"""
Celery Application - ServiceManagerWeb Workers

Configuración principal de Celery para tareas asíncronas
"""

from celery import Celery
from celery.schedules import crontab
import os
from app.core.config import get_settings
from app.core.logging import setup_logging

# Setup logging
setup_logging()

# Get settings
settings = get_settings()

# Create Celery application
celery_app = Celery(
    "servicemanager-workers",
    broker=settings.CELERY_BROKER_URL,
    backend=settings.CELERY_RESULT_BACKEND,
    include=[
        "app.tasks.email_tasks",
        "app.tasks.sla_tasks", 
        "app.tasks.maintenance_tasks",
        "app.tasks.notification_tasks"
    ]
)

# Configure Celery
celery_app.conf.update(
    # Task settings
    task_serializer="json",
    accept_content=["json"],
    result_serializer="json",
    timezone="UTC",
    enable_utc=True,
    
    # Result backend settings
    result_expires=3600,  # 1 hour
    result_persistent=True,
    
    # Worker settings
    worker_prefetch_multiplier=1,
    worker_max_tasks_per_child=1000,
    worker_disable_rate_limits=False,
    
    # Task routing
    task_routes={
        "app.tasks.email_tasks.*": {"queue": "email"},
        "app.tasks.sla_tasks.*": {"queue": "sla"},
        "app.tasks.maintenance_tasks.*": {"queue": "maintenance"},
        "app.tasks.notification_tasks.*": {"queue": "notifications"},
    },
    
    # Queue configuration
    task_default_queue="default",
    task_default_exchange="default",
    task_default_routing_key="default",
    
    # Beat schedule for periodic tasks
    beat_schedule={
        # Check SLA violations every 5 minutes
        "check-sla-violations": {
            "task": "app.tasks.sla_tasks.check_sla_violations",
            "schedule": crontab(minute="*/5"),
        },
        
        # Send daily digest at 8:00 AM
        "send-daily-digest": {
            "task": "app.tasks.notification_tasks.send_daily_digest",
            "schedule": crontab(hour=8, minute=0),
        },
        
        # Clean old logs weekly on Sunday at 2:00 AM
        "cleanup-old-logs": {
            "task": "app.tasks.maintenance_tasks.cleanup_old_logs",
            "schedule": crontab(hour=2, minute=0, day_of_week=0),
        },
        
        # Generate weekly reports on Monday at 9:00 AM
        "generate-weekly-reports": {
            "task": "app.tasks.maintenance_tasks.generate_weekly_reports",
            "schedule": crontab(hour=9, minute=0, day_of_week=1),
        },
        
        # Health check every minute
        "worker-health-check": {
            "task": "app.tasks.maintenance_tasks.health_check",
            "schedule": crontab(minute="*/1"),
        },
    },
    
    # Error handling
    task_reject_on_worker_lost=True,
    task_acks_late=True,
    
    # Monitoring
    worker_send_task_events=True,
    task_send_sent_event=True,
    
    # Security
    worker_hijack_root_logger=False,
    worker_log_format="[%(asctime)s: %(levelname)s/%(processName)s] %(message)s",
    worker_task_log_format="[%(asctime)s: %(levelname)s/%(processName)s][%(task_name)s(%(task_id)s)] %(message)s",
)

# Optional: Configure SSL if needed
if settings.ENVIRONMENT == "production":
    # Enable SSL for production
    celery_app.conf.update(
        broker_use_ssl=True,
        redis_backend_use_ssl=True,
    )


# Import all tasks to register them
from app.tasks import (
    email_tasks,
    sla_tasks,
    maintenance_tasks,
    notification_tasks
)


if __name__ == "__main__":
    celery_app.start()