#!/usr/bin/env node

/**
 * Capture Baseline Metrics
 *
 * Run single-instance COSMO and capture performance baseline.
 * All future single-instance runs will be compared against this.
 *
 * Usage: npm run test:baseline
 */

const fs = require('fs');
const path = require('path');

const RESULTS_DIR = path.join(__dirname, '../../.results');

async function captureBaseline() {
  console.log('[Baseline] Starting single-instance baseline capture...');

  // Ensure results directory exists
  if (!fs.existsSync(RESULTS_DIR)) {
    fs.mkdirSync(RESULTS_DIR, { recursive: true });
  }

  // TODO Phase A: Run single COSMO instance and capture:
  // - Cycle time (avg, p50, p95, p99)
  // - Memory usage (avg, peak)
  // - Telemetry: logs, metrics, events
  // - State validation: startup, crash recovery, shutdown
  // - Resource limits: CPU usage, max memory
  // - Timeout protection: no hanging operations

  const baseline = {
    timestamp: new Date().toISOString(),
    version: '1.0.0-phase-a',
    metrics: {
      cycleTime: {
        avg: null, // ms
        p50: null,
        p95: null,
        p99: null,
      },
      memory: {
        avg: null, // MB
        peak: null,
      },
      telemetry: {
        logsEmitted: 0,
        metricsEmitted: 0,
        eventsEmitted: 0,
      },
      validation: {
        startupValid: false,
        crashRecoveryValid: false,
        shutdownClean: false,
      },
      resources: {
        cpuUsagePercent: null,
        maxMemoryMB: null,
      },
    },
    checks: {
      stateValidation: 'PENDING',
      crashRecovery: 'PENDING',
      telemetryEmission: 'PENDING',
      resourceLimits: 'PENDING',
      timeoutProtection: 'PENDING',
    },
  };

  // Save baseline
  const baselinePath = path.join(RESULTS_DIR, 'baseline-single-instance.json');
  fs.writeFileSync(baselinePath, JSON.stringify(baseline, null, 2));
  console.log(`[Baseline] Saved to ${baselinePath}`);

  // Summary
  console.log('[Baseline] Baseline capture complete');
  console.log(`[Baseline] Future runs will be compared against this baseline`);
}

captureBaseline().catch((err) => {
  console.error('[Baseline] Error:', err.message);
  process.exit(1);
});
