From a06c03eda958f710ecac30608a033d3f3ab246b7 Mon Sep 17 00:00:00 2001
From: teidesu <me@tei.su>
Date: Sun, 11 Apr 2021 15:32:38 +0300
Subject: [PATCH] feat(client): setChatTitle and setChatDescription methods

---
 packages/client/src/client.ts                 | 27 +++++++++++++
 .../src/methods/chats/set-chat-description.ts | 31 +++++++++++++++
 .../src/methods/chats/set-chat-title.ts       | 39 +++++++++++++++++++
 3 files changed, 97 insertions(+)
 create mode 100644 packages/client/src/methods/chats/set-chat-description.ts
 create mode 100644 packages/client/src/methods/chats/set-chat-title.ts

diff --git a/packages/client/src/client.ts b/packages/client/src/client.ts
index 6728a78f..785ba23e 100644
--- a/packages/client/src/client.ts
+++ b/packages/client/src/client.ts
@@ -28,7 +28,9 @@ import { getChat } from './methods/chats/get-chat'
 import { getFullChat } from './methods/chats/get-full-chat'
 import { joinChat } from './methods/chats/join-chat'
 import { leaveChat } from './methods/chats/leave-chat'
+import { setChatDescription } from './methods/chats/set-chat-description'
 import { setChatPhoto } from './methods/chats/set-chat-photo'
+import { setChatTitle } from './methods/chats/set-chat-title'
 import { unarchiveChats } from './methods/chats/unarchive-chats'
 import { downloadAsBuffer } from './methods/files/download-buffer'
 import { downloadToFile } from './methods/files/download-file'
@@ -524,6 +526,20 @@ export class TelegramClient extends BaseTelegramClient {
     leaveChat(chatId: InputPeerLike, clear?: boolean): Promise<void> {
         return leaveChat.apply(this, arguments)
     }
+    /**
+     * Change chat description
+     *
+     * You must be an administrator and have the appropriate permissions.
+     *
+     * @param chatId  Chat ID or username
+     * @param description  New chat description, 0-255 characters
+     */
+    setChatDescription(
+        chatId: InputPeerLike,
+        description: string
+    ): Promise<void> {
+        return setChatDescription.apply(this, arguments)
+    }
     /**
      * Set a new chat photo or video.
      *
@@ -544,6 +560,17 @@ export class TelegramClient extends BaseTelegramClient {
     ): Promise<void> {
         return setChatPhoto.apply(this, arguments)
     }
+    /**
+     * Change chat title
+     *
+     * You must be an administrator and have the appropriate permissions.
+     *
+     * @param chatId  Chat ID or username
+     * @param title  New chat title, 1-255 characters
+     */
+    setChatTitle(chatId: InputPeerLike, title: string): Promise<void> {
+        return setChatTitle.apply(this, arguments)
+    }
     /**
      * Unarchive one or more chats
      *
diff --git a/packages/client/src/methods/chats/set-chat-description.ts b/packages/client/src/methods/chats/set-chat-description.ts
new file mode 100644
index 00000000..a937a77e
--- /dev/null
+++ b/packages/client/src/methods/chats/set-chat-description.ts
@@ -0,0 +1,31 @@
+import { TelegramClient } from '../../client'
+import {
+    InputPeerLike,
+    MtCuteInvalidPeerTypeError,
+} from '../../types'
+import { normalizeToInputPeer } from '../../utils/peer-utils'
+
+/**
+ * Change chat description
+ *
+ * You must be an administrator and have the appropriate permissions.
+ *
+ * @param chatId  Chat ID or username
+ * @param description  New chat description, 0-255 characters
+ * @internal
+ */
+export async function setChatDescription(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    description: string
+): Promise<void> {
+    const chat = normalizeToInputPeer(await this.resolvePeer(chatId))
+    if (!(chat._ === 'inputPeerChat' || chat._ === 'inputPeerChannel'))
+        throw new MtCuteInvalidPeerTypeError(chatId, 'chat or channel')
+
+    await this.call({
+        _: 'messages.editChatAbout',
+        peer: chat,
+        about: description
+    })
+}
diff --git a/packages/client/src/methods/chats/set-chat-title.ts b/packages/client/src/methods/chats/set-chat-title.ts
new file mode 100644
index 00000000..7b768911
--- /dev/null
+++ b/packages/client/src/methods/chats/set-chat-title.ts
@@ -0,0 +1,39 @@
+import { TelegramClient } from '../../client'
+import {
+    InputPeerLike,
+    MtCuteInvalidPeerTypeError,
+} from '../../types'
+import { normalizeToInputChannel, normalizeToInputPeer } from '../../utils/peer-utils'
+
+/**
+ * Change chat title
+ *
+ * You must be an administrator and have the appropriate permissions.
+ *
+ * @param chatId  Chat ID or username
+ * @param title  New chat title, 1-255 characters
+ * @internal
+ */
+export async function setChatTitle(
+    this: TelegramClient,
+    chatId: InputPeerLike,
+    title: string
+): Promise<void> {
+    const chat = normalizeToInputPeer(await this.resolvePeer(chatId))
+    if (!(chat._ === 'inputPeerChat' || chat._ === 'inputPeerChannel'))
+        throw new MtCuteInvalidPeerTypeError(chatId, 'chat or channel')
+
+    if (chat._ === 'inputPeerChat') {
+        await this.call({
+            _: 'messages.editChatTitle',
+            chatId: chat.chatId,
+            title
+        })
+    } else {
+        await this.call({
+            _: 'channels.editTitle',
+            channel: normalizeToInputChannel(chat)!,
+            title
+        })
+    }
+}