"""
Hugging Face Spaces entry point.

This file serves as the main entry point for Hugging Face Spaces deployment.
It imports and exposes the FastAPI app from the ai_med_extract package.
"""

import os
import sys
import logging

# Configure logging for Hugging Face Spaces
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(levelname)s - %(message)s"
)

# Add the services/ai-service/src directory to the Python path
current_dir = os.path.dirname(os.path.abspath(__file__))
src_dir = os.path.join(current_dir, "services", "ai-service", "src")
if src_dir not in sys.path:
    sys.path.insert(0, src_dir)

# Detect and set Hugging Face Spaces environment
if os.getenv("SPACE_ID") or os.getenv("SPACE_AUTHOR_NAME"):
    os.environ.setdefault("HF_SPACES", "true")
    logging.info("Detected Hugging Face Spaces environment")

# Set environment variables for Hugging Face Spaces
os.environ.setdefault("FAST_MODE", "true")
os.environ.setdefault("PRELOAD_SMALL_MODELS", "false")
os.environ.setdefault("PYTORCH_CUDA_ALLOC_CONF", "max_split_size_mb:128")
os.environ.setdefault("TOKENIZERS_PARALLELISM", "false")
os.environ.setdefault("OMP_NUM_THREADS", "1")
os.environ.setdefault("MKL_NUM_THREADS", "1")
os.environ.setdefault("DATABASE_URL", "")

# Import and create the app
try:
    from ai_med_extract.app import create_app, initialize_agents  # type: ignore
    logging.info("Creating FastAPI application for HF Spaces...")
    app = create_app(initialize=False)
    initialize_agents(app, preload_small_models=False)
    logging.info("Application initialized successfully")
except Exception as e:
    logging.error(f"Failed to initialize application: {e}")
    import traceback
    logging.error(traceback.format_exc())
    # Create minimal fallback app
    from fastapi import FastAPI
    app = FastAPI(title="Medical AI Service (fallback)")
    
    @app.get("/")
    async def root():
        return {"message": "Medical AI Service - Fallback mode", "error": str(e)}
    
    @app.get("/health")
    async def health():
        return {"status": "degraded", "message": "Initialization failed", "error": str(e)}

# Export the app for Hugging Face Spaces
__all__ = ["app"]