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import { ErrorHandler, Injectable, InjectionToken, Injector } from '@angular/core';
import { pick } from 'lodash-es';
import { Observable, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';
import { HttpError } from 'ish-core/models/http-error/http-error.model';
/* eslint-disable @typescript-eslint/no-restricted-types */
export interface SpecialHttpErrorHandler {
test(error: HttpErrorResponse, request: HttpRequest<unknown>): boolean;
map(error: HttpErrorResponse, request: HttpRequest<unknown>): Partial<HttpError>;
}
export const SPECIAL_HTTP_ERROR_HANDLER = new InjectionToken<SpecialHttpErrorHandler>('specialHttpErrorHandler');
@Injectable()
export class ICMErrorMapperInterceptor implements HttpInterceptor {
constructor(
private injector: Injector,
private errorHandler: ErrorHandler
) {}
// eslint-disable-next-line complexity
private mapError(httpError: HttpErrorResponse, request: HttpRequest<unknown>): HttpError {
const specialHandlers = this.injector.get<SpecialHttpErrorHandler[]>(SPECIAL_HTTP_ERROR_HANDLER, []);
const specialHandler = specialHandlers.find(handler => handler.test(httpError, request));
const responseError: HttpError = {
name: 'HttpErrorResponse',
status: httpError.status,
};
if (specialHandler) {
return { name: 'HttpErrorResponse', status: httpError.status, ...specialHandler.map(httpError, request) };
}
if (httpError.headers?.get('error-type') === 'error-missing-attributes') {
return { ...responseError, message: httpError.error };
}
if (httpError.headers?.get('error-type') === 'error-invalid-attributes') {
let message = httpError.error;
Eif (typeof request.body === 'object') {
message += JSON.stringify(pick(request.body, httpError.headers?.get('error-invalid-attributes').split(',')));
}
return {
...responseError,
message,
};
}
if (httpError.headers?.get('error-key')) {
return {
...responseError,
code: httpError.headers.get('error-key'),
};
}
if (typeof httpError.error === 'string') {
return {
...responseError,
message: httpError.error,
};
}
Eif (typeof httpError.error === 'object') {
// handle error objects with multiple errors
if (httpError.error?.errors?.length) {
const errors: {
code: string;
message: string;
causes?: {
code: string;
message: string;
paths: string[];
}[];
}[] = httpError.error.errors;
Eif (errors.length === 1) {
const error = errors[0];
if (error.causes?.length) {
return {
...responseError,
errors: httpError.error?.errors,
message: [error.message].concat(...error.causes.map(c => c.message)).join(' '),
};
}
}
return {
...responseError,
errors: httpError.error?.errors,
};
}
// new ADR error format with messages array
else if (httpError.error?.messages?.length) {
const errors: {
code: string;
message?: string;
causes?: {
code: string;
message: string;
}[];
}[] = httpError.error?.messages;
Eif (errors.length > 0) {
const error = errors[0];
return {
...responseError,
errors: httpError.error.messages,
// if there are causes, concatenate the main message with the causes messages, otherwise use the main message
message: (error.message ? '<div>'.concat(error.message).concat('</div>') : '').concat(
error.causes?.length ? error.causes.map(c => '<div>'.concat(c.message).concat('</div>')).join('') : ''
),
};
}
return {
...responseError,
errors: httpError.error?.errors,
};
}
// handle all other error responses with error object
return {
...responseError,
code: httpError.error?.code || httpError.statusText,
message: httpError.error?.message || httpError.message,
};
}
// handle error responses without error object
return pick(httpError, 'name', 'status', 'message');
}
intercept(req: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>> {
return next.handle(req).pipe(
catchError((error: HttpErrorResponse) => {
Iif (SSR) {
this.errorHandler.handleError(error);
}
Eif (error.name === 'HttpErrorResponse') {
return throwError(() => this.mapError(error, req));
}
return throwError(() => error);
})
);
}
}
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