<?php
require_once __DIR__ . '/../db/config.php';
require_once __DIR__ . '/../helpers.php';

// Prevent caching
header('Cache-Control: no-cache, no-store, must-revalidate');
header('Pragma: no-cache');
header('Expires: 0');
header('Content-Type: application/json');

$db = db();
$doctor_id = $_GET['doctor_id'] ?? null;

if (!$doctor_id) {
    echo json_encode(['success' => false, 'error' => 'Missing doctor_id']);
    exit;
}

try {
    // $doctor_id is expected to be employee_id now
    $stmt = $db->prepare("
        SELECT start_date, end_date, reason 
        FROM leave_requests 
        WHERE employee_id = ? AND status = 'Approved' AND end_date >= CURDATE()
    ");
    $stmt->execute([$doctor_id]);
    $holidays = $stmt->fetchAll(PDO::FETCH_ASSOC);

    echo json_encode(['success' => true, 'holidays' => $holidays]);
} catch (PDOException $e) {
    echo json_encode(['success' => false, 'error' => 'DB Error: ' . $e->getMessage()]);
}