Function login

cli/src/commands/login.ts:238–289

()

}

export async function login(): Promise<void> {
  const config = loadConfig();

  // Preflight: hit the deployment's public info endpoint before opening
  // the browser. Two wins —
  //   1. Fast-fail when the server is unreachable instead of opening a
  //      browser tab that loads nothing and timing out 2 minutes later.
  //   2. Captures shared_domain in the same request so we don't need a
  //      separate fetch after login completes.
  // `/v1/info` is unauthenticated and login runs before we have a key, so we
  // probe it with a raw fetch rather than the SDK client (which requires an
  // apiKey to construct). Distinguish a connection failure (refused, DNS,
  // timeout) — which should abort — from an HTTP-level error (server up, /info
  // absent on an older deployment), which should let login continue.
  let discoveredSharedDomain: string | undefined;
  try {
    const resp = await fetch(`${config.api_url.replace(/\/+$/, "")}/v1/info`);
    if (resp.ok) {
      const info = (await resp.json()) as { shared_domain?: string };
      if (info.shared_domain) {
        discoveredSharedDomain = info.shared_domain;
      }
    }
    // A non-ok response means the server is up but /info is unavailable
    // (older deployment) — continue with login without shared_domain.
  } catch (err) {
    const detail = err instanceof Error ? err.message : String(err);
    throw new Error(
      `could not reach ${config.api_url}: ${detail}. ` +
        `Check the server is running and E2A_URL is correct.`,
    );
  }

  const { apiKey, agentEmail } = await waitForBrowserLogin(config.api_url);

  saveConfig({
    api_key: apiKey,
    agent_email: agentEmail,
    ...(discoveredSharedDomain ? { shared_domain: discoveredSharedDomain } : {}),
  });

  process.stdout.write(`Logged in to ${hostLabel(config.api_url)}.\n`);
  if (discoveredSharedDomain) {
    process.stdout.write(`  Shared domain: ${discoveredSharedDomain}\n`);
  }
  process.stdout.write("Config saved to ~/.e2a/config.json\n");
  if (agentEmail) {
    process.stdout.write(`Active agent: ${agentEmail}\n`);
  } else {
    process.stderr.write("No agents found yet. Run: e2a agents register <slug>\n");
  }
}