"""
Utilities for interacting with bot from web interface
"""
import logging
from typing import Optional
from bot.modules.task_scheduler.executor import get_app_client

logger = logging.getLogger(__name__)


async def send_otp_to_user(user_id: int, code: str) -> bool:
    """
    Send OTP code to user via Telegram bot
    
    Args:
        user_id: User ID
        code: OTP code
    
    Returns:
        True if successfully sent, False otherwise
    """
    try:
        app_client = get_app_client()
        if not app_client:
            logger.warning(f"Bot client not available for sending OTP to user {user_id}")
            return False
        
        # Check that client is started and connected
        try:
            if not hasattr(app_client, 'is_connected') or not app_client.is_connected:
                logger.warning(f"Bot client not connected for sending OTP to user {user_id}")
                return False
        except Exception as check_error:
            logger.warning(f"Failed to check bot connection status: {check_error}")
            # Continue sending attempt, client might be working
        
        from shared.config import settings
        # Form URL for web interface
        if settings.WEB_HOST == "0.0.0.0":
            login_url = f"localhost:{settings.WEB_PORT}"
        else:
            login_url = f"{settings.WEB_HOST}:{settings.WEB_PORT}"
        
        message = (
            f"🔐 **Ваш код для входа в веб-интерфейс:**\n\n"
            f"**`{code}`**\n\n"
            f"⏰ Код действителен 10 минут\n\n"
            f"🌐 Перейдите на http://{login_url}/admin/login и введите этот код"
        )
        
        try:
            # Try to send message
            result = await app_client.send_message(user_id, message)
            logger.info(f"OTP code successfully sent to user {user_id}, message_id: {result.id if result else 'unknown'}")
            return True
        except Exception as send_error:
            error_msg = str(send_error)
            logger.error(f"Error sending message to user {user_id}: {error_msg}", exc_info=True)
            
            # Check error type for more informative message
            if "chat not found" in error_msg.lower() or "user not found" in error_msg.lower():
                logger.error(f"User {user_id} not found or hasn't started dialog with bot")
            elif "flood" in error_msg.lower():
                logger.error(f"Message sending rate limit exceeded for user {user_id}")
            elif "unauthorized" in error_msg.lower():
                logger.error(f"Bot not authorized or stopped")
            
            return False
    except Exception as e:
        logger.error(f"Critical error sending OTP to user {user_id}: {e}", exc_info=True)
        return False