import {
  HttpEvent,
  HttpInterceptor,
  HttpHandler,
  HttpRequest,
  HttpErrorResponse,
} from '@angular/common/http';

import { Observable, throwError } from 'rxjs';
import { catchError, retry } from 'rxjs/operators';
import { NGXLogger } from 'ngx-logger';
import { Injectable } from '@angular/core';
import { Router } from '@angular/router';
@Injectable()
export class HttpErrorInterceptor implements HttpInterceptor {
  constructor(private logger: NGXLogger, private router: Router) { }
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request)
      .pipe(
        catchError((error: HttpErrorResponse) => {
          if ([401].indexOf(error.status) !== -1) {
            localStorage.removeItem('user');
            if (this.router.url.startsWith('/home'))
              location.reload(true);
            else
              this.router.navigate(['home']);
          }
          this.logger.error([error, request]);
          return throwError(error);
        })
      )
  }
}