import {filter, mergeMap} from 'rxjs/operators';
import { Injectable } from '@angular/core';
import {
  Router,
  CanActivate,
  ActivatedRouteSnapshot,
  RouterStateSnapshot,
  CanLoad,
  Route
} from '@angular/router';
import {Observable, Subscription} from 'rxjs';
import {CommunityService} from '../community/community.service';
import { EnvironmentSpecificService} from '../../utils/properties/environment-specific.service';
import {ConnectHelper} from '../connectHelper';
import {properties} from "../../../../environments/environment";

@Injectable()
export class ConnectCommunityGuard implements  CanActivate {
  sub: Subscription = null;

  constructor(private router: Router,
              private communityService: CommunityService,
              private propertiesService: EnvironmentSpecificService) {
  }

  check(community: string): Observable<boolean> | boolean {
    const obs = this.communityService.isCommunityTypeByState(properties, properties['communityAPI'] + community);

    this.sub = obs.pipe(filter(enabled => !enabled))
        .subscribe(() => this.router.navigate(['errorcommunity']));
    return obs;
  }

  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | boolean {
    return this.check(route.queryParams['communityId']);
  }

  canDeactivate() {
    if(this.sub) {
      this.sub.unsubscribe();
    }
    return true;
  }
}