"""
Celery tasks for data retention and cleanup.
"""
import logging
import requests
import os
from celery import shared_task

logger = logging.getLogger(__name__)

SUPABASE_URL = os.environ.get('SUPABASE_URL', 'https://api.thrillwiki.com')
SUPABASE_SERVICE_KEY = os.environ.get('SUPABASE_SERVICE_ROLE_KEY')


@shared_task(bind=True, name='monitoring.run_data_retention_cleanup')
def run_data_retention_cleanup(self):
    """
    Run comprehensive data retention cleanup.
    Cleans up old metrics, anomaly detections, alerts, and incidents.
    Runs daily at 3 AM.
    """
    logger.info("Starting data retention cleanup")
    
    if not SUPABASE_SERVICE_KEY:
        logger.error("SUPABASE_SERVICE_ROLE_KEY not configured")
        return {'success': False, 'error': 'Missing service key'}
    
    try:
        # Call the Supabase RPC function
        headers = {
            'apikey': SUPABASE_SERVICE_KEY,
            'Authorization': f'Bearer {SUPABASE_SERVICE_KEY}',
            'Content-Type': 'application/json',
        }
        
        response = requests.post(
            f'{SUPABASE_URL}/rest/v1/rpc/run_data_retention_cleanup',
            headers=headers,
            timeout=60
        )
        
        if response.status_code == 200:
            result = response.json()
            logger.info(f"Data retention cleanup completed: {result}")
            return result
        else:
            logger.error(f"Data retention cleanup failed: {response.status_code} - {response.text}")
            return {'success': False, 'error': response.text}
            
    except Exception as e:
        logger.error(f"Error in data retention cleanup: {e}", exc_info=True)
        raise


@shared_task(bind=True, name='monitoring.cleanup_old_metrics')
def cleanup_old_metrics(self, retention_days: int = 30):
    """
    Clean up old metric time series data.
    Runs daily to remove metrics older than retention period.
    """
    logger.info(f"Cleaning up metrics older than {retention_days} days")
    
    if not SUPABASE_SERVICE_KEY:
        logger.error("SUPABASE_SERVICE_ROLE_KEY not configured")
        return {'success': False, 'error': 'Missing service key'}
    
    try:
        headers = {
            'apikey': SUPABASE_SERVICE_KEY,
            'Authorization': f'Bearer {SUPABASE_SERVICE_KEY}',
            'Content-Type': 'application/json',
        }
        
        response = requests.post(
            f'{SUPABASE_URL}/rest/v1/rpc/cleanup_old_metrics',
            headers=headers,
            json={'retention_days': retention_days},
            timeout=30
        )
        
        if response.status_code == 200:
            deleted_count = response.json()
            logger.info(f"Cleaned up {deleted_count} old metrics")
            return {'success': True, 'deleted_count': deleted_count}
        else:
            logger.error(f"Metrics cleanup failed: {response.status_code} - {response.text}")
            return {'success': False, 'error': response.text}
            
    except Exception as e:
        logger.error(f"Error in metrics cleanup: {e}", exc_info=True)
        raise


@shared_task(bind=True, name='monitoring.cleanup_old_anomalies')
def cleanup_old_anomalies(self, retention_days: int = 30):
    """
    Clean up old anomaly detections.
    Archives resolved anomalies and deletes very old unresolved ones.
    """
    logger.info(f"Cleaning up anomalies older than {retention_days} days")
    
    if not SUPABASE_SERVICE_KEY:
        logger.error("SUPABASE_SERVICE_ROLE_KEY not configured")
        return {'success': False, 'error': 'Missing service key'}
    
    try:
        headers = {
            'apikey': SUPABASE_SERVICE_KEY,
            'Authorization': f'Bearer {SUPABASE_SERVICE_KEY}',
            'Content-Type': 'application/json',
        }
        
        response = requests.post(
            f'{SUPABASE_URL}/rest/v1/rpc/cleanup_old_anomalies',
            headers=headers,
            json={'retention_days': retention_days},
            timeout=30
        )
        
        if response.status_code == 200:
            result = response.json()
            logger.info(f"Cleaned up anomalies: {result}")
            return {'success': True, 'result': result}
        else:
            logger.error(f"Anomalies cleanup failed: {response.status_code} - {response.text}")
            return {'success': False, 'error': response.text}
            
    except Exception as e:
        logger.error(f"Error in anomalies cleanup: {e}", exc_info=True)
        raise


@shared_task(bind=True, name='monitoring.get_retention_stats')
def get_retention_stats(self):
    """
    Get current data retention statistics.
    Shows record counts and storage size for monitored tables.
    """
    logger.info("Fetching data retention statistics")
    
    if not SUPABASE_SERVICE_KEY:
        logger.error("SUPABASE_SERVICE_ROLE_KEY not configured")
        return {'success': False, 'error': 'Missing service key'}
    
    try:
        headers = {
            'apikey': SUPABASE_SERVICE_KEY,
            'Authorization': f'Bearer {SUPABASE_SERVICE_KEY}',
            'Content-Type': 'application/json',
        }
        
        response = requests.get(
            f'{SUPABASE_URL}/rest/v1/data_retention_stats',
            headers=headers,
            timeout=10
        )
        
        if response.status_code == 200:
            stats = response.json()
            logger.info(f"Retrieved retention stats for {len(stats)} tables")
            return {'success': True, 'stats': stats}
        else:
            logger.error(f"Failed to get retention stats: {response.status_code} - {response.text}")
            return {'success': False, 'error': response.text}
            
    except Exception as e:
        logger.error(f"Error getting retention stats: {e}", exc_info=True)
        raise