app.py

from fastapi import FastAPI, HTTPException
from fastapi.responses import StreamingResponse
import requests
import json


app = FastAPI()


# Ollama internal URL
OLLAMA_BASE_URL = "http://localhost:11434"


# Generic proxy for other API endpoints
@app.get("/api/{path:path}")
async def ollama_proxy_get(path: str, query: str = None):
   url = f"{OLLAMA_BASE_URL}/api/{path}"
   params = {"query": query} if query else {}
   try:
       response = requests.get(url, params=params)
       response.raise_for_status()
       return response.json()
   except requests.exceptions.RequestException as e:
       raise HTTPException(status_code=500, detail=str(e))


# Handle /api/chat specifically
@app.post("/api/chat")
async def ollama_chat(body: dict):
   url = f"{OLLAMA_BASE_URL}/api/chat"
   try:
       # Forward the request to Ollama with streaming support
       response = requests.post(url, json=body, stream=True)
       response.raise_for_status()


       # Stream the response back to the client
       def generate():
           for chunk in response.iter_lines():
               if chunk:
                   yield chunk + b"\n"


       return StreamingResponse(generate(), media_type="text/event-stream")
   except requests.exceptions.RequestException as e:
       raise HTTPException(status_code=500, detail=f"Ollama error: {str(e)}")


@app.get("/")
async def root():
   return {"message": "Ollama API proxy running on Hugging Face Spaces!"}