Function autoAddToWorkingGroup

server/src/slack/events.ts:387–451

* Auto-add user to a working group when they join its Slack channel * This enables "join channel = join group" for all committee types * * For private committees, we only auto-add if the Slack channel is also private, * since Slack already enforces access control for private channels.

(
  channelId: string,
  workosUserId: string,
  slackMapping: { slack_email?: string | null; slack_real_name?: string | null; slack_display_name?: string | null },
  isPrivateSlackChannel: boolean
)

 * since Slack already enforces access control for private channels.
 */
async function autoAddToWorkingGroup(
  channelId: string,
  workosUserId: string,
  slackMapping: { slack_email?: string | null; slack_real_name?: string | null; slack_display_name?: string | null },
  isPrivateSlackChannel: boolean
): Promise<void> {
  try {
    // Check if this channel is linked to a working group
    const workingGroup = await workingGroupDb.getWorkingGroupBySlackChannelId(channelId);

    if (!workingGroup) {
      // Channel not linked to any working group
      return;
    }

    // Skip auto-add for private committees unless the Slack channel is also private
    // (private Slack channels already enforce access control)
    if (workingGroup.is_private && !isPrivateSlackChannel) {
      logger.debug(
        { workingGroupId: workingGroup.id, name: workingGroup.name },
        'Skipping auto-add: committee is private but Slack channel is public'
      );
      return;
    }

    // Check if already a member
    const isMember = await workingGroupDb.isMember(workingGroup.id, workosUserId);
    if (isMember) {
      logger.debug(
        { workingGroupId: workingGroup.id, userId: workosUserId },
        'User already a member of working group'
      );
      return;
    }

    // Set interest level for industry gatherings (other committee types don't track interest)
    const interestLevel = workingGroup.committee_type === 'industry_gathering' ? 'interested' : undefined;
    const interestSource = 'slack_join';

    await workingGroupDb.addMembershipWithInterest({
      working_group_id: workingGroup.id,
      workos_user_id: workosUserId,
      user_email: slackMapping.slack_email || undefined,
      user_name: slackMapping.slack_real_name || slackMapping.slack_display_name || undefined,
      interest_level: interestLevel,
      interest_source: interestSource,
    });
    invalidateWebAdminStatusCache(workosUserId);

    logger.info(
      {
        workingGroupId: workingGroup.id,
        workingGroupName: workingGroup.name,
        userId: workosUserId,
        type: workingGroup.committee_type,
      },
      'Auto-added user to working group via Slack channel join'
    );