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

namespace Moko\Component\MokoSuiteClient\Api\Controller;

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Controller\BaseController;
use Joomla\CMS\Plugin\PluginHelper;
use Joomla\CMS\Uri\Uri;
use Joomla\CMS\Version;
use Joomla\Registry\Registry;

/**
 * Dashboard summary API controller.
 *
 * GET /api/index.php/v1/mokosuiteclient/dashboard
 *
 * Returns a combined payload of site info and feature plugin states,
 * suitable for remote dashboards and monitoring.
 *
 * @since  02.32.00
 */
class DashboardController extends BaseController
{
	/**
	 * Return dashboard summary data.
	 *
	 * @return  void
	 */
	public function displayList(): void
	{
		$app  = Factory::getApplication();
		$user = $app->getIdentity();

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

			return;
		}

		$config = Factory::getConfig();
		$db     = Factory::getDbo();

		// Package version
		$query = $db->getQuery(true)
			->select($db->quoteName('manifest_cache'))
			->from($db->quoteName('#__extensions'))
			->where($db->quoteName('element') . ' = ' . $db->quote('pkg_mokosuiteclient'))
			->where($db->quoteName('type') . ' = ' . $db->quote('package'));
		$db->setQuery($query);
		$pkgCache = json_decode($db->loadResult() ?? '{}');

		// Feature plugins
		$query = $db->getQuery(true)
			->select([
				$db->quoteName('extension_id'),
				$db->quoteName('name'),
				$db->quoteName('element'),
				$db->quoteName('folder'),
				$db->quoteName('enabled'),
				$db->quoteName('manifest_cache'),
			])
			->from($db->quoteName('#__extensions'))
			->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
			->where($db->quoteName('folder') . ' = ' . $db->quote('system'))
			->where('(' . $db->quoteName('element') . ' = ' . $db->quote('mokosuiteclient')
				. ' OR ' . $db->quoteName('element') . ' LIKE ' . $db->quote('mokosuiteclient\\_%') . ')')
			->order($db->quoteName('element') . ' ASC');
		$db->setQuery($query);
		$pluginRows = $db->loadObjectList() ?: [];

		$plugins = [];

		foreach ($pluginRows as $row)
		{
			$manifest  = json_decode($row->manifest_cache ?? '{}');
			$plugins[] = [
				'extension_id' => (int) $row->extension_id,
				'name'         => $row->name,
				'element'      => $row->element,
				'enabled'      => (bool) $row->enabled,
				'version'      => $manifest->version ?? '',
			];
		}

		// Quick health checks
		$dbOk = true;

		try
		{
			$db->setQuery('SELECT 1');
			$db->loadResult();
		}
		catch (\Throwable $e)
		{
			$dbOk = false;
		}

		$freeDiskMb = null;
		$free       = @disk_free_space(JPATH_ROOT);

		if ($free !== false)
		{
			$freeDiskMb = round($free / 1048576);
		}

		$this->sendJson(200, [
			'status'    => 'ok',
			'timestamp' => gmdate('Y-m-d\TH:i:s\Z'),
			'site'      => [
				'name'              => $config->get('sitename', ''),
				'url'               => rtrim(Uri::root(), '/'),
				'mokosuiteclient_version'  => $pkgCache->version ?? '',
				'joomla_version'    => (new Version())->getShortVersion(),
				'php_version'       => PHP_VERSION,
				'db_type'           => $db->getServerType(),
				'debug'             => (bool) $config->get('debug'),
				'offline'           => (bool) $config->get('offline'),
				'caching'           => (int) $config->get('caching'),
			],
			'health'    => [
				'database'     => $dbOk ? 'ok' : 'error',
				'free_disk_mb' => $freeDiskMb,
			],
			'plugins'   => $plugins,
		]);
	}

	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_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
		$app->close();
	}
}