<?php

/**
 * @package     MokoSuiteCross
 * @subpackage  com_mokosuitecross
 * @author      Moko Consulting <hello@mokoconsulting.tech>
 * @copyright   Copyright (C) 2026 Moko Consulting. All rights reserved.
 * @license     GNU General Public License version 3 or later; see LICENSE
 * SPDX-License-Identifier: GPL-3.0-or-later
 */

namespace Joomla\Component\MokoSuiteCross\Administrator\Controller;

defined('_JEXEC') or die;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Controller\BaseController;
use Joomla\CMS\Session\Session;
use Joomla\CMS\Uri\Uri;
use Joomla\Component\MokoSuiteCross\Administrator\Helper\SocialImageHelper;

class SocialImageController extends BaseController
{
    public function generate(): void
    {
        if (!Session::checkToken('get')) {
            echo json_encode(['success' => false, 'error' => 'Invalid token']);
            $this->app->close();

            return;
        }

        $user = $this->app->getIdentity();

        if (!$user->authorise('core.manage', 'com_mokosuitecross')) {
            echo json_encode(['success' => false, 'error' => 'Permission denied']);
            $this->app->close();

            return;
        }

        $articleId = $this->input->getInt('article_id', 0);

        if ($articleId < 1) {
            echo json_encode(['success' => false, 'error' => 'Missing article ID']);
            $this->app->close();

            return;
        }

        $db    = Factory::getDbo();
        $query = $db->getQuery(true)
            ->select($db->quoteName(['id', 'title', 'images']))
            ->from($db->quoteName('#__content'))
            ->where($db->quoteName('id') . ' = ' . $articleId);
        $db->setQuery($query);
        $article = $db->loadObject();

        if (!$article) {
            echo json_encode(['success' => false, 'error' => 'Article not found']);
            $this->app->close();

            return;
        }

        $params   = ComponentHelper::getParams('com_mokosuitecross');
        $siteName = $params->get('social_image_site_name', '') ?: Factory::getApplication()->get('sitename', '');

        $options = [
            'bg_color'  => $params->get('social_image_bg_color', '#1a1a2e'),
            'text_color' => $params->get('social_image_text_color', '#ffffff'),
            'overlay'   => $params->get('social_image_overlay', 'dark'),
        ];

        $backgroundPath = null;
        $images = json_decode($article->images ?? '{}', true);

        if (!empty($images['image_intro'])) {
            $backgroundPath = JPATH_ROOT . '/' . ltrim($images['image_intro'], '/');
        } elseif (!empty($images['image_fulltext'])) {
            $backgroundPath = JPATH_ROOT . '/' . ltrim($images['image_fulltext'], '/');
        }

        try {
            $imagePath = SocialImageHelper::generate($article->title, $siteName, $backgroundPath, $options);
            $imageUrl  = str_replace(JPATH_ROOT, Uri::root(true), str_replace('\\', '/', $imagePath));

            $result = ['success' => true, 'image_url' => $imageUrl, 'image_path' => $imagePath];
        } catch (\Throwable $e) {
            $result = ['success' => false, 'error' => $e->getMessage()];
        }

        $this->app->setHeader('Content-Type', 'application/json; charset=utf-8');
        echo json_encode($result);
        $this->app->close();
    }
}