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<?php
/**
 * @package         Regular Labs Library
 * @version         23.9.3039
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            https://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         GNU General Public License version 2 or later
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory as JFactory;
use Joomla\CMS\Language\Text as JText;
use RegularLabs\Library\Document as RL_Document;
use RegularLabs\Library\Field;

if ( ! is_file(JPATH_LIBRARIES . '/regularlabs/autoload.php'))
{
    return;
}

require_once JPATH_LIBRARIES . '/regularlabs/autoload.php';

class JFormFieldRL_Ajax extends Field
{
    public $type = 'Ajax';

    protected function getInput()
    {
        RL_Document::loadMainDependencies();

        $class = $this->get('class', 'btn');

        if ($this->get('disabled'))
        {
            return $this->getButton($class . ' disabled', 'disabled');
        }

        $loading = 'jQuery("#' . $this->id . ' span:nth-child(1)").attr("class", "icon-refresh icon-spin");';

        $success = '
            jQuery("#' . $this->id . '").removeClass("btn-warning").addClass("btn-success");
            jQuery("#' . $this->id . ' span:nth-child(1)").attr("class", "icon-ok");
            if(data){
                jQuery("#message_' . $this->id . '").addClass("alert alert-success alert-noclose alert-inline").html(data);
            }
            ';

        $error = '
            jQuery("#' . $this->id . '").removeClass("btn-success").addClass("btn-warning");
            jQuery("#' . $this->id . ' span:nth-child(1)").attr("class", "icon-warning");
            if(data){
                let error = data;
                if(data.statusText) { 
                    error = data.statusText;
                    if(data.responseText.test(/<blockquote>/)) {
                        error = data.responseText.replace(/^[.\\\\s\\\\S]*?<blockquote>([.\\\\s\\\\S]*?)<\\\\/blockquote>[.\\\\s\\\\S]*$/gm, "$1");
                    }
                }
                jQuery("#message_' . $this->id . '").addClass("alert alert-danger alert-noclose alert-inline").html(error);
            }';

        if ($this->get('success-disabled'))
        {
            $success .= '
            jQuery("#' . $this->id . '").disabled = true;
            jQuery("#' . $this->id . '").addClass("disabled");
            jQuery("#' . $this->id . '").attr("onclick", "return false;");
            ';
        }

        if ($this->get('success-text') || $this->get('error-text'))
        {
            $success_text = $this->get('success-text', $this->get('text'));
            $error_text   = $this->get('error-text', $this->get('text'));

            $success .= '
            jQuery("#' . $this->id . ' span:nth-child(2)").text("' . addslashes(JText::_($success_text)) . '");
            ';

            $error .= '
            jQuery("#' . $this->id . ' span:nth-child(2)").text("' . addslashes(JText::_($error_text)) . '");
            ';
        }

        $query     = '';
        $url_query = $this->get('url-query');

        if ($url_query)
        {
            $name_prefix = $this->form->getFormControl() . '\\\[' . $this->group . '\\\]';
            $id_prefix   = $this->form->getFormControl() . '_' . $this->group . '_';
            $query_parts = [];
            $url_query   = explode(',', $url_query);

            foreach ($url_query as $url_query_part)
            {
                [$key, $id] = explode(':', $url_query_part);

                $el_name = 'document.querySelector("input[name=' . $name_prefix . '\\\[' . $id . '\\\]]:checked")';
                $el_id   = 'document.querySelector("#' . $id_prefix . $id . '")';

                $query_parts[] = '`&' . $key . '=`'
                    . ' + encodeURI(' . $el_name . ' ? ' . $el_name . '.value : (' . $el_id . ' ? ' . $el_id . '.value' . ' : ""))';
            }

            $query = '+' . implode('+', $query_parts);
        }

        $script = 'function loadAjax' . $this->id . '() {
                ' . $loading . '
                jQuery("#message_' . $this->id . '").attr("class", "").html("");
                RegularLabsScripts.loadajax(
                    `' . addslashes($this->get('url')) . '`' . $query . ',
                    `
                    if(data == "" || data.substring(0,1) == "+") {
                        data = data.trim().replace(/^[+]/, "");
                        ' . $success . '
                    } else {
                        data = data.trim().replace(/^[-]/, "");
                        ' . $error . '
                    }`,
                    `' . $error . '`
                );
            }';

        $script = preg_replace('#\s*\n\s*#', ' ', $script);

        JFactory::getDocument()->addScriptDeclaration($script);

        $attributes = 'onclick="loadAjax' . $this->id . '();return false;"';

        return $this->getButton($class, $attributes);
    }

    private function getButton($class = 'btn', $attributes = '')
    {
        $icon = $this->get('icon', '')
            ? 'icon-' . $this->get('icon', '')
            : '';

        return
            '<button id="' . $this->id . '" class="' . $class . '"'
            . ' title="' . JText::_($this->get('description')) . '"'
            . ' ' . $attributes . '>'
            . '<span class="' . $icon . '"></span> '
            . '<span>' . JText::_($this->get('text', $this->get('label'))) . '</span>'
            . '</button>'
            . '<div id="message_' . $this->id . '"></div>';
    }
}