from fastapi import FastAPI, HTTPException, status
from pydantic import BaseModel, Field, field_validator
from typing import List, Optional, Union, Dict, Any, Tuple
from contextlib import asynccontextmanager
import os

# Global model instance
model = None


app = FastAPI(
    title="GLiNER Inference Server",
     description="Named Entity Recognition, Relation Extraction, and Summarization API",
     version="1.0.0",
)


@app.get("/health")
async def health_check():
    """Health check endpoint"""
    return {"status": "healthy", "model_loaded": model is not None}


@app.post("/general")
async def general_extraction(request):
    """Named Entity Recognition endpoint"""
    pass


@app.post("/relation-extraction")
async def relation_extraction(request):
    """Relation Extraction endpoint"""
    pass


@app.post("/summarization")
async def summarization(request):
    """Summarization endpoint"""
    pass

if __name__ == "__main__":
    import uvicorn

    port = int(os.getenv("PORT", "8000"))
    uvicorn.run(app, host="0.0.0.0", port=port)