<?php
// api/analytics.php
require_once dirname(__DIR__) . '/config/config.php';
require_once dirname(__DIR__) . '/config/database.php';

header('Content-Type: application/json');

// Need to be logged in
if (!isset($_SESSION['user_id'])) {
    echo json_encode(['status' => 'error', 'message' => 'Unauthorized']);
    exit;
}

$action = $_REQUEST['action'] ?? '';

// In a real application, these queries would join the `jobs` and `job_timelines` tables 
// to calculate precise response times and SLAs.
if ($action === 'get_dashboard_stats') {
    // Mock response for dashboard
    $data = [
        'avg_response_time' => 2.5,
        'sla_compliance' => 94.2,
        'total_jobs_today' => 128,
        'trend' => [150, 140, 160, 180, 190, 120, 110],
        'sla_breakdown' => [
            'labels' => ['ER', 'OPD1', 'OPD2', 'IPD1', 'IPD2', 'X-Ray', 'OR'],
            'passed' => [50, 45, 30, 40, 35, 60, 20],
            'failed' => [5, 2, 1, 4, 2, 3, 0]
        ]
    ];
    echo json_encode(['status' => 'success', 'data' => $data]);
} else {
    echo json_encode(['status' => 'error', 'message' => 'Unknown action']);
}