blob: 99662dab08965ca6d524786633351a45ec690169 [file] [log] [blame]
import {BehaviorSubject} from 'rxjs';
import * as _ from 'lodash';
import {IWSEvent} from '../websocket/global';
import {IXosModelHelpersService} from './model.helpers';
import {IXosResourceService} from '../rest/model.rest';
export interface IStoreHelpersService {
updateCollection(event: IWSEvent, subject: BehaviorSubject<any>): BehaviorSubject<any>;
}
export class StoreHelpers {
static $inject = ['ModelHelpers', 'ModelRest'];
constructor (
private modelHelpers: IXosModelHelpersService,
private modelRest: IXosResourceService
) {
}
public updateCollection(event: IWSEvent, subject: BehaviorSubject<any>): BehaviorSubject<any> {
const collection: any[] = subject.value;
const index: number = _.findIndex(collection, (i) => {
// NOTE evaluate to use event.msg.pk
return i.id === event.msg.object.id;
});
const exist: boolean = index > -1;
const isDeleted: boolean = _.includes(event.msg.changed_fields, 'deleted');
// generate a resource for the model
const endpoint = this.modelHelpers.urlFromCoreModel(event.model);
const resource = this.modelRest.getResource(endpoint);
const model = new resource(event.msg.object);
// 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, model);
}
// if the element is not deleted add it
else if (!exist && !isDeleted) {
collection.push(model);
}
subject.next(collection);
return subject;
}
}