import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:logging/logging.dart';
import 'package:fcs/model/constants.dart';
import 'package:fcs/vo/pd.dart';
import 'package:fcs/vo/user.dart';

import 'base_model.dart';
import 'firebase_helper.dart';

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

  List<PD> pds = [];
  int dateIndex = 0;
  DateTime selectedDate = DateTime.now();

  void initUser(User user) async {
    super.initUser(user);
    loadPDs();
  }


  @override
  logout() async {
    pds = [];
  }

  loadPDs() {
    if (!user.isOwnerAndAbove() && !user.hasInventory()) {
      return;
    }

    try {
      String path = "/$biz_collection/${setting.okEnergyId}/$pds_collection";
      var startDate = new DateTime(
          selectedDate.year, selectedDate.month, selectedDate.day, 0, 0, 0);
      var endDate = new DateTime(
          selectedDate.year, selectedDate.month, selectedDate.day, 23, 59, 59);
      pds.clear();
      getFilterDateSnapshot(path, 'date', startDate, endDate, 'pd_number')
          .listen((QuerySnapshot snapshot) {
        pds = snapshot.documents.map((documentSnapshot) {
          var data =
              PD.fromMap(documentSnapshot.data, documentSnapshot.documentID);
          return data;
        }).toList();
        notifyListeners();
      }).onError((e) {
        log.warning("Error! $e");
      });
    } catch (e) {
      log.warning("Error!! $e");
    }
  }

  Future<PD> loadPDLines(PD pd) async {
    var snaps = await getSnapshot(
        "/$biz_collection/${setting.okEnergyId}/$pds_collection/${pd.id}/$product_collection");
    pd.pdLines = snaps.documents.map((s) => PDLine.fromMap(s.data)).toList();
    return pd;
  }

  Future<void> createPD(PD pd) async {
    await request("/pd", "POST",
        payload: pd.toMap(), token: await getToken());
  }

  void filterDate(DateTime dateTime, int _dateIndex) {
    this.selectedDate = dateTime;
    this.dateIndex = _dateIndex;
    String path = "/$biz_collection/${setting.okEnergyId}/$pds_collection";
    var endDate =
        new DateTime(dateTime.year, dateTime.month, dateTime.day, 23, 59, 59);
    pds.clear();
    getFilterDateSnapshot(path, 'date', dateTime, endDate, 'pd_number').listen(
        (snaps) {
      pds = snaps.documents.map((documentSnapshot) {
        var data =
            PD.fromMap(documentSnapshot.data, documentSnapshot.documentID);
        return data;
      }).toList();
      notifyListeners();
    }, onError: (error) {
      log.warning("FIRESTORE ERROR>>$error");
    });
  }
}