Function sendSocialAmplificationDM

server/src/notifications/slack.ts:666–785

(data: {
  proposerUserId: string;
  title: string;
  excerpt?: string;
  subtitle?: string;
  workingGroupSlug: string;
  postSlug: string;
  contentType: 'article' | 'link';
  isMembersOnly: boolean;
})

 * - Slack is not configured
 */
export async function sendSocialAmplificationDM(data: {
  proposerUserId: string;
  title: string;
  excerpt?: string;
  subtitle?: string;
  workingGroupSlug: string;
  postSlug: string;
  contentType: 'article' | 'link';
  isMembersOnly: boolean;
}): Promise<boolean> {
  // Only articles, not link posts
  if (data.contentType === 'link') {
    logger.debug({ postSlug: data.postSlug }, 'Skipping social amplification DM for link post');
    return false;
  }

  // Not for members-only content
  if (data.isMembersOnly) {
    logger.debug({ postSlug: data.postSlug }, 'Skipping social amplification DM for members-only post');
    return false;
  }

  if (!isSlackConfigured()) {
    logger.debug('Slack not configured, skipping social amplification DM');
    return false;
  }

  // Look up the author's Slack user ID via the mapping table
  const slackDb = new SlackDatabase();
  const mapping = await slackDb.getByWorkosUserId(data.proposerUserId);

  if (!mapping?.slack_user_id) {
    logger.debug(
      { proposerUserId: data.proposerUserId, postSlug: data.postSlug },
      'No Slack user mapping for author, skipping social amplification DM'
    );
    return false;
  }

  const postUrl = `${APP_URL}/working-groups/${data.workingGroupSlug}#post-${data.postSlug}`;
  const socialText = data.excerpt || data.subtitle || '';

  // LinkedIn: use excerpt/subtitle with URL and hashtags
  const linkedInPost = `"${socialText}"\n\nRead more: ${postUrl}\n\n#AgenticAdvertising #AdCP #AdTech #AI`;

  // Twitter: title + short excerpt, keep under 280 chars
  const tweetBase = `${data.title} — `;
  const tweetHashtags = `\n\n${postUrl}\n\n#AgenticAdvertising #AdCP`;
  const tweetBudget = 280 - tweetBase.length - tweetHashtags.length;
  const tweetExcerpt = tweetBudget > 0 && socialText
    ? socialText.length <= tweetBudget
      ? socialText
      : socialText.slice(0, tweetBudget - 1) + '\u2026'
    : '';
  const tweetPost = tweetExcerpt
    ? `${tweetBase}${tweetExcerpt}${tweetHashtags}`
    : `${data.title}${tweetHashtags}`;