refac

src/lib/utils/chatId.ts

@@ -1,5 +1,6 @@
 const TEMPORARY_CHAT_ID_PREFIX = 'temporary:';
 const LEGACY_TEMPORARY_CHAT_ID_PREFIX = 'local:'; // Legacy temporary chat prefix.
+const CHANNEL_CHAT_ID_PREFIX = 'channel:';
 
 export const createTemporaryChatId = (sessionId: string | undefined) =>
 	`${TEMPORARY_CHAT_ID_PREFIX}${sessionId}`;
@@ -8,3 +9,6 @@ export const isTemporaryChatId = (chatId: string | null | undefined) =>
 	!!chatId &&
 	(chatId.startsWith(TEMPORARY_CHAT_ID_PREFIX) ||
 		chatId.startsWith(LEGACY_TEMPORARY_CHAT_ID_PREFIX));
+
+export const isSavedChatId = (chatId: string | null | undefined) =>
+	!!chatId && !isTemporaryChatId(chatId) && !chatId.startsWith(CHANNEL_CHAT_ID_PREFIX);