FarmMapsLib/projects/common/src/fm/components/has-claim/has-claim.directive.ts

import { Directive, Input, OnInit, TemplateRef, ViewContainerRef } from '@angular/core';
import { Store } from '@ngrx/store';
import { Observable } from 'rxjs';
import { IUser } from '../../models/user';
import * as appCommonReducer from '../../reducers/app-common.reducer';

@Directive({
  selector: '[fm-hasclaim]',
})
export class HasClaimDirective  implements OnInit{
  @Input('fm-hasclaim') claim:string;

  constructor(private templateRef$: TemplateRef<any>,private viewContainerRef$: ViewContainerRef,private store$: Store<appCommonReducer.State>) { }
  private user$:Observable<IUser> = this.store$.select(appCommonReducer.SelectGetUser);
  private hasView = false;
  ngOnInit() {   
     this.user$.subscribe((user) => {
      if (user && user.claims[this.claim]) {
        this.viewContainerRef$.createEmbeddedView(this.templateRef$);
        this.hasView=true;
      } else if (this.hasView) {
        this.viewContainerRef$.clear();
        this.hasView = false;     
      }  
    });    
  }
}