<?php
/**
 * @package         Regular Labs Library
 * @version         23.12.10783
 * 
 * @author          Peter van Westen <[email protected]>
 * @link            https://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         GNU General Public License version 2 or later
 */

namespace RegularLabs\Library\Form;

defined('_JEXEC') or die;

use Joomla\CMS\Language\Text as JText;
use Joomla\CMS\Layout\FileLayout as JFileLayout;
use Joomla\CMS\Plugin\PluginHelper as JPluginHelper;
use RegularLabs\Library\Document as RL_Document;
use RegularLabs\Library\Input as RL_Input;
use RegularLabs\Library\Parameters as RL_Parameters;
use RegularLabs\Library\RegEx as RL_RegEx;

class Form
{
    public static function getLayout(array $options, bool $treeselect = false): string
    {
        if ($treeselect)
        {
            return 'regularlabs.form.field.treeselect';
        }

        if (is_array(reset($options)))
        {
            return 'joomla.form.field.groupedlist-fancy-select';
        }

        return 'joomla.form.field.list-fancy-select';
    }

    /**
     * Return a name with added extras and formatting
     */
    static public function getNameWithExtras(object $item, array $extras = []): string
    {
        $name = trim($item->name);

        foreach ($extras as $extra)
        {
            if ($extra == 'language' && $item->{$extra} == '*')
            {
                continue;
            }

            if (
                in_array($extra, ['id', 'alias'], true)
                && $item->{$extra} == $item->name
            )
            {
                continue;
            }

            if ($extra == 'unpublished')
            {
                $name .= isset($item->published) && ! $item->published
                    ? ' (' . JText::_('JUNPUBLISHED') . ')'
                    : '';
                continue;
            }

            if ($extra == 'disabled')
            {
                $name .= isset($item->disabled) && $item->disabled
                    ? ' (' . JText::_('JDISABLED') . ')'
                    : '';
                continue;
            }

            if (empty($item->{$extra}))
            {
                continue;
            }

            if (isset($item->{'add_' . $extra}) && ! $item->{'add_' . $extra})
            {
                continue;
            }

            $name .= ' [' . $item->{$extra} . ']';
        }

        return self::prepareSelectItem($name);
    }

    /**
     * Return an array with names with added extras and formatting
     */
    static public function getNamesWithExtras(array $items, array $extras = []): array
    {
        $names = [];

        foreach ($items as $item)
        {
            $names[] = self::getNameWithExtras($item, $extras);
        }

        return $names;
    }

    public static function prepareSelectItem(string $string, int $remove_first = 0): string
    {
        if (empty($string))
        {
            return '';
        }

        $string = str_replace(['&nbsp;', '&#160;'], ' ', $string);
        $string = RL_RegEx::replace('^(- )+', '  ', $string);

        for ($i = 0; $remove_first > $i; $i++)
        {
            $string = RL_RegEx::replace('^  ', '', $string, '');
        }

        if (RL_RegEx::match('^( *)(.*)$', $string, $match, ''))
        {
            [$string, $pre, $name] = $match;

            $pre = str_replace('  ', ' ·  ', $pre);
            $pre = RL_RegEx::replace('(( ·  )*) ·  ', '\1 »  ', $pre);
            $pre = str_replace('  ', ' &nbsp; ', $pre);

            $string = $pre . $name;
        }

        return $string;
    }

    /**
     * Render a full select list
     */
    public static function selectList(
        array  $options,
        string $name,
        mixed  $value,
        string $id,
        array  $attributes = [],
        bool   $treeselect = false,
        bool   $collapse_children = false
    ): string
    {
        if (empty($options))
        {
            return '<fieldset class="radio">' . JText::_('RL_NO_ITEMS_FOUND') . '</fieldset>';
        }

        $params = RL_Parameters::getPlugin('regularlabs');

        if ( ! is_array($value))
        {
            $value = explode(',', $value);
        }

        if (count($value) === 1 && str_contains($value[0], ','))
        {
            $value = explode(',', $value[0]);
        }

