<?php
/**
 * Get Template API
 * Returns a ticket template by ID
 */

require_once dirname(__DIR__) . '/helpers/ErrorHandler.php';
ErrorHandler::init();

try {
    session_start();
    require_once dirname(__DIR__) . '/config/config.php';
    require_once dirname(__DIR__) . '/helpers/Database.php';
    require_once dirname(__DIR__) . '/models/TemplateModel.php';

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

    // Check authentication
    if (!isset($_SESSION['user']) || !isset($_SESSION['user']['user_id'])) {
        ErrorHandler::sendUnauthorizedError('Not authenticated');
    }

    // Get template ID from query parameter
    $templateId = $_GET['template_id'] ?? null;

    if (!$templateId || !is_numeric($templateId)) {
        ErrorHandler::sendValidationError(
            ['template_id' => 'Valid template ID required'],
            'Invalid request'
        );
    }

    // Cast to integer for safety
    $templateId = (int)$templateId;

    // Get template
    $conn = Database::getConnection();
    $templateModel = new TemplateModel($conn);
    $template = $templateModel->getTemplateById($templateId);

    if ($template) {
        echo json_encode(['success' => true, 'template' => $template]);
    } else {
        ErrorHandler::sendNotFoundError('Template not found');
    }

} catch (Exception $e) {
    ErrorHandler::log($e->getMessage(), E_ERROR);
    ErrorHandler::sendErrorResponse('Failed to retrieve template', 500, $e);
}