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";

@Injectable()
export class ConnectSubscriberGuard implements CanActivate {
  constructor(private router: Router,
              private communityService: CommunityService,
              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.propertiesService.subscribeEnvironment().pipe(map(res => res), mergeMap(properties => {
       return this.userManagementService.getUserInfo(properties.userInfoUrl).pipe(map(user => {
         if (user) {
           errorCode = LoginErrorCodes.NOT_SUBSCRIBER;
           email = user.email;
           let communityDomain = ConnectHelper.getCommunityFromDomain(properties.domain);
           if(communityDomain) {
             community = communityDomain;
           }
           return this.communityService.isSubscribedToCommunity( community, email, properties["adminToolsAPIURL"])
         } 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);
  }

}