function getInstallationUrlFactory(app) {
  let installationUrlBasePromise;
  return async function getInstallationUrl(options = {}) {
    if (!installationUrlBasePromise) {
      installationUrlBasePromise = getInstallationUrlBase(app);
    }
    const installationUrlBase = await installationUrlBasePromise;
    const installationUrl = new URL(installationUrlBase);
    if (options.target_id !== void 0) {
      installationUrl.pathname += "/permissions";
      installationUrl.searchParams.append(
        "target_id",
        options.target_id.toFixed()
      );
    }
    if (options.state !== void 0) {
      installationUrl.searchParams.append("state", options.state);
    }
    return installationUrl.href;
  };
}
async function getInstallationUrlBase(app) {
  const { data: appInfo } = await app.octokit.request("GET /app");
  if (!appInfo) {
    throw new Error("[@octokit/app] unable to fetch metadata for app");
  }
  return `${appInfo.html_url}/installations/new`;
}
export {
  getInstallationUrlFactory
};