Function handleApi

telemetry-dashboard/src/api.ts:795–827

(env: Env, url: URL)

 * turns what comes back into a Response.
 */
export async function handleApi(env: Env, url: URL): Promise<ApiResult> {
  if (url.pathname === '/api/session') return { body: { authenticated: true } };
  if (url.pathname === '/api/health') return health(env);
  if (url.pathname === '/api/meta') return meta(env);

  const ranged = new Set(['/api/summary', '/api/timeseries', '/api/breakdown', '/api/activation', '/api/retention']);
  if (!ranged.has(url.pathname)) return fail('not found', 404);

  const range = parseRange(url);
  if (isApiResult(range)) return range;

  try {
    switch (url.pathname) {
      case '/api/summary':
        return await summary(env, range);
      case '/api/timeseries':
        return await timeseries(env, url, range);
      case '/api/breakdown':
        return await breakdown(env, url, range);
      case '/api/activation':
        return await activation(env, url, range);
      case '/api/retention':
        return await retention(env, range);
      default:
        return fail('not found', 404);
    }
  } catch (err) {
    // The query failed, not the caller. Log the cause, tell the page something
    // it can put in the panel, and let the other panels carry on.
    console.error(JSON.stringify({ msg: 'api query failed', path: url.pathname, err: String(err) }));
    return { body: { error: 'query failed' }, status: 503 };
  }
}