Function handleReactionAdded

server/src/slack/events.ts:597–626

(event: SlackReactionAddedEvent)

 * Records reaction activity for engagement tracking
 */
export async function handleReactionAdded(event: SlackReactionAddedEvent): Promise<void> {
  logger.debug(
    { userId: event.user, reaction: event.reaction, channel: event.item.channel },
    'User added reaction'
  );

  try {
    // Get user's org mapping if they're linked
    const mapping = await slackDb.getBySlackUserId(event.user);
    let organizationId: string | undefined;

    if (mapping?.workos_user_id) {
      // Note: Would need to lookup org from WorkOS - for now just record without org
    }

    await slackDb.recordActivity({
      slack_user_id: event.user,
      activity_type: 'reaction',
      channel_id: event.item.channel,
      activity_timestamp: new Date(parseFloat(event.event_ts) * 1000),
      organization_id: organizationId,
      metadata: {
        reaction: event.reaction,
        item_type: event.item.type,
      },
    });
  } catch (error) {
    logger.error({ error, userId: event.user }, 'Failed to record reaction activity');
  }
}

/**
 * Main event dispatcher