from datetime import datetime, timedelta
from celery import chain
import logging
from backend.celery_config import celery_app
from backend.celery_tasks.content_tasks import generate_content_task, publish_post_task

# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

def init_celery_scheduler(supabase_client):
    """
    Initialize the Celery-based task scheduler.
    
    Args:
        supabase_client: Supabase client instance
    """
    logger.info("Initializing Celery scheduler")
    # In a Celery-based approach, we don't need to initialize a scheduler here
    # Tasks will be scheduled through Celery Beat or called directly
    
def schedule_content_generation(schedule: dict, supabase_client_config: dict):
    """
    Schedule content generation task using Celery.
    
    Args:
        schedule (dict): Schedule data
        supabase_client_config (dict): Supabase client configuration
        
    Returns:
        dict: Celery task result
    """
    schedule_id = schedule.get('id')
    user_id = schedule.get('Social_network', {}).get('id_utilisateur')
    
    if not user_id:
        logger.warning(f"No user ID found for schedule {schedule_id}")
        return None
    
    logger.info(f"Scheduling content generation for schedule {schedule_id}")
    
    # Schedule the content generation task
    task = generate_content_task.delay(user_id, schedule_id, supabase_client_config)
    return {
        'task_id': task.id,
        'status': 'scheduled',
        'message': f'Content generation scheduled for schedule {schedule_id}'
    }

def schedule_post_publishing(schedule: dict, supabase_client_config: dict):
    """
    Schedule post publishing task using Celery.
    
    Args:
        schedule (dict): Schedule data
        supabase_client_config (dict): Supabase client configuration
        
    Returns:
        dict: Celery task result
    """
    schedule_id = schedule.get('id')
    logger.info(f"Scheduling post publishing for schedule {schedule_id}")
    
    # Schedule the post publishing task
    task = publish_post_task.delay(schedule_id, supabase_client_config)
    return {
        'task_id': task.id,
        'status': 'scheduled',
        'message': f'Post publishing scheduled for schedule {schedule_id}'
    }

def schedule_content_and_publish(schedule: dict, supabase_client_config: dict):
    """
    Schedule both content generation and post publishing as a chain.
    
    Args:
        schedule (dict): Schedule data
        supabase_client_config (dict): Supabase client configuration
        
    Returns:
        dict: Celery task result
    """
    schedule_id = schedule.get('id')
    user_id = schedule.get('Social_network', {}).get('id_utilisateur')
    
    if not user_id:
        logger.warning(f"No user ID found for schedule {schedule_id}")
        return None
    
    logger.info(f"Scheduling content generation and publishing chain for schedule {schedule_id}")
    
    # Create a chain of tasks: generate content first, then publish
    task_chain = chain(
        generate_content_task.s(user_id, schedule_id, supabase_client_config),
        publish_post_task.s(supabase_client_config)
    )
    
    # Apply the chain asynchronously
    result = task_chain.apply_async()
    
    return {
        'task_id': result.id,
        'status': 'scheduled',
        'message': f'Content generation and publishing chain scheduled for schedule {schedule_id}'
    }