app.js

async function login() {
  await fetch("/api/register", {
    method: "POST",
    headers: {"Content-Type":"application/json"},
    body: JSON.stringify({
      email: "test@mail.com",
      password: "1234"
    })
  });
}

async function generate() {
  let prompt = document.getElementById("prompt").value;

  let res = await fetch("/api/generate", {
    method: "POST",
    headers: {"Content-Type":"application/json"},
    body: JSON.stringify({
      prompt,
      email: "test@mail.com"
    })
  });

  let data = await res.json();

  document.getElementById("result").src = data;
}