"""Chat management handlers for MAX surface."""
import uuid
from adapter.max.store import ChatStore, RoomMeta


class ChatHandler:
    def __init__(self, store: ChatStore):
        self.store = store

    def handle_new(self, max_chat_id: str, user_id: str, agent_id: str, name: str = None) -> str:
        platform_chat_id = str(uuid.uuid4())
        room = RoomMeta(
            platform_chat_id=platform_chat_id,
            max_chat_id=max_chat_id,
            name=name or "New Chat",
            user_id=user_id,
            agent_id=agent_id,
        )
        self.store.add_room(room)
        return platform_chat_id

    def handle_chats(self, user_id: str) -> str:
        rooms = self.store.list_rooms_for_user(user_id)
        if not rooms:
            return "No active chats."
        lines = [f"  {i+1}. {r.name}" for i, r in enumerate(rooms)]
        return "\n".join(lines)

    def handle_rename(self, max_chat_id: str, new_name: str) -> str:
        room = self.store.get_room_by_max_chat_id(max_chat_id)
        if not room:
            return "Chat not found."
        room.name = new_name
        return f"Chat renamed to: {new_name}"

    def handle_archive(self, max_chat_id: str) -> str:
        room = self.store.get_room_by_max_chat_id(max_chat_id)
        if not room:
            return "Chat not found."
        self.store.remove_room(max_chat_id)
        return "Chat archived."

    def handle_clear(self, max_chat_id: str) -> str:
        room = self.store.get_room_by_max_chat_id(max_chat_id)
        if not room:
            return "Chat not found."
        room.platform_chat_id = str(uuid.uuid4())
        return "Chat context cleared."