<?php
/**
 * @package         Components Anywhere
 * @version         4.10.1
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            http://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

namespace RegularLabs\Plugin\System\ComponentsAnywhere;

defined('_JEXEC') or die;

use RegularLabs\Library\ParametersNew as RL_Parameters;
use RegularLabs\Library\PluginTag as RL_PluginTag;
use RegularLabs\Library\RegEx as RL_RegEx;

class Params
{
    protected static $params  = null;
    protected static $regexes = null;

    public static function get()
    {
        if ( ! is_null(self::$params))
        {
            return self::$params;
        }

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

        $params->tag = RL_PluginTag::clean($params->component_tag);


        self::$params = $params;

        return self::$params;
    }

    public static function getRegex($type = 'tag')
    {
        $regexes = self::getRegexes();

        return $regexes->{$type} ?? $regexes->tag;
    }

    public static function getTagCharacters()
    {
        $params = self::get();

        if ( ! isset($params->tag_character_start))
        {
            self::setTagCharacters();
        }

        return [$params->tag_character_start, $params->tag_character_end];
    }

    public static function getTags($only_start_tags = false)
    {
        $params = self::get();

        [$tag_start, $tag_end] = self::getTagCharacters();

        $tags = [
            [
                $tag_start . $params->tag,
            ],
            [
                $tag_end,
            ],
        ];

        return $only_start_tags ? $tags[0] : $tags;
    }

    public static function setTagCharacters()
    {
        $params = self::get();

        [self::$params->tag_character_start, self::$params->tag_character_end] = explode('.', $params->tag_characters);
    }

    private static function getRegexes()
    {
        if ( ! is_null(self::$regexes))
        {
            return self::$regexes;
        }

        $params = self::get();

        // Tag character start and end
        [$tag_start, $tag_end] = Params::getTagCharacters();

        $pre        = RL_PluginTag::getRegexSurroundingTagsPre();
        $post       = RL_PluginTag::getRegexSurroundingTagsPost();
        $inside_tag = RL_PluginTag::getRegexInsideTag($tag_start, $tag_end);

        $tag_start = RL_RegEx::quote($tag_start);
        $tag_end   = RL_RegEx::quote($tag_end);

        $spaces = RL_PluginTag::getRegexSpaces();

        self::$regexes = (object) [];

        self::$regexes->tag =
            '(?<start_div>(?:'
            . $pre
            . $tag_start . 'div(?: ' . $inside_tag . ')?' . $tag_end
            . $post
            . '\s*)?)'

            . '(?<pre>' . $pre . ')'
            . $tag_start . RL_RegEx::quote($params->tag) . $spaces . '(?<id>' . $inside_tag . ')' . $tag_end
            . '(?<post>' . $post . ')'

            . '(?<end_div>(?:\s*'
            . $pre
            . $tag_start . '/div' . $tag_end
            . $post
            . ')?)';

        return self::$regexes;
    }
}