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, workflowMode: str = "Actionplan") -> ChatWorkflow:
    """
    Starts a new chat or continues an existing one, then launches processing asynchronously.
    
    Args:
        interfaceChat: Chat interface instance
        currentUser: Current user
        userInput: User input request
        workflowId: Optional workflow ID to continue existing workflow
        workflowMode: "Actionplan" for traditional task planning, "React" for iterative react-style processing
    
    Example usage for React mode:
        workflow = await chatStart(interfaceChat, currentUser, userInput, workflowMode="React")
    """
    try:
        from modules.workflows.workflowManager import WorkflowManager
        from modules.services import getInterface as getServices
        services = getServices(currentUser, None)
        workflowManager = WorkflowManager(services)
        workflow = await workflowManager.workflowStart(userInput, workflowId, workflowMode)
        return workflow
    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
        from modules.services import getInterface as getServices
        services = getServices(currentUser, None)
        workflowManager = WorkflowManager(services)
        return await workflowManager.workflowStop(workflowId)
    except Exception as e:
        logger.error(f"Error stopping chat: {str(e)}")
        raise