import { Injectable } from '@angular/core';
import {
  HttpRequest,
  HttpHandler,
  HttpEvent,
  HttpInterceptor
} from '@angular/common/http';
import { Observable } from 'rxjs';

@Injectable()
export class HttpConfigInterceptor implements HttpInterceptor {

  constructor() {}

  intercept(request: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
    const token = sessionStorage.getItem(btoa('CICADA_SESSION_TOKEN'));

    if (token) {
      request = request.clone({headers: request.headers.set('Authorization', 'Bearer ' + token)});
    }

    if (!request.headers.has('Content-Type')) {
      request = request.clone({headers: request.headers.set('Content-Type', 'text/plain')});
    }

    request = request.clone({headers: request.headers.set('Accept', 'application/json')});
    return next.handle(request);
  }
}