import {Injectable} from '@angular/core';
import {ActivatedRouteSnapshot, CanActivate, Router, RouterStateSnapshot} from '@angular/router';
import {Observable} from 'rxjs/Observable';
import {Session} from './utils/helper.class';
import {LoginErrorCodes} from './utils/guardHelper.class';
import {catchError, filter, map, mergeMap} from "rxjs/operators";
import {UserManagementService} from "../services/user-management.service";
import {UserRegistryService} from "../services/user-registry.service";
import {of} from "rxjs";
import {properties} from "../../../environments/environment";
import {ConnectHelper} from "../connect/connectHelper";

@Injectable()
export class VerificationGuard implements CanActivate {
  
  constructor(private router: Router,
              private userRegistryService: UserRegistryService,
              private userManagementService: UserManagementService) {
  }
  
  check(path: string, id: string, type: string, entity: string): Observable<boolean> | boolean {
    if (Session.isLoggedIn()) {
      return  this.userManagementService.getUserInfo(false).pipe(map(user => {
        if(user) {
          if(id) {
            return this.userRegistryService.getInvitation(id).pipe(map(invitation => {
              if(invitation.type !== type || invitation.entity !== entity) {
                this.router.navigate(['/error'], {queryParams: {'page': path}});
                return false;
              } else {
                return true;
              }
            }), catchError(error => {
              if(error.status === 404) {
                this.router.navigate(['/error'], {queryParams: {'page': path}});
              } else {
                this.router.navigate(['/user-info'], {queryParams: {'errorCode': LoginErrorCodes.NOT_AUTHORIZED, 'redirectUrl': path}});
              }
              return of(false);
            }));
          } else {
            this.router.navigate(['/error'], {queryParams: {'page': path}});
            return of(false);
          }
        } else {
          this.router.navigate(['/user-info'], {queryParams: {'errorCode': LoginErrorCodes.NOT_LOGIN, 'redirectUrl': path}});
          return of(false);
        }
      }), mergeMap(authorized => {
        return authorized;
      }));
    } else {
      this.router.navigate(['/user-info'], {queryParams: {'errorCode': LoginErrorCodes.NOT_LOGIN,'redirectUrl': path}});
      return false;
    }
  }
  
  canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> | boolean {
    if(properties.dashboard === "connect" && properties.environment === 'development') {
      let communityId = ConnectHelper.getCommunityFromDomain(properties.domain);
      communityId = (communityId)?communityId:route.queryParams['communityId'];
      return this.check(state.url, route.params.id, 'community', communityId);
    } else {
      return false;
    }
  }
}