1 files changed, 99 insertions, 0 deletions
diff --git a/packages/backend/src/core/UserWebhookService.ts b/packages/backend/src/core/UserWebhookService.ts
new file mode 100644
index 0000000000..e96bfeea95
--- /dev/null
+++ b/packages/backend/src/core/UserWebhookService.ts
@@ -0,0 +1,99 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import * as Redis from 'ioredis';
+import type { WebhooksRepository } from '@/models/_.js';
+import type { MiWebhook } from '@/models/Webhook.js';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import { GlobalEvents } from '@/core/GlobalEventService.js';
+import type { OnApplicationShutdown } from '@nestjs/common';
+
+@Injectable()
+export class UserWebhookService implements OnApplicationShutdown {
+	private activeWebhooksFetched = false;
+	private activeWebhooks: MiWebhook[] = [];
+
+	constructor(
+		@Inject(DI.redisForSub)
+		private redisForSub: Redis.Redis,
+		@Inject(DI.webhooksRepository)
+		private webhooksRepository: WebhooksRepository,
+	) {
+		this.redisForSub.on('message', this.onMessage);
+	}
+
+	@bindThis
+	public async getActiveWebhooks() {
+		if (!this.activeWebhooksFetched) {
+			this.activeWebhooks = await this.webhooksRepository.findBy({
+				active: true,
+			});
+			this.activeWebhooksFetched = true;
+		}
+
+		return this.activeWebhooks;
+	}
+
+	@bindThis
+	private async onMessage(_: string, data: string): Promise<void> {
+		const obj = JSON.parse(data);
+		if (obj.channel !== 'internal') {
+			return;
+		}
+
+		const { type, body } = obj.message as GlobalEvents['internal']['payload'];
+		switch (type) {
+			case 'webhookCreated': {
+				if (body.active) {
+					this.activeWebhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+						...body,
+						latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+						user: null, // joinなカラムは通常取ってこないので
+					});
+				}
+				break;
+			}
+			case 'webhookUpdated': {
+				if (body.active) {
+					const i = this.activeWebhooks.findIndex(a => a.id === body.id);
+					if (i > -1) {
+						this.activeWebhooks[i] = { // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+							...body,
+							latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+							user: null, // joinなカラムは通常取ってこないので
+						};
+					} else {
+						this.activeWebhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+							...body,
+							latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+							user: null, // joinなカラムは通常取ってこないので
+						});
+					}
+				} else {
+					this.activeWebhooks = this.activeWebhooks.filter(a => a.id !== body.id);
+				}
+				break;
+			}
+			case 'webhookDeleted': {
+				this.activeWebhooks = this.activeWebhooks.filter(a => a.id !== body.id);
+				break;
+			}
+			default:
+				break;
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.redisForSub.off('message', this.onMessage);
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}