2021-09-08 13:55:52 +02:00

101 lines
4.0 KiB
TypeScript

import type { Operation } from '../../../ldp/operations/Operation';
import { BadRequestHttpError } from '../../../util/errors/BadRequestHttpError';
import { createErrorMessage } from '../../../util/errors/ErrorUtil';
import { trimTrailingSlashes } from '../../../util/PathUtil';
import type {
InteractionResponseResult,
InteractionHandler,
Interaction,
} from '../email-password/handler/InteractionHandler';
import { IdpInteractionError } from '../util/IdpInteractionError';
import type { InteractionRoute, TemplatedInteractionResult } from './InteractionRoute';
/**
* Default implementation of the InteractionRoute.
* See function comments for specifics.
*/
export class BasicInteractionRoute implements InteractionRoute {
public readonly route: RegExp;
public readonly handler: InteractionHandler;
public readonly viewTemplates: Record<string, string>;
public readonly prompt?: string;
public readonly responseTemplates: Record<string, string>;
public readonly controls: Record<string, string>;
/**
* @param route - Regex to match this route.
* @param viewTemplates - Templates to render on GET requests.
* Keys are content-types, values paths to a template.
* @param handler - Handler to call on POST requests.
* @param prompt - In case of requests to the IDP entry point, the session prompt will be compared to this.
* @param responseTemplates - Templates to render as a response to POST requests when required.
* Keys are content-types, values paths to a template.
* @param controls - Controls to add to the response JSON.
* The keys will be copied and the values will be converted to full URLs.
*/
public constructor(route: string,
viewTemplates: Record<string, string>,
handler: InteractionHandler,
prompt?: string,
responseTemplates: Record<string, string> = {},
controls: Record<string, string> = {}) {
this.route = new RegExp(route, 'u');
this.viewTemplates = viewTemplates;
this.handler = handler;
this.prompt = prompt;
this.responseTemplates = responseTemplates;
this.controls = controls;
}
/**
* Returns the stored controls.
*/
public getControls(): Record<string, string> {
return this.controls;
}
/**
* Checks support by comparing the prompt if the path targets the base URL,
* and otherwise comparing with the stored route regular expression.
*/
public supportsPath(path: string, prompt?: string): boolean {
// In case the request targets the IDP entry point the prompt determines where to go
if (trimTrailingSlashes(path).length === 0 && prompt) {
return this.prompt === prompt;
}
return this.route.test(path);
}
/**
* GET requests return a default response result.
* POST requests return the InteractionHandler result.
* InteractionHandler errors will be converted into response results.
*
* All results will be appended with the matching template paths.
*
* Will error for other methods
*/
public async handleOperation(operation: Operation, oidcInteraction?: Interaction):
Promise<TemplatedInteractionResult> {
switch (operation.method) {
case 'GET':
return { type: 'response', templateFiles: this.viewTemplates };
case 'POST':
try {
const result = await this.handler.handleSafe({ operation, oidcInteraction });
return { ...result, templateFiles: this.responseTemplates };
} catch (error: unknown) {
// Render error in the view
const errorMessage = createErrorMessage(error);
const result: InteractionResponseResult = { type: 'response', details: { errorMessage }};
if (IdpInteractionError.isInstance(error)) {
result.details!.prefilled = error.prefilled;
}
return { ...result, templateFiles: this.viewTemplates };
}
default:
throw new BadRequestHttpError(`Unsupported request: ${operation.method} ${operation.target.path}`);
}
}
}