// OpenTelemetry Node SDK bootstrap for the FarmaClic scraper.
// Started as a side-effect require from index.js (CommonJS).
//
// Env vars:
//   OTEL_SERVICE_NAME           — default: farmaclic-scraper
//   OTEL_EXPORTER_OTLP_ENDPOINT — OTLP gRPC endpoint (e.g. http://alloy:4317)

const { NodeSDK } = require('@opentelemetry/sdk-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-grpc');
const { resourceFromAttributes } = require('@opentelemetry/resources');
const {
  ATTR_SERVICE_NAME,
  ATTR_SERVICE_NAMESPACE,
} = require('@opentelemetry/semantic-conventions');

const serviceName = process.env.OTEL_SERVICE_NAME || 'farmaclic-scraper';
const otlpEndpoint = process.env.OTEL_EXPORTER_OTLP_ENDPOINT || 'http://localhost:4317';

const sdk = new NodeSDK({
  resource: resourceFromAttributes({
    [ATTR_SERVICE_NAME]: serviceName,
    [ATTR_SERVICE_NAMESPACE]: 'farmaclic',
  }),
  traceExporter: new OTLPTraceExporter({ url: otlpEndpoint }),
  instrumentations: [
    getNodeAutoInstrumentations({
      '@opentelemetry/instrumentation-fs': { enabled: false },
      '@opentelemetry/instrumentation-dns': { enabled: false },
    }),
  ],
});

sdk.start();

const shutdown = async () => {
  try {
    await sdk.shutdown();
  } catch (err) {
    // eslint-disable-next-line no-console
    console.error('OpenTelemetry shutdown failed', err);
  }
};

process.on('SIGTERM', shutdown);
process.on('SIGINT', shutdown);