feature: ユーザ作成時にSystemWebhookを発信できるようにする (#14321)

* feature: ユーザ作成時にSystemWebhookを発信できるようにする

* fix CHANGELOG.md

packages/backend/test/utils.ts

@@ -12,13 +12,14 @@ import WebSocket, { ClientOptions } from 'ws';
 import fetch, { File, RequestInit, type Headers } from 'node-fetch';
 import { DataSource } from 'typeorm';
 import { JSDOM } from 'jsdom';
-import { DEFAULT_POLICIES } from '@/core/RoleService.js';
-import { validateContentTypeSetAsActivityPub } from '@/core/activitypub/misc/validator.js';
+import { type Response } from 'node-fetch';
+import Fastify from 'fastify';
 import { entities } from '../src/postgres.js';
 import { loadConfig } from '../src/config.js';
 import type * as misskey from 'misskey-js';
-import { type Response } from 'node-fetch';
-import { ApiError } from "@/server/api/error.js";
+import { DEFAULT_POLICIES } from '@/core/RoleService.js';
+import { validateContentTypeSetAsActivityPub } from '@/core/activitypub/misc/validator.js';
+import { ApiError } from '@/server/api/error.js';
 
 export { server as startServer, jobQueue as startJobQueue } from '@/boot/common.js';
 
@@ -27,11 +28,23 @@ export interface UserToken {
 	bearer?: boolean;
 }
 
+export type SystemWebhookPayload = {
+	server: string;
+	hookId: string;
+	eventId: string;
+	createdAt: string;
+	type: string;
+	body: any;
+}
+
 const config = loadConfig();
 export const port = config.port;
 export const origin = config.url;
 export const host = new URL(config.url).host;
 
+export const WEBHOOK_HOST = 'http://localhost:15080';
+export const WEBHOOK_PORT = 15080;
+
 export const cookie = (me: UserToken): string => {
 	return `token=${me.token};`;
 };
@@ -645,3 +658,37 @@ export async function sendEnvResetRequest() {
 export function castAsError(obj: Record<string, unknown>): { error: ApiError } {
 	return obj as { error: ApiError };
 }
+
+export async function captureWebhook<T = SystemWebhookPayload>(postAction: () => Promise<void>, port = WEBHOOK_PORT): Promise<T> {
+	const fastify = Fastify();
+
+	let timeoutHandle: NodeJS.Timeout | null = null;
+	const result = await new Promise<string>(async (resolve, reject) => {
+		fastify.all('/', async (req, res) => {
+			timeoutHandle && clearTimeout(timeoutHandle);
+
+			const body = JSON.stringify(req.body);
+			res.status(200).send('ok');
+			await fastify.close();
+			resolve(body);
+		});
+
+		await fastify.listen({ port });
+
+		timeoutHandle = setTimeout(async () => {
+			await fastify.close();
+			reject(new Error('timeout'));
+		}, 3000);
+
+		try {
+			await postAction();
+		} catch (e) {
+			await fastify.close();
+			reject(e);
+		}
+	});
+
+	await fastify.close();
+
+	return JSON.parse(result) as T;
+}