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import {
HttpErrorResponse,
HttpEvent,
HttpHandler,
HttpInterceptor,
HttpRequest
} from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Router } from '@angular/router';
import _ from 'lodash';
import { Observable, throwError as observableThrowError } from 'rxjs';
import { catchError } from 'rxjs/operators';
import { CdHelperClass } from '~/app/shared/classes/cd-helper.class';
import { NotificationType } from '../enum/notification-type.enum';
import { CdNotificationConfig } from '../models/cd-notification';
import { FinishedTask } from '../models/finished-task';
import { AuthStorageService } from './auth-storage.service';
import { NotificationService } from './notification.service';
export class CdHttpErrorResponse extends HttpErrorResponse {
preventDefault: Function;
ignoreStatusCode: Function;
}
@Injectable({
providedIn: 'root'
})
export class ApiInterceptorService implements HttpInterceptor {
constructor(
private router: Router,
private authStorageService: AuthStorageService,
public notificationService: NotificationService
) {}
intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const acceptHeader = request.headers.get('Accept');
let reqWithVersion: HttpRequest<any>;
if (acceptHeader && acceptHeader.startsWith('application/vnd.ceph.api.v')) {
reqWithVersion = request.clone();
} else {
reqWithVersion = request.clone({
setHeaders: {
Accept: CdHelperClass.cdVersionHeader('1', '0')
}
});
}
return next.handle(reqWithVersion).pipe(
catchError((resp: CdHttpErrorResponse) => {
if (resp instanceof HttpErrorResponse) {
let timeoutId: number;
switch (resp.status) {
case 400:
const finishedTask = new FinishedTask();
const task = resp.error.task;
if (_.isPlainObject(task)) {
task.metadata.component = task.metadata.component || resp.error.component;
finishedTask.name = task.name;
finishedTask.metadata = task.metadata;
} else {
finishedTask.metadata = resp.error;
}
finishedTask.success = false;
finishedTask.exception = resp.error;
timeoutId = this.notificationService.notifyTask(finishedTask);
break;
case 401:
this.authStorageService.remove();
this.router.navigate(['/login']);
break;
case 403:
this.router.navigate(['error'], {
state: {
message: $localize`Sorry, you don’t have permission to view this page or resource.`,
header: $localize`Access Denied`,
icon: 'fa fa-lock',
source: 'forbidden'
}
});
break;
default:
timeoutId = this.prepareNotification(resp);
}
/**
* Decorated preventDefault method (in case error previously had
* preventDefault method defined). If called, it will prevent a
* notification to be shown.
*/
resp.preventDefault = () => {
this.notificationService.cancel(timeoutId);
};
/**
* If called, it will prevent a notification for the specific status code.
* @param {number} status The status code to be ignored.
*/
resp.ignoreStatusCode = function (status: number) {
if (this.status === status) {
this.preventDefault();
}
};
}
// Return the error to the method that called it.
return observableThrowError(resp);
})
);
}
private prepareNotification(resp: any): number {
return this.notificationService.show(() => {
let message = '';
if (_.isPlainObject(resp.error) && _.isString(resp.error.detail)) {
message = resp.error.detail; // Error was triggered by the backend.
} else if (_.isString(resp.error)) {
message = resp.error;
} else if (_.isString(resp.message)) {
message = resp.message;
}
return new CdNotificationConfig(
NotificationType.error,
`${resp.status} - ${resp.statusText}`,
message,
undefined,
resp['application']
);
});
}
}
|
