main.py

from fastapi import FastAPI, Request, staticfiles
from fastapi.responses import HTMLResponse
import os
import openai

app = FastAPI()

app.mount("/static", staticfiles.StaticFiles(directory="static"), name="static")

@app.get("/", response_class=HTMLResponse)
async def root(request: Request):
    with open(os.path.join("static", "main.html")) as f:
        return HTMLResponse(f.read())

@app.post("/chat")
async def chat(request: Request):
    data = await request.json()
    message = data["message"]
    openai.api_key = str(os.getenv("OPENAI_API_KEY"))
    model_engine = "gpt-3.5-turbo"
    response = openai.Completion.create(
        engine=model_engine,
        prompt=message,
        max_tokens=3000,
        n=1,
        temperature=1,
        frequency_penalty=0,
        presence_penalty=0
        )
    return response.choices[0]