#!/usr/bin/env python3
"""
Hugging Face Spaces용 Lily LLM API 서버 진입점
"""

import os
import sys
import logging
import asyncio
import uvicorn
from pathlib import Path

# 프로젝트 루트를 Python path에 추가
project_root = Path(__file__).parent
sys.path.insert(0, str(project_root))

# 환경 변수 설정
os.environ.setdefault("PYTHONPATH", str(project_root))
os.environ.setdefault("HOST", "0.0.0.0")
os.environ.setdefault("PORT", "7860")

# 로깅 설정
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)

def setup_huggingface_environment():
    """Hugging Face Spaces 환경 설정"""
    
    # 필요한 디렉토리 생성
    directories = [
        "data", "logs", "models", "uploads", 
        "vector_stores", "temp", "cache",
        "cache/transformers", "cache/huggingface", 
        "cache/easyocr", "cache/ocr_models"
    ]
    
    for dir_name in directories:
        dir_path = project_root / dir_name
        dir_path.mkdir(exist_ok=True, parents=True)
        logger.info(f"📁 디렉토리 생성: {dir_path}")
    
    # 환경 변수 설정
    env_vars = {
        "TRANSFORMERS_CACHE": str(project_root / "cache" / "transformers"),
        "HF_HOME": str(project_root / "cache" / "huggingface"),
        "TORCH_HOME": str(project_root / "cache" / "torch"),
        "EASYOCR_MODULE_PATH": str(project_root / "cache" / "easyocr"),
        "OCR_MODELS_PATH": str(project_root / "cache" / "ocr_models"),
        "TOKENIZERS_PARALLELISM": "false",
        "OMP_NUM_THREADS": "1",
        "MKL_NUM_THREADS": "1"
    }
    
    for key, value in env_vars.items():
        os.environ[key] = value
        logger.info(f"🔧 환경변수 설정: {key}={value}")

async def main():
    """메인 실행 함수"""
    
    logger.info("🚀 Hugging Face Spaces용 Lily LLM API 서버 시작")
    
    # 환경 설정
    setup_huggingface_environment()
    
    try:
        # FastAPI 앱 import
        from lily_llm_api.app_v2 import app
        
        # 서버 설정
        host = os.getenv("HOST", "0.0.0.0")
        port = int(os.getenv("PORT", "7860"))
        
        logger.info(f"🌐 서버 시작: {host}:{port}")
        
        # Uvicorn 서버 실행
        config = uvicorn.Config(
            app=app,
            host=host,
            port=port,
            log_level="info",
            access_log=True,
            loop="asyncio"
        )
        
        server = uvicorn.Server(config)
        await server.serve()
        
    except Exception as e:
        logger.error(f"❌ 서버 시작 오류: {e}")
        import traceback
        logger.error(f"🔍 상세 오류:\n{traceback.format_exc()}")
        sys.exit(1)

if __name__ == "__main__":
    # Python 3.7+ 호환성을 위한 asyncio 실행
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        logger.info("👋 서버 종료")
    except Exception as e:
        logger.error(f"❌ 실행 오류: {e}")
        sys.exit(1)
        logger.error(f"❌ 실행 오류: {e}")
        sys.exit(1)