app.js

import express from "express";
const app = express();

const responses = {
 "dog": "images/dog.jpg",
 "cat": "images/cat.jpg",
 "car": "images/car.jpg",
};

app.use(express.json());

app.post("/generate-image", (req, res) => {
 let { model } = req.body;
 if (!model) {
    return res.status(400).json({ error: "No model provided" });
 }
 if (!responses[model]) {
    return res.status(400).json({ error: "Invalid model" });
 }
 res.json({ imagePath: responses[model] });
});

app.listen(3000, () => {
 console.log("API started on port 3000");
});