<?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\Registry\Registry;

/**
 * Snapshot management API controller.
 *
 * GET  /api/index.php/v1/mokosuiteclient/snapshot  — list snapshots
 * POST /api/index.php/v1/mokosuiteclient/snapshot  — create snapshot
 *
 * @since  02.21.00
 */
class SnapshotController extends BaseController
{
	/**
	 * List all available snapshots.
	 *
	 * @return  void
	 *
	 * @since   02.21.00
	 */
	public function displayList(): void
	{
		$app  = Factory::getApplication();
		$user = $app->getIdentity();

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

		try
		{
			$service = $this->createService();

			$this->sendJson(200, [
				'status'    => 'ok',
				'snapshots' => $service->listSnapshots(),
			]);
		}
		catch (\Throwable $e)
		{
			$this->sendJson(500, [
				'error'   => 'Failed to list snapshots',
				'message' => $e->getMessage(),
			]);
		}
	}

	/**
	 * Create a new snapshot.
	 *
	 * @return  void
	 *
	 * @since   02.21.00
	 */
	public function execute($task = 'snapshot'): 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_plugins'))
		{
			$this->sendJson(403, ['error' => 'Not authorized']);
			return;
		}

		try
		{
			$plugin = PluginHelper::getPlugin('system', 'mokosuiteclient');
			$params = $plugin ? new Registry($plugin->params) : new Registry;

			$body = json_decode($app->input->json->getRaw(), true);
			$name = $body['name']
				?? $params->get('demo_active_baseline', 'default');

			$service = $this->createService();
			$result  = $service->createSnapshot($name);

			$this->sendJson(200, $result);
		}
		catch (\Throwable $e)
		{
			$this->sendJson(500, [
				'error'   => 'Snapshot failed',
				'message' => $e->getMessage(),
			]);
		}
	}

	/**
	 * Create DemoResetService from plugin params.
	 *
	 * @return  \Moko\Plugin\System\MokoSuiteClient\Service\DemoResetService
	 *
	 * @since   02.21.00
	 */
	private function createService()
	{
		$serviceFile = JPATH_PLUGINS . '/task/mokosuiteclientdemo/src/Service/DemoResetService.php';

		if (!file_exists($serviceFile))
		{
			throw new \RuntimeException('DemoResetService not found — is the demo reset plugin installed?');
		}

		require_once $serviceFile;

		$plugin = PluginHelper::getPlugin('system', 'mokosuiteclient');
		$params = $plugin ? new Registry($plugin->params) : new Registry;

		$media = (bool) $params->get('demo_snapshot_include_media', 1);

		return new \Moko\Plugin\Task\MokoSuiteClientDemo\Service\DemoResetService($media);
	}

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