outline/server/queues/tasks/CommentUpdatedNotificationsTask.ts

import { NotificationEventType } from "@shared/types";
import { Comment, Document, Notification, User } from "@server/models";
import ProsemirrorHelper from "@server/models/helpers/ProsemirrorHelper";
import { CommentEvent, CommentUpdateEvent } from "@server/types";
import BaseTask, { TaskPriority } from "./BaseTask";

export default class CommentUpdatedNotificationsTask extends BaseTask<CommentEvent> {
  public async perform(event: CommentUpdateEvent) {
    const [document, comment] = await Promise.all([
      Document.scope("withCollection").findOne({
        where: {
          id: event.documentId,
        },
      }),
      Comment.findByPk(event.modelId),
    ]);
    if (!document || !comment) {
      return;
    }

    const mentions = ProsemirrorHelper.parseMentions(
      ProsemirrorHelper.toProsemirror(comment.data)
    ).filter((mention) => event.data.newMentionIds.includes(mention.id));
    if (mentions.length === 0) {
      return;
    }

    for (const mention of mentions) {
      const recipient = await User.findByPk(mention.modelId);

      if (
        recipient &&
        recipient.id !== mention.actorId &&
        recipient.subscribedToEventType(
          NotificationEventType.MentionedInComment
        )
      ) {
        await Notification.create({
          event: NotificationEventType.MentionedInComment,
          userId: recipient.id,
          actorId: mention.actorId,
          teamId: document.teamId,
          documentId: document.id,
        });
      }
    }
  }

  public get options() {
    return {
      attempts: 1,
      priority: TaskPriority.Background,
    };
  }
}