<?php
/**
 * @package     MokoWaaS
 * @subpackage  com_mokowaas
 * @copyright   Copyright (C) 2026 Moko Consulting. All rights reserved.
 * @license     GNU General Public License version 3 or later; see LICENSE
 */

namespace Moko\Component\MokoWaaS\Api\Controller;

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Controller\BaseController;

/**
 * Update check API controller.
 *
 * POST /api/index.php/v1/mokowaas/update
 *
 * @since  1.0.0
 */
class UpdateController extends BaseController
{
	/**
	 * Trigger Joomla update finder and return count of available updates.
	 *
	 * @return  void
	 *
	 * @since   1.0.0
	 */
	public function execute($task = 'update'): void
	{
		$app = Factory::getApplication();

		if ($app->input->getMethod() !== 'POST')
		{
			$this->sendJson(405, ['error' => 'POST required']);
			return;
		}

		$user = $app->getIdentity();
		if (!$user->authorise('core.manage', 'com_installer'))
		{
			$this->sendJson(403, ['error' => 'Not authorized']);
			return;
		}

		try
		{
			$db = Factory::getDbo();

			$db->setQuery($db->getQuery(true)->delete($db->quoteName('#__updates')));
			$db->execute();

			\Joomla\CMS\Updater\Updater::getInstance()->findUpdates();

			$db->setQuery(
				$db->getQuery(true)
					->select('COUNT(*)')
					->from($db->quoteName('#__updates'))
					->where($db->quoteName('extension_id') . ' != 0')
			);
			$count = (int) $db->loadResult();

			$this->sendJson(200, [
				'status'        => 'ok',
				'updates_found' => $count,
				'message'       => $count . ' update(s) available',
			]);
		}
		catch (\Throwable $e)
		{
			$this->sendJson(500, [
				'error'   => 'Update check failed',
				'message' => $e->getMessage(),
			]);
		}
	}

	/**
	 * @param   int    $code     HTTP status code
	 * @param   array  $payload  Response data
	 * @return  void
	 */
	private function sendJson(int $code, array $payload): void
	{
		$app = Factory::getApplication();
		$app->setHeader('Content-Type', 'application/json', true);
		$app->setHeader('Status', (string) $code, true);
		echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
		$app->close();
	}
}