feat: Webhook (#8457)

* feat: introduce webhook

* wip

* wip

* wip

* Update CHANGELOG.md

packages/backend/src/queue/processors/webhook-deliver.ts

@@ -0,0 +1,56 @@
+import { URL } from 'node:url';
+import Bull from 'bull';
+import Logger from '@/services/logger.js';
+import { WebhookDeliverJobData } from '../types.js';
+import { getResponse, StatusError } from '@/misc/fetch.js';
+import { Webhooks } from '@/models/index.js';
+import config from '@/config/index.js';
+
+const logger = new Logger('webhook');
+
+let latest: string | null = null;
+
+export default async (job: Bull.Job<WebhookDeliverJobData>) => {
+	try {
+		if (latest !== (latest = JSON.stringify(job.data.content, null, 2))) {
+			logger.debug(`delivering ${latest}`);
+		}
+
+		const res = await getResponse({
+			url: job.data.to,
+			method: 'POST',
+			headers: {
+				'User-Agent': 'Misskey-Hooks',
+				'X-Misskey-Host': config.host,
+				'X-Misskey-Hook-Id': job.data.webhookId,
+				'X-Misskey-Hook-Secret': job.data.secret,
+			},
+			body: JSON.stringify(job.data.content),
+		});
+
+		Webhooks.update({ id: job.data.webhookId }, {
+			latestSentAt: new Date(),
+			latestStatus: res.status,
+		});
+
+		return 'Success';
+	} catch (res) {
+		Webhooks.update({ id: job.data.webhookId }, {
+			latestSentAt: new Date(),
+			latestStatus: res instanceof StatusError ? res.statusCode : 1,
+		});
+
+		if (res instanceof StatusError) {
+			// 4xx
+			if (res.isClientError) {
+				return `${res.statusCode} ${res.statusMessage}`;
+			}
+
+			// 5xx etc.
+			throw `${res.statusCode} ${res.statusMessage}`;
+		} else {
+			// DNS error, socket error, timeout ...
+			throw res;
+		}
+	}
+};