blob: dfb1e7ae4de41a5ff017f58e646c3f3c0258aa6b [file] [log] [blame]
import {BehaviorSubject} from 'rxjs';
import * as _ from 'lodash';
import {IWSEvent} from '../websocket/global';
export interface IStoreHelpersService {
updateCollection(event: IWSEvent, subject: BehaviorSubject<any>): BehaviorSubject<any>;
}
export class StoreHelpers {
public updateCollection(event: IWSEvent, subject: BehaviorSubject<any>): BehaviorSubject<any> {
const collection: any[] = subject.value;
const index: number = _.findIndex(collection, (i) => {
return i.id === event.msg.object.id;
});
const exist: boolean = index > -1;
const isDeleted: boolean = _.includes(event.msg.changed_fields, 'deleted');
// remove
if (exist && isDeleted) {
_.remove(collection, {id: event.msg.object.id});
}
// Replace item at index using native splice
else if (exist && !isDeleted) {
collection.splice(index, 1, event.msg.object);
}
// if the element is not deleted add it
else if (!exist && !isDeleted) {
collection.push(event.msg.object);
}
subject.next(collection);
return subject;
}
}