import { resolveGlobalDedupeCache } from "openclaw/plugin-sdk/core";

/**
 * In-memory cache of Slack threads the bot has participated in.
 * Used to auto-respond in threads without requiring @mention after the first reply.
 * Follows a similar TTL pattern to the MS Teams and Telegram sent-message caches.
 */

const TTL_MS = 24 * 60 * 60 * 1000; // 24 hours
const MAX_ENTRIES = 5000;

/**
 * Keep Slack thread participation shared across bundled chunks so thread
 * auto-reply gating does not diverge between prepare/dispatch call paths.
 */
const SLACK_THREAD_PARTICIPATION_KEY = Symbol.for("openclaw.slackThreadParticipation");
const threadParticipation = resolveGlobalDedupeCache(SLACK_THREAD_PARTICIPATION_KEY, {
  ttlMs: TTL_MS,
  maxSize: MAX_ENTRIES,
});

function makeKey(accountId: string, channelId: string, threadTs: string): string {
  return `${accountId}:${channelId}:${threadTs}`;
}

export function recordSlackThreadParticipation(
  accountId: string,
  channelId: string,
  threadTs: string,
): void {
  if (!accountId || !channelId || !threadTs) {
    return;
  }
  threadParticipation.check(makeKey(accountId, channelId, threadTs));
}

export function hasSlackThreadParticipation(
  accountId: string,
  channelId: string,
  threadTs: string,
): boolean {
  if (!accountId || !channelId || !threadTs) {
    return false;
  }
  return threadParticipation.peek(makeKey(accountId, channelId, threadTs));
}

export function clearSlackThreadParticipationCache(): void {
  threadParticipation.clear();
}