app/api/routes/health.py

"""
Health check and system info endpoints.

Responsabilidad: Verificar el estado de la API y servicios.
"""

from fastapi import APIRouter, Depends
from typing import Dict, Any

from app.api.dependencies import get_forecast_model
from app.domain.interfaces.forecast_model import IForecastModel
from app.infrastructure.config.settings import get_settings
from app.utils.logger import setup_logger

logger = setup_logger(__name__)
settings = get_settings()

router = APIRouter(prefix="/health", tags=["Health"])


@router.get("", response_model=Dict[str, Any])
async def health_check(
    model: IForecastModel = Depends(get_forecast_model)
):
    """
    Health check endpoint.
    
    Verifica que la API esté funcionando y el modelo esté cargado.
    
    Returns:
        Estado de la API y información del modelo
    """
    try:
        model_info = model.get_model_info()
        
        return {
            "status": "ok",
            "version": settings.api_version,
            "model": model_info,
            "message": "Chronos-2 API is running"
        }
    except Exception as e:
        logger.error(f"Health check failed: {e}")
        return {
            "status": "error",
            "version": settings.api_version,
            "error": str(e),
            "message": "API is running but model is not available"
        }


@router.get("/info", response_model=Dict[str, Any])
async def system_info():
    """
    System information endpoint.
    
    Returns:
        Información sobre la arquitectura y configuración
    """
    return {
        "api": {
            "title": settings.api_title,
            "version": settings.api_version,
            "description": settings.api_description
        },
        "architecture": {
            "style": "Clean Architecture",
            "principles": "SOLID",
            "layers": [
                "Presentation (API)",
                "Application (Use Cases)",
                "Domain (Business Logic)",
                "Infrastructure (External Services)"
            ]
        },
        "model": {
            "id": settings.model_id,
            "device": settings.device_map
        },
        "endpoints": {
            "docs": "/docs",
            "health": "/health",
            "forecast": "/forecast",
            "anomaly": "/anomaly",
            "backtest": "/backtest"
        }
    }