Generate an image

const API_KEY = "YOUR_API_KEY";
  const API = "https://api.rendley.com/v1";

  const headers = {
    "Authorization": `Bearer ${API_KEY}`,
    "Content-Type": "application/json",
  };

  // Both endpoints share these three terminal statuses. They differ only in
  // their in-progress names: queued/processing vs pending/running.
  const TERMINAL = ["completed", "failed", "canceled"];

  const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));


  // Generation and export jobs. The finished job carries output.url.
  async function waitForJob(jobId, interval = 5000) {
    let job = null;

    while (job === null || !TERMINAL.includes(job.status)) {
      await sleep(interval);

      const response = await fetch(`${API}/jobs/${jobId}`, { headers });

      if (!response.ok) {
        throw new Error("Job lookup failed: " + response.status);
      }

      const body = await response.json();

      job = body.data;
      console.log("Job status:", job.status);
    }

    if (job.status !== "completed") {
      throw new Error("Job " + job.status + ": " + (job.error || ""));
    }

    return job;
  }


  // Agent jobs. The finished job carries project_id, thread_id and
  // last_message, but no output: export the project to get a file.
  // onPause runs when an interactive run stops to ask something.
  async function waitForAgentJob(jobId, interval = 5000, onPause) {
    let job = null;

    while (job === null || !TERMINAL.includes(job.status)) {
      // This endpoint long-polls. Sleep anyway, so a fast response
      // cannot turn this into a tight request loop.
      await sleep(interval);

      const response = await fetch(`${API}/agent/jobs/${jobId}`, { headers });

      if (!response.ok) {
        throw new Error("Job lookup failed: " + response.status);
      }

      const body = await response.json();

      job = body.data;
      console.log("Edit status:", job.status);

      // Only interactive runs reach this; unattended runs never pause.
      if (job.status === "waiting_input" && onPause) {
        await onPause(job);
      }
    }

    if (job.status !== "completed") {
      throw new Error("The edit did not finish: " + (job.error || job.reason));
    }

    return job;
  }