datamodel.dart

import 'package:shared_preferences/shared_preferences.dart';

class Device{
  int id;
  String urn;

  Device(this.id, this.urn);

  factory Device.fromJson(Map<String, dynamic> parsedJson){
    return Device( parsedJson['id'] as int,
        parsedJson['urn'] as String);
  }

  @override
  String toString(){
    return '{ ${this.id}, ${this.urn} }';
  }
}

class Event{
  int id;
  String urn;
  String label;
  String type;
  String description;
  String status;

  Event(
    this.id,
    this.urn,
    this.label,
    this.type,
    this.description,
    this.status
  );

  factory Event.fromJson(Map<String, dynamic> parsedJson){
    return Event( parsedJson['id'] as int,
        parsedJson['urn'] as String,
        parsedJson['label'] as String,
        parsedJson['type'] as String,
        parsedJson['description'] as String,
        parsedJson['status'] as String );
  }

  @override
  String toString(){
    return '{ ${this.id}, ${this.urn}, ${this.label}, ${this.type}, ${this.description}, ${this.status} }';
  }
}

class EventType{
  int id;
  String name;

  EventType(
      this.id,
      this.name
      );

  factory EventType.fromJson(Map<String, dynamic> parsedJson){
    return EventType(parsedJson['id'] as int, parsedJson['name'] as String);
  }
}


abstract class DeviceStoreBase {
  List<Device> store = [];

  int getDeviceIdFromUrn(String urn) {