Move bulk of webhook logic to plugin (#4866)

* Move bulk of webhook logic to plugin

* Re-enable cleanup task

* cron tasks

plugins/webhooks/server/tasks/CleanupWebhookDeliveriesTask.ts

@@ -0,0 +1,33 @@
+import { subDays } from "date-fns";
+import { Op } from "sequelize";
+import Logger from "@server/logging/Logger";
+import { WebhookDelivery } from "@server/models";
+import BaseTask, {
+  TaskPriority,
+  TaskSchedule,
+} from "@server/queues/tasks/BaseTask";
+
+type Props = void;
+
+export default class CleanupWebhookDeliveriesTask extends BaseTask<Props> {
+  static cron = TaskSchedule.Daily;
+
+  public async perform(_: Props) {
+    Logger.info("task", `Deleting WebhookDeliveries older than one week…`);
+    const count = await WebhookDelivery.unscoped().destroy({
+      where: {
+        createdAt: {
+          [Op.lt]: subDays(new Date(), 7),
+        },
+      },
+    });
+    Logger.info("task", `${count} old WebhookDeliveries deleted.`);
+  }
+
+  public get options() {
+    return {
+      attempts: 1,
+      priority: TaskPriority.Background,
+    };
+  }
+}