/*
 * 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 { Injectable } from '@angular/core';
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
import { environment } from 'src/environments/environment';
import { v4 as uuid } from 'uuid';

@Injectable()
export class RequestidInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
    // this is skipping everything that is not /api (like /keycloak)
    if (!request.url.toLowerCase().startsWith(environment.backendServerUrl)) {
      return next.handle(request);
    }

    request = request.clone({ setHeaders: { 'X-Request-Id': uuid() } });
    return next.handle(request);
  }
}