error interceptor

import {HttpEvent, HttpHandler, HttpInterceptor, HttpRequest} from '@angular/common/http';
import {Injectable} from '@angular/core';
import {AuthService} from '@services/auth.service';
import {Events} from '@services/events';

import {ToastrService} from 'ngx-toastr';
import {Observable, throwError} from 'rxjs';
import {catchError} from 'rxjs/operators';

@Injectable()
export class ErrorInterceptor implements HttpInterceptor {
  constructor(
    private authenticationService: AuthService,
    private toastr: ToastrService,
    public events: Events
  ) {
  }

  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request).pipe(catchError(err => {

      let pathname = window.location.pathname;

      if (!pathname.includes('/login')) {
        if ([401, 403].indexOf(err.status) !== -1) {
          if (err.code && [202].indexOf(err.code) !== -1 || err.status === 401) {
            this.toastr.info('Token do usuário expirou, realize o login novamente.');
            this.authenticationService.logout();
            location.reload();
          } else {
            this.toastr.error('Usuário não possui permissão para executar esta ação.');
          }
        }

        if ([500].indexOf(err.status) !== -1) {
          this.events.broadcast('onSpinnerDisabled');
          this.toastr.error('Tivemos um problema ao se comunicar com nossos serviços, tente novamente mais tarde.');
        }

        if ([400].indexOf(err.status) !== -1 && !pathname.includes('/login')) {
          if (err.error && err.error.errors) {
            for (const error in err.error.errors) {
              this.toastr.error(err.error.errors[error], 'Verifique os campo', {closeButton: true, timeOut: 5000});
            }
          } else {
            let codeError: string = err.error.codigo !== 0 ? `${err.error.codigo}`.padStart(3, '0') : '';
            let messageError: string = err.error.message !== undefined ? err.error.message : '';
            if (!codeError.startsWith('')) messageError = `${codeError} - ${messageError}`
            this.toastr.warning(messageError);
          }
        }
      }

      // TODO - será tratado aqui posteriormente em caso de token expirado o refresh token

      return throwError(err);
    }))
  }
}