import {filter, map, mergeMap} from 'rxjs/operators';
import {Injectable} from '@angular/core';
import {Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, CanLoad, Route} from '@angular/router';
import {Observable, of} from 'rxjs';
import {Session} from '../../login/utils/helper.class';
import {LoginErrorCodes} from '../../login/utils/guardHelper.class';
import {CommunityService} from '../community/community.service';
import {EnvironmentSpecificService} from '../../utils/properties/environment-specific.service';
import {ConnectHelper} from '../connectHelper';
import {UserManagementService} from "../../services/user-management.service";
import {SubscribeService} from "../../utils/subscribe/subscribe.service";
import {properties} from "../../../../environments/environment";

@Injectable()
export class ConnectSubscriberGuard implements CanActivate {
  constructor(private router: Router,
              private communityService: CommunityService,
              private subscribeService: SubscribeService,
              private userManagementService: UserManagementService,
              private propertiesService: EnvironmentSpecificService) {
  }
  
  check(community: string, path: string): Observable<boolean> | boolean {
    let errorCode = LoginErrorCodes.NOT_LOGIN;
    let email = null;
    const subscribed = this.userManagementService.getUserInfo(false).pipe(map(user => {
      if (user) {
        errorCode = LoginErrorCodes.NOT_SUBSCRIBER;
        email = user.email;
        let communityDomain = ConnectHelper.getCommunityFromDomain(properties.domain);
        if (communityDomain) {
          community = communityDomain;
        }
        if (Session.isSubscribedTo('community', community, user)) {
          return of(true);
        }
        return this.subscribeService.isSubscribedToCommunity(properties, community)
      } else {
        return of(false);
      }
    }), mergeMap(authorized => {
      return authorized;
    }));
    subscribed.pipe(filter(subscribed => !subscribed)).subscribe(() => {
      this.router.navigate(['/user-info'], {
        queryParams: {
          'errorCode': errorCode,
          'redirectUrl': path
        }
      })
    });
    return subscribed;
  }
  
  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | boolean {
    return this.check(route.queryParams['communityId'], state.url);
  }
  
}