from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from llama_cpp import Llama

# Initialize the LLM once when the application starts
llm = Llama.from_pretrained(
    repo_id="hugging-quants/Llama-3.2-1B-Instruct-Q4_K_M-GGUF", 
    filename="llama-3.2-1b-instruct-q4_k_m.gguf"
)

app = FastAPI()

class ChatRequest(BaseModel):
    messages: list[dict]

@app.post("/chat")
async def chat_completion(request: ChatRequest):
    # print(request.messages)
    # test = [{"role": "user", "content": "dsfa"}]
    # print(test)
    # return "haha"
    try:
        response = llm.create_chat_completion(
            messages = request.messages
        )
        return response
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))