/**
 * Hooks Metrics API Routes
 * Serves framework enforcement metrics to admin dashboard
 */

const express = require('express');
const router = express.Router();
const fs = require('fs');
const path = require('path');
const { authenticateToken, requireAdmin } = require('../middleware/auth.middleware');

const METRICS_PATH = path.join(__dirname, '../../.claude/metrics/hooks-metrics.json');

/**
 * GET /api/admin/hooks/metrics
 * Get current hooks metrics
 */
router.get('/metrics', authenticateToken, requireAdmin, async (req, res) => {
  try {
    // Check if metrics file exists
    if (!fs.existsSync(METRICS_PATH)) {
      return res.json({
        success: true,
        metrics: {
          hook_executions: [],
          blocks: [],
          session_stats: {}
        }
      });
    }

    // Read metrics
    const metricsData = fs.readFileSync(METRICS_PATH, 'utf8');
    const metrics = JSON.parse(metricsData);

    res.json({
      success: true,
      metrics: metrics
    });
  } catch (error) {
    console.error('Error fetching hooks metrics:', error);
    res.status(500).json({
      success: false,
      error: 'Failed to fetch hooks metrics'
    });
  }
});

module.exports = router;