feat: add poll creation functionality

- Implement create_poll tool using Telethon's native poll API
- Support for multiple choice, quiz mode, public votes, and close dates

README.md

@@ -73,6 +73,7 @@ This MCP server exposes a huge suite of Telegram tools. **Every major Telegram/T
 - **get_history(chat_id, limit)**: Full chat history
 - **get_pinned_messages(chat_id)**: List pinned messages
 - **get_last_interaction(contact_id)**: Most recent message with a contact
+- **create_poll(chat_id, question, options, multiple_choice, quiz_mode, public_votes, close_date)**: Create a poll
 
 ### Contact Management
 - **list_contacts()**: List all contacts

main.py

@@ -2623,6 +2623,79 @@ async def get_pinned_messages(chat_id: int) -> str:
         return log_and_format_error("get_pinned_messages", e, chat_id=chat_id)
 
 
+@mcp.tool()
+async def create_poll(
+    chat_id: int,
+    question: str,
+    options: list,
+    multiple_choice: bool = False,
+    quiz_mode: bool = False,
+    public_votes: bool = True,
+    close_date: str = None,
+) -> str:
+    """
+    Create a poll in a chat using Telegram's native poll feature.
+
+    Args:
+        chat_id: The ID of the chat to send the poll to
+        question: The poll question
+        options: List of answer options (2-10 options)
+        multiple_choice: Whether users can select multiple answers
+        quiz_mode: Whether this is a quiz (has correct answer)
+        public_votes: Whether votes are public
+        close_date: Optional close date in ISO format (YYYY-MM-DD HH:MM:SS)
+    """
+    try:
+        entity = await client.get_entity(chat_id)
+
+        # Validate options
+        if len(options) < 2:
+            return "Error: Poll must have at least 2 options."
+        if len(options) > 10:
+            return "Error: Poll can have at most 10 options."
+
+        # Parse close date if provided
+        close_date_obj = None
+        if close_date:
+            try:
+                close_date_obj = datetime.fromisoformat(close_date.replace("Z", "+00:00"))
+            except ValueError:
+                return f"Invalid close_date format. Use YYYY-MM-DD HH:MM:SS format."
+
+        # Create the poll using InputMediaPoll with SendMediaRequest
+        from telethon.tl.types import InputMediaPoll, Poll, PollAnswer, TextWithEntities
+        import random
+
+        poll = Poll(
+            id=random.randint(0, 2**63 - 1),
+            question=TextWithEntities(text=question, entities=[]),
+            answers=[
+                PollAnswer(text=TextWithEntities(text=option, entities=[]), option=bytes([i]))
+                for i, option in enumerate(options)
+            ],
+            multiple_choice=multiple_choice,
+            quiz=quiz_mode,
+            public_voters=public_votes,
+            close_date=close_date_obj,
+        )
+
+        result = await client(
+            functions.messages.SendMediaRequest(
+                peer=entity,
+                media=InputMediaPoll(poll=poll),
+                message="",
+                random_id=random.randint(0, 2**63 - 1),
+            )
+        )
+
+        return f"Poll created successfully in chat {chat_id}."
+    except Exception as e:
+        logger.exception(f"create_poll failed (chat_id={chat_id}, question='{question}')")
+        return log_and_format_error(
+            "create_poll", e, chat_id=chat_id, question=question, options=options
+        )
+
+
 if __name__ == "__main__":
     nest_asyncio.apply()