<?php

/**
 * @package     Joomla.API
 * @subpackage  com_config
 *
 * @copyright   (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Config\Api\Controller;

use Joomla\CMS\Access\Exception\NotAllowed;
use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Extension\ExtensionHelper;
use Joomla\CMS\Form\Form;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Controller\ApiController;
use Joomla\Component\Config\Administrator\Model\ComponentModel;
use Joomla\Component\Config\Api\View\Component\JsonapiView;
use Tobscure\JsonApi\Exception\InvalidParameterException;

// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * The component controller
 *
 * @since  4.0.0
 */
class ComponentController extends ApiController
{
    /**
     * The content type of the item.
     *
     * @var    string
     * @since  4.0.0
     */
    protected $contentType = 'component';

    /**
     * The default view for the display method.
     *
     * @var    string
     * @since  3.0
     */
    protected $default_view = 'component';

    /**
     * Basic display of a list view
     *
     * @return  static  A \JControllerLegacy object to support chaining.
     *
     * @since   4.0.0
     */
    public function displayList()
    {
        $viewType = $this->app->getDocument()->getType();
        $viewLayout = $this->input->get('layout', 'default', 'string');

        try {
            /** @var JsonapiView $view */
            $view = $this->getView(
                $this->default_view,
                $viewType,
                '',
                ['base_path' => $this->basePath, 'layout' => $viewLayout, 'contentType' => $this->contentType]
            );
        } catch (\Exception $e) {
            throw new \RuntimeException($e->getMessage());
        }

        /** @var ComponentModel $model */
        $model = $this->getModel($this->contentType);

        if (!$model) {
            throw new \RuntimeException(Text::_('JLIB_APPLICATION_ERROR_MODEL_CREATE'), 500);
        }

        // Push the model into the view (as default)
        $view->setModel($model, true);
        $view->set('component_name', $this->input->get('component_name'));

        $view->document = $this->app->getDocument();
        $view->displayList();

        return $this;
    }

    /**
     * Method to edit an existing record.
     *
     * @return  static  A \JControllerLegacy object to support chaining.
     *
     * @since   4.0.0
     */
    public function edit()
    {
        /** @var ComponentModel $model */
        $model = $this->getModel($this->contentType);

        if (!$model) {
            throw new \RuntimeException(Text::_('JLIB_APPLICATION_ERROR_MODEL_CREATE'), 500);
        }

        // Access check.
        if (!$this->allowEdit()) {
            throw new NotAllowed('JLIB_APPLICATION_ERROR_CREATE_RECORD_NOT_PERMITTED', 403);
        }

        $option = $this->input->get('component_name');

        // @todo: Not the cleanest thing ever but it works...
        Form::addFormPath(JPATH_ADMINISTRATOR . '/components/' . $option);

        // Must load after serving service-requests
        $form = $model->getForm();

        $data = json_decode($this->input->json->getRaw(), true);

        $component = ComponentHelper::getComponent($option);
        $oldData   = $component->getParams()->toArray();
        $data      = array_replace($oldData, $data);

        // Validate the posted data.
        $validData = $model->validate($form, $data);

        if ($validData === false) {
            $errors   = $model->getErrors();
            $messages = [];

            for ($i = 0, $n = \count($errors); $i < $n && $i < 3; $i++) {
                if ($errors[$i] instanceof \Exception) {
                    $messages[] = "{$errors[$i]->getMessage()}";
                } else {
                    $messages[] = "{$errors[$i]}";
                }
            }

            throw new InvalidParameterException(implode("\n", $messages));
        }

        // Attempt to save the configuration.
        $data = [
            'params' => $validData,
            'id'     => ExtensionHelper::getExtensionRecord($option, 'component')->extension_id,
            'option' => $option,
        ];

        if (!$model->save($data)) {
            throw new \RuntimeException(Text::_('JLIB_APPLICATION_ERROR_SERVER'), 500);
        }

        return $this;
    }
}