/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import { Injectable } from '@angular/core';
import { StorageService } from '../services/storage.service';
import {
    HttpInterceptor,
    HttpRequest,
    HttpHandler,
    HttpEvent
} from '@angular/common/http';

import { Observable } from 'rxjs';

@Injectable() export class HttpTokenInterceptor implements HttpInterceptor {
  constructor(private jwtService: StorageService) {}

  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    const token = this.jwtService.getToken();
    const headersConfig = {};

    if (token)
      headersConfig['Authorization'] = `Bearer ${token}`;

    if (!request.headers.has('Content-Type') && !request.headers.has('Upload'))
      headersConfig['Content-Type'] = 'application/json; charset=UTF-8';

    const header = request.clone({ setHeaders: headersConfig });
    return next.handle(header);
  }
}