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/*
* Copyright (c) 2022. Deutsche Telekom AG
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
import { Inject, Pipe, PipeTransform } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { ACL_CONFIG, AclConfig } from '../modules/auth/injection-tokens';
import { AuthService } from '../services/auth.service';
import { Observable } from 'rxjs';
import { map, take } from 'rxjs/operators';
/*
hasPermission pipe returns Promise<boolean | void> value based on the authentication file (acl.json) and user's role.
Using the pipe we are able to show/hide the elements in the app for specific user role.
Input parameter is the string from the acl.json
USAGE: *ngIf="'dashboard.tile.KPI_DASHBOARD_TILE' | hasPermission | async"
*/
@Pipe({
name: 'hasPermission',
})
export class HasPermissionPipe implements PipeTransform {
constructor(
readonly httpClient: HttpClient,
readonly authService: AuthService,
@Inject(ACL_CONFIG) readonly acl: AclConfig,
) {}
transform(value: string): Observable<boolean | void> {
return this.authService
.loadCachedUserProfile()
.pipe(
take(1),
map((userProfile) => {
const intersectionOfRoles = Object.keys(this.acl).filter(role => userProfile?.roles.includes(role));
for (const role of intersectionOfRoles) {
if (this.acl[role].includes(value)) {
return true;
}
}
return false;
}))
}
}
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