feat: Webhook (#8457)

* feat: introduce webhook

* wip

* wip

* wip

* Update CHANGELOG.md

packages/backend/src/server/api/endpoints/i/webhooks/create.ts

@@ -0,0 +1,43 @@
+import define from '../../../define.js';
+import { genId } from '@/misc/gen-id.js';
+import { Webhooks } from '@/models/index.js';
+import { publishInternalEvent } from '@/services/stream.js';
+import { webhookEventTypes } from '@/models/entities/webhook.js';
+
+export const meta = {
+	tags: ['webhooks'],
+
+	requireCredential: true,
+
+	kind: 'write:account',
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		name: { type: 'string', minLength: 1, maxLength: 100 },
+		url: { type: 'string', minLength: 1, maxLength: 1024 },
+		secret: { type: 'string', minLength: 1, maxLength: 1024 },
+		on: { type: 'array', items: {
+			type: 'string', enum: webhookEventTypes,
+		} },
+	},
+	required: ['name', 'url', 'secret', 'on'],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+export default define(meta, paramDef, async (ps, user) => {
+	const webhook = await Webhooks.insert({
+		id: genId(),
+		createdAt: new Date(),
+		userId: user.id,
+		name: ps.name,
+		url: ps.url,
+		secret: ps.secret,
+		on: ps.on,
+	}).then(x => Webhooks.findOneByOrFail(x.identifiers[0]));
+
+	publishInternalEvent('webhookCreated', webhook);
+
+	return webhook;
+});