import { isPresent } from '@/utils/misc';

const secretKey = process.env.ILLUMA_SECRET_KEY;
const publicKey = process.env.ILLUMA_PUBLIC_KEY;
const baseUrl = process.env.ILLUMA_BASE_URL;
const environment =
  process.env.ILLUMA_ENVIRONMENT ?? process.env.NODE_ENV ?? 'development';

if (isPresent(secretKey) && isPresent(publicKey) && isPresent(baseUrl)) {
  /**
   * Dynamic import: @illuma-ai/observability-otel and @opentelemetry/sdk-node
   * are dependencies. Gracefully skip if import fails.
   */
  Promise.all([
    import('@opentelemetry/sdk-node'),
    import('@illuma-ai/observability-otel'),
  ])
    .then(([{ NodeSDK }, { IllumaSpanProcessor }]) => {
      const spanProcessor = new IllumaSpanProcessor({
        publicKey: publicKey!,
        secretKey: secretKey!,
        baseUrl: baseUrl!,
        environment,
      });

      const sdk = new NodeSDK({
        spanProcessors: [spanProcessor],
      });

      sdk.start();
    })
    .catch((err: unknown) => {
      if (
        err instanceof Error &&
        (err as NodeJS.ErrnoException).code !== 'ERR_MODULE_NOT_FOUND'
      ) {
        console.warn(
          '[instrumentation] Failed to initialize OTel:',
          (err as Error).message
        );
      }
    });
}