feat(client): markChatUnread method

packages/client/src/client.ts

@@ -39,6 +39,7 @@ import { iterChatMembers } from './methods/chats/iter-chat-members'
 import { joinChat } from './methods/chats/join-chat'
 import { kickChatMember } from './methods/chats/kick-chat-member'
 import { leaveChat } from './methods/chats/leave-chat'
+import { markChatUnread } from './methods/chats/mark-chat-unread'
 import { restrictChatMember } from './methods/chats/restrict-chat-member'
 import { saveDraft } from './methods/chats/save-draft'
 import { setChatDefaultPermissions } from './methods/chats/set-chat-default-permissions'
@@ -915,6 +916,12 @@ export interface TelegramClient extends BaseTelegramClient {
      * @param clear  (default: `false`) Whether to clear history after leaving (only for legacy group chats)
      */
     leaveChat(chatId: InputPeerLike, clear?: boolean): Promise<void>
+    /**
+     * Mark a chat as unread
+     *
+     * @param chatId  Chat ID
+     */
+    markChatUnread(chatId: InputPeerLike): Promise<void>
     /**
      * Restrict a user in a supergroup.
      *
@@ -2900,6 +2907,7 @@ export class TelegramClient extends BaseTelegramClient {
     joinChat = joinChat
     kickChatMember = kickChatMember
     leaveChat = leaveChat
+    markChatUnread = markChatUnread
     restrictChatMember = restrictChatMember
     saveDraft = saveDraft
     setChatDefaultPermissions = setChatDefaultPermissions

packages/client/src/methods/chats/mark-chat-unread.ts

@@ -0,0 +1,22 @@
+import { TelegramClient } from '../../client'
+import { InputPeerLike } from '../../types'
+import { normalizeToInputPeer } from '../../utils/peer-utils'
+
+/**
+ * Mark a chat as unread
+ *
+ * @param chatId  Chat ID
+ * @internal
+ */
+export async function markChatUnread(
+    this: TelegramClient,
+    chatId: InputPeerLike
+): Promise<void> {
+    await this.call({
+        _: 'messages.markDialogUnread',
+        peer: {
+            _: 'inputDialogPeer',
+            peer: normalizeToInputPeer(await this.resolvePeer(chatId)),
+        },
+    })
+}