<?php
ini_set('display_errors', 0);
error_reporting(0);
require_once __DIR__ . '/config.php';
require_once __DIR__ . '/glpi_api.php';

header('Content-Type: application/json; charset=utf-8');

if (empty($_SERVER['HTTP_X_REQUESTED_WITH']) || strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) != 'xmlhttprequest') {
    http_response_code(403);
    exit(json_encode(['error' => 'Forbidden']));
}

$user = checkAuth($pdo);
if (!$user) {
    http_response_code(401);
    exit(json_encode(['error' => 'Unauthorized']));
}

$ticketId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
if (!$ticketId) {
    exit(json_encode(['error' => 'Invalid ticket ID']));
}

$glpi = new GlpiApi(GLPI_API_URL, GLPI_APP_TOKEN, GLPI_USERNAME, GLPI_PASSWORD);

$ticket = $glpi->getTicket($ticketId);
if (!$ticket) {
    exit(json_encode(['error' => 'Unable to fetch ticket from GLPI']));
}

// Маппинг статусов GLPI (числовые -> русские названия)
$statusMap = [
    1 => 'Новый',
    2 => 'В обработке',
    3 => 'Закрыт',
    4 => 'Решён',
    5 => 'Отложен',
    6 => 'Ожидает',
];
$priorityMap = [
    1 => 'Низкий',
    2 => 'Средний',
    3 => 'Высокий',
    4 => 'Срочный',
    5 => 'Критический',
];

$statusName = $ticket['status_name'] ?? ($statusMap[$ticket['status']] ?? 'Неизвестно');
$priorityName = $ticket['priority_name'] ?? ($priorityMap[$ticket['priority']] ?? 'Неизвестно');

// Парсим содержимое для получения читаемого описания (без ID)
$contentText = $ticket['content'] ?? '';
$locationName = '';
$computerName = '';
$categoryName = '';

if (preg_match('/ID локации:\s*(\d+)/', $contentText, $m)) {
    $loc = $glpi->getItem('Location', (int)$m[1]);
    if ($loc) $locationName = $loc['completename'] ?? $loc['name'] ?? '';
}
if (preg_match('/ID компьютера:\s*(\d+)/', $contentText, $m)) {
    $comp = $glpi->getItem('Computer', (int)$m[1]);
    if ($comp) $computerName = $comp['name'] ?? '';
}
if (preg_match('/ID категории:\s*(\d+)/', $contentText, $m)) {
    $cat = $glpi->getItem('ITILCategory', (int)$m[1]);
    if ($cat) $categoryName = $cat['completename'] ?? $cat['name'] ?? '';
}

// Чистое описание (убираем строки с ID)
$cleanContent = preg_replace('/ID (локации|компьютера|категории):\s*\d+\s*/', '', $contentText);
$cleanContent = trim(preg_replace('/Описание:\s*/', '', $cleanContent));
$readableContentHtml = nl2br(htmlspecialchars($cleanContent));

// Комментарии (followups)
$followups = $glpi->getTicketFollowups($ticketId);
$processedFollowups = [];
foreach ($followups as $f) {
    $processedFollowups[] = [
        'date' => date('d.m.Y H:i', strtotime($f['date'] ?? $f['date_creation'] ?? 'now')),
        'content' => nl2br(htmlspecialchars($f['content'] ?? '')),
        'author' => htmlspecialchars($f['users_id_name'] ?? ($f['users_name'] ?? 'Система'))
    ];
}

$result = [
    'id' => $ticket['id'],
    'name' => $ticket['name'],
    'content' => $readableContentHtml,
    'status' => $statusName,
    'priority' => $priorityName,
    'date' => date('d.m.Y H:i', strtotime($ticket['date'] ?? $ticket['date_creation'])),
    'solvedate' => isset($ticket['solvedate']) ? date('d.m.Y H:i', strtotime($ticket['solvedate'])) : null,
    'location' => $locationName,
    'computer' => $computerName,
    'category' => $categoryName,
    'followups' => $processedFollowups
];

echo json_encode($result, JSON_UNESCAPED_UNICODE);
exit;