        $count = 0;

        if ($options != -1)
        {
            foreach ($options as $option)
            {
                $count++;

                if (isset($option->links))
                {
                    $count += count($option->links);
                }

                if ($count > $params->max_list_count)
                {
                    break;
                }
            }
        }

        if ($options == -1 || $count > $params->max_list_count)
        {
            if (is_array($value))
            {
                $value = implode(',', $value);
            }

            if ( ! $value)
            {
                $input = '<textarea name="' . $name . '" id="' . $id . '" cols="40" rows="5">' . $value . '</textarea>';
            }
            else
            {
                $input = '<input type="text" name="' . $name . '" id="' . $id . '" value="' . $value . '" size="60">';
            }

            $plugin = JPluginHelper::getPlugin('system', 'regularlabs');

            $url = ! empty($plugin->id)
                ? 'index.php?option=com_plugins&task=plugin.edit&extension_id=' . $plugin->id
                : 'index.php?option=com_plugins&&filter[folder]=&filter[search]=Regular%20Labs%20Library';

            $label   = JText::_('RL_ITEM_IDS');
            $text    = JText::_('RL_MAX_LIST_COUNT_INCREASE');
            $tooltip = JText::_('RL_MAX_LIST_COUNT_INCREASE_DESC,' . $params->max_list_count . ',RL_MAX_LIST_COUNT');
            $link    = '<a href="' . $url . '" target="_blank" id="' . $id . '_msg"'
                . ' class="hasPopover" title="' . $text . '" data-content="' . htmlentities($tooltip) . '">'
                . '<span class="icon icon-cog"></span>'
                . $text
                . '</a>';

            $script = 'jQuery("#' . $id . '_msg").popover({"html": true,"trigger": "hover focus","container": "body"})';

            return '<fieldset class="radio">'
                . '<label for="' . $id . '">' . $label . ':</label>'
                . $input
                . '<br><small>' . $link . '</small>'
                . '</fieldset>'
                . '<script>' . $script . '</script>';
        }

        $layout = self::getLayout($options, $treeselect);
        $path   = $treeselect ? JPATH_SITE . '/libraries/regularlabs/layouts' : null;

        $data = [
            ...compact('id', 'name', 'value', 'options'),
            'multiple'          => false,
            'autofocus'         => false,
            'onchange'          => '',
            'dataAttribute'     => '',
            'readonly'          => false,
            'disabled'          => '',
            'hint'              => false,
            'required'          => false,
            'collapse_children' => $collapse_children,
            'groups'            => $options,
            ...$attributes,
        ];

        $renderer = new JFileLayout($layout, $path);

        return $renderer->render($data);
    }

    /**
     * Render a select list loaded via Ajax
     */
    public static function selectListAjax(
        string $field_class,
        string $name,
        mixed  $value,
        string $id,
        array  $attributes = [],
        bool   $treeselect = false,
        bool   $collapse_children = false
    ): string
    {
        RL_Document::style('regularlabs.admin-form');
        RL_Document::script('regularlabs.admin-form');
        RL_Document::script('regularlabs.regular');
        RL_Document::script('regularlabs.script');

        if ($treeselect)
        {
            RL_Document::script('regularlabs.treeselect');
        }

        if (is_array($value))
        {
            $value = implode(',', $value);
        }

        $ajax_data = [
            'parent_request'    => [
                'option' => RL_Input::getCmd('option'),
                'view'   => RL_Input::getCmd('view'),
                'id'     => RL_Input::getInt('id'),
            ],
            'field_class'       => $field_class,
            'value'             => $value,
            'attributes'        => $attributes,
            'treeselect'        => $treeselect,
            'collapse_children' => $collapse_children,
        ];

        return '<div>'
            . '<textarea name="' . $name . '" id="' . $id . '" cols="40" rows="5" class="w-100"'
            . ' data-rl-ajax="' . htmlspecialchars(json_encode($ajax_data)) . '">' . $value . '</textarea>'
            . '<div class="rl-spinner"></div>'
            . '</div>';
    }
}