import 'package:doctor_app_flutter/core/enum/viewstate.dart';
import 'package:doctor_app_flutter/core/service/patient-vital-signs-service.dart';
import 'package:doctor_app_flutter/core/viewModel/base_view_model.dart';
import 'package:doctor_app_flutter/models/patient/PatientArrivalEntity.dart';
import 'package:doctor_app_flutter/models/patient/patiant_info_model.dart';
import 'package:doctor_app_flutter/models/patient/vital_sign/patient-vital-sign-data.dart';
import 'package:doctor_app_flutter/models/patient/vital_sign/vital_sign_res_model.dart';

import '../../locator.dart';

class VitalSignsViewModel extends BaseViewModel {
  VitalSignsService _vitalSignService = locator<VitalSignsService>();

  List<PatientArrivalEntity> get patientArrivalList =>
      _vitalSignService.patientArrivalList;

  VitalSignData get patientVitalSigns => _vitalSignService.patientVitalSigns;

  Future getPatientArrivalList(String date, PatiantInformtion patient,
      {String fromDate}) async {
    // TODO when arrival list work un comment below lines
   /* setState(ViewState.Busy);
    await _vitalSignService.getPatientArrivalList(date, fromDate: fromDate);
    if (_vitalSignService.hasError) {
      error = _vitalSignService.error;
      setState(ViewState.Error);
    } else {
      await getPatientVitalSign(patient);
    }*/
    makeVitalSignDemoData();
  }

  PatientArrivalEntity getPatientAppointmentEntity(PatiantInformtion patient) {
    String ffName = "${patient.firstName} ${patient.lastName}";
    String fmfName =
        "${patient.firstName} ${patient.middleName} ${patient.lastName}";

    for (var element in patientArrivalList) {
      int index = patientArrivalList.indexOf(element);
      if (element.patientName == ffName || element.patientName == fmfName) {
        return element;
      }
      // print("patient index: $index");
    }
    return null;
  }

  Future getPatientVitalSign(PatiantInformtion patient) async {
    setState(ViewState.Busy);
    PatientArrivalEntity patientArrivalEntity =
        getPatientAppointmentEntity(patient);
    if (patientArrivalEntity == null) {
      _vitalSignService.hasError = true;
      error = "There is no appointments for this patient";
      setState(ViewState.Error);
      return;
    }
    await _vitalSignService.getPatientVitalSign(patientArrivalEntity);
    // TODO remove (not) from below condition
    if (!_vitalSignService.hasError) {
      error = _vitalSignService.error;
      setState(ViewState.Error);
    } else {
      if (patientVitalSigns == null) {
        makeVitalSignDemoData();
      }
      setState(ViewState.Idle);
    }
  }

  makeVitalSignDemoData(){
    _vitalSignService.patientVitalSigns = VitalSignData(
      appointmentNo: 2016053265,
      bloodPressureCuffLocation: 0,
      bloodPressureCuffSize: 0,
      bloodPressureHigher: 38,
      bloodPressureLower: 32,
      bloodPressurePatientPosition: 1,
      bodyMassIndex: 31.11,
      fio2: 0,
      headCircumCm: 0,
      heightCm: 150,
      idealBodyWeightLbs: -2,
      isPainManagementDone: false,
      isVitalsRequired: true,
      leanBodyWeightLbs: 0,
      painCharacter: null,
      painDuration: null,
      painFrequency: null,
      painLocation: null,
      painScore: 0,
      patientMRN: 3333274,
      patientType: 1,
      pulseBeatPerMinute: 0,
      pulseRhythm: 0,
      respirationBeatPerMinute: 0,
      respirationPattern: 0,
      sao2: 0,
      status: 47,
      temperatureCelcius: 40,
      temperatureCelciusMethod: 1,
      waistSizeInch: 39,
      weightKg: 70,
    );
  }

  String getBMI(double bodyMassIndex) {
    if (bodyMassIndex <= 18.5) {
      return "Underweight";
    } else if (bodyMassIndex <= 25.0) {
      return "Normal";
    } else if (bodyMassIndex <= 30) {
      return "Overweight";
    } else { // > 30.0
      return "Obese";
    }
  }

  String getTempratureMethod(int temperatureCelciusMethod){
     // temperatureCelciusMethod ( vital sign response field )- master 2005
    if(temperatureCelciusMethod == 1){
      return "Oral";
    } else if(temperatureCelciusMethod == 2){
      return "Axilla";
    } else if(temperatureCelciusMethod == 3){
      return "Rectal";
    } else if(temperatureCelciusMethod == 4){
      return "Tympanic";
    } else if(temperatureCelciusMethod == 5){
      return "Temporal";
    }
  }

}