from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
import logging
import os
import uvicorn
from .routes import router

# Set up logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# Initialize FastAPI with simplified configuration
app = FastAPI(
    title="LLM Engine Service",
    docs_url="/docs",
    redoc_url="/redoc",
    openapi_url="/openapi.json"
)

# Add CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Include the router from routes.py
app.include_router(router)

def main():
    # Load environment variables or configuration here
    host = os.getenv("LLM_ENGINE_HOST", "0.0.0.0")
    port = int(os.getenv("LLM_ENGINE_PORT", "7860"))  # Default to 7860 for Spaces

    # Log startup information
    logger.info(f"Starting LLM Engine service on {host}:{port}, or: ")
    logger.info("Available endpoints:")
    logger.info("  - /")
    logger.info("  - /health")
    logger.info("  - /initialize")
    logger.info("  - /generate")
    logger.info("  - /initialize/custom")
    logger.info("  - /generate/stream")
    logger.info("  - /docs")
    logger.info("  - /redoc")
    logger.info("  - /openapi.json")

    # Start the server
    uvicorn.run(
        app,
        host=host,
        port=port,
        log_level="trace"
    )

if __name__ == "__main__":
    main()