import logging
import asyncio
from typing import Optional

from modules.interfaces.interfaceAppModel import User
from modules.interfaces.interfaceChatModel import ChatWorkflow, UserInputRequest
from modules.shared.timezoneUtils import get_utc_timestamp

logger = logging.getLogger(__name__)

async def chatStart(interfaceChat, currentUser: User, userInput: UserInputRequest, workflowId: Optional[str] = None) -> ChatWorkflow:
    """Starts a new chat or continues an existing one, then launches processing asynchronously."""
    try:
        from modules.workflows.workflowManager import WorkflowManager
        workflowManager = WorkflowManager(interfaceChat, currentUser)
        return await workflowManager.workflowStart(userInput, workflowId)
    except Exception as e:
        logger.error(f"Error starting chat: {str(e)}")
        raise

async def chatStop(interfaceChat, currentUser: User, workflowId: str) -> ChatWorkflow:
    """Stops a running chat."""
    try:
        from modules.workflows.workflowManager import WorkflowManager
        workflowManager = WorkflowManager(interfaceChat, currentUser)
        return await workflowManager.workflowStop(workflowId)
    except Exception as e:
        logger.error(f"Error stopping chat: {str(e)}")
        raise