feat: make telegram reactions visible to clawdbot

src/telegram/sent-message-cache.ts

@@ -0,0 +1,70 @@
+/**
+ * In-memory cache of sent message IDs per chat.
+ * Used to identify bot's own messages for reaction filtering ("own" mode).
+ */
+
+const TTL_MS = 24 * 60 * 60 * 1000; // 24 hours
+
+type CacheEntry = {
+  messageIds: Set<number>;
+  timestamps: Map<number, number>;
+};
+
+const sentMessages = new Map<string, CacheEntry>();
+
+function getChatKey(chatId: number | string): string {
+  return String(chatId);
+}
+
+function cleanupExpired(entry: CacheEntry): void {
+  const now = Date.now();
+  for (const [msgId, timestamp] of entry.timestamps) {
+    if (now - timestamp > TTL_MS) {
+      entry.messageIds.delete(msgId);
+      entry.timestamps.delete(msgId);
+    }
+  }
+}
+
+/**
+ * Record a message ID as sent by the bot.
+ */
+export function recordSentMessage(
+  chatId: number | string,
+  messageId: number,
+): void {
+  const key = getChatKey(chatId);
+  let entry = sentMessages.get(key);
+  if (!entry) {
+    entry = { messageIds: new Set(), timestamps: new Map() };
+    sentMessages.set(key, entry);
+  }
+  entry.messageIds.add(messageId);
+  entry.timestamps.set(messageId, Date.now());
+  // Periodic cleanup
+  if (entry.messageIds.size > 100) {
+    cleanupExpired(entry);
+  }
+}
+
+/**
+ * Check if a message was sent by the bot.
+ */
+export function wasSentByBot(
+  chatId: number | string,
+  messageId: number,
+): boolean {
+  const key = getChatKey(chatId);
+  const entry = sentMessages.get(key);
+  if (!entry) return false;
+  // Clean up expired entries on read
+  cleanupExpired(entry);
+  return entry.messageIds.has(messageId);
+}
+
+/**
+ * Clear all cached entries (for testing).
+ */
+export function clearSentMessageCache(): void {
+  sentMessages.clear();
+}