instrumentation.ts

import * as Sentry from '@sentry/nextjs';

export async function register() {
  if (process.env.NEXT_RUNTIME === 'nodejs') {
    await import('./sentry.server.config');

    // Drain audit log DLQ at startup (non-blocking)
    try {
      const { drainDLQ, getDLQStats } = await import('./lib/audit-dlq');
      const drained = await drainDLQ();
      if (drained > 0) {
        console.log(`[TaxHacker] Drained ${drained} audit log entries from DLQ at startup`);
      }
      // Check if DLQ is non-empty after drain (indicates persistent DB issues)
      const dlqStats = await getDLQStats();
      if (dlqStats.exists) {
        console.error(
          `[TaxHacker] ALERT: Audit log DLQ file still exists after drain (${dlqStats.size} bytes). ` +
          `This indicates persistent database connectivity issues.`
        );
      }
    } catch (error) {
      console.error('[TaxHacker] Error during DLQ startup drain:', error);
    }

    // Startup log: legacy self-hosted auth cookie migration window
    if (process.env.TAXHACKER_SELF_HOSTED === 'true') {
      const { LEGACY_AUTH_CUTOFF } = await import('./lib/self-hosted-auth');
      const now = Date.now();
      const cutoff = LEGACY_AUTH_CUTOFF.getTime();
      if (now < cutoff) {
        const daysUntilCutoff = Math.ceil((cutoff - now) / (1000 * 60 * 60 * 24));
        console.log(
          `[TaxHacker] Legacy auth cookie migration window: ${daysUntilCutoff} days remaining. ` +
          `After ${LEGACY_AUTH_CUTOFF.toISOString().split('T')[0]}, old SHA-256 cookies will be rejected.`
        );
      } else {
        console.log('[TaxHacker] Legacy auth cookie cutoff date has passed. Only new HMAC tokens accepted.');
      }
    }
  }

  if (process.env.NEXT_RUNTIME === 'edge') {
    await import('./sentry.edge.config');
  }
}

export const onRequestError = Sentry.captureRequestError;