import express from "express";
import fetch from "node-fetch";

const app = express();
app.use(express.json());

const API_KEY = process.env.OPENAI_API_KEY;

const SYSTEM_PROMPT = `
Kamu adalah ASISTEN GURU SEJARAH KEBUDAYAAN ISLAM (SKI).
Batasi jawaban hanya pada SKI.
`;

app.post("/chat", async (req, res) => {
  const userQuestion = req.body.question;

  const response = await fetch("https://api.openai.com/v1/chat/completions", {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "Authorization": "Bearer " + API_KEY
    },
    body: JSON.stringify({
      model: "gpt-4o-mini",
      messages: [
        { role: "system", content: SYSTEM_PROMPT },
        { role: "user", content: userQuestion }
      ]
    })
  });

  const data = await response.json();
  res.json({ answer: data.choices[0].message.content });
});

app.listen(3000, () =>
  console.log("Server Asisten Guru SKI berjalan")
);