexFilter;

  set selectedIndexFilter(int index) {
    _selectedIndexFilter = index;
    _loadPaginationCartons(
        _selectedIndexFilter == 1 ? "carton_weight" : "user_name");
    notifyListeners();
  }

  @override
  void privilegeChanged() {
    if (user != null || !user!.hasCarton()) {
      _initData();
    }
  }

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

  @override
  logout() async {
    getBoxes?.close();
    cartonsByFilter?.close();
  }

  Future<void> _initData() async {
    logout();
    _selectedIndexFilter = 1;
    _loadPaginationCartons(
        _selectedIndexFilter == 1 ? "carton_weight" : "user_name");
  }

  onChanged(int index) {
    selectedIndex = index;
    loadPaginationBoxes(selectedIndex);
    notifyListeners();
  }

  Future<void> loadPaginationBoxes(int index) async {
    if (user == null || !user!.hasCarton()) return;

    String path = "/$cartons_collection";
    Query col = FirebaseFirestore.instance.collection(path);
    Query pageQuery = FirebaseFirestore.instance.collection(path);

    if (index == 1) {
      col = col.where("status",
          whereIn: [carton_packed_status, carton_shipped_status]);
      pageQuery = pageQuery.where("status",
          whereIn: [carton_packed_status, carton_shipped_status]);
    }

    if (index == 2) {
      col = col.where("is_delivered", isEqualTo: true);
      pageQuery = pageQuery.where("is_delivered", isEqualTo: true);
    }

    pageQuery = pageQuery.orderBy("created_at", descending: true);

    getBoxes?.close();
    getBoxes = PaginatorListener<Carton>(
        col, pageQuery, (data, id) => Carton.fromMap(data, id),
        rowPerLoad: 30);
  }

  _loadPaginationCartons(String orderName) {
    if (user == null || !user!.hasCarton()) return null;
    String path = "/$cartons_collection";

    Query col = FirebaseFirestore.instance.collection(path).where("carton_type",
        whereIn: [
          carton_from_packages,
          carton_from_cartons
        ]).where("status", isEqualTo: carton_packed_status);
    Query pageQuery = FirebaseFirestore.instance
        .collection(path)
        .where("carton_type",
            whereIn: [carton_from_packages, carton_from_cartons])
        .where("status", isEqualTo: carton_packed_status)
        .orderBy(orderName, descending: true);

    cartonsByFilter?.close();
    cartonsByFilter = PaginatorListener<Carton>(
        col, pageQuery, (data, id) => Carton.fromMap(data, id),
        rowPerLoad: 30);
  }

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

  Future<List<Carton>> getCartonsByFcsShipment(String fcsShipmentID) async {
    String path = "/$cartons_collection";
    var querySnap = await FirebaseFirestore.instance
        .collection(path)
        .where("fcs_shipment_id", isEqualTo: fcsShipmentID)
        .where("is_deleted", isEqualTo: false)
        .get();
    return querySnap.docs.map((e) => Carton.fromMap(e.data(), e.id)).toList();
  }

  Future<List<Carton>> getCartonsForInvoice(
      String fcsShipmentID, String userID) async {
    String path = "/$cartons_collection";
    var querySnap = await FirebaseFirestore.instance
        .collection(path)
        .where("fcs_shipment_id", isEqualTo: fcsShipmentID)
        .where("user_id", isEqualTo: userID)
        .where("is_deleted", isEqualTo: false)
        .where("is_invoiced", isEqualTo: false)
        .get();
    List<Carton> cartons =
        querySnap.docs.map((e) => Carton.fromMap(e.data(), e.id)).toList();
    return cartons;
  }

  Future<List<Carton>> getMixCartonsByFcsShipment(String fcsShipmentID) async {
    String path = "/$cartons_collection";
    var querySnap = await FirebaseFirestore.instance
        .collection(path)
        .where("fcs_shipment_id", isEqualTo: fcsShipmentID)
        .where("carton_type", isEqualTo: carton_mix_box)
        .where("is_deleted", isEqualTo: false)
        .get();
    return querySnap.docs.map((e) => Carton.fromMap(e.data(), e.id)).toList();
  }

  Future<Carton> getCarton(String id) async {
    String path = "/$cartons_collection";
    var snap = await FirebaseFirestore.instance.collection(path).doc(id).get();
    return Carton.fromMap(snap.data() as Map<String, dynamic>, snap.id);
  }

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

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

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

  Future<List<Carton>> searchCarton(String term) async {
    return Services.instance.cartonService.searchCarton(term);
  }
}