<?php

defined('ROOT_DIR') || exit;

trait Admin {
    public array $admin_pages = array();
    public array $admin_pages_list = array();

    public function admin_page_set($parent_slug, $page_slug, $page_title, $params, $function, $hide = false, $icon = false)
    {
        if(!isset($params)) $params = array();
        $params["page"] = $page_slug;
        if($parent_slug && isset($this->admin_pages_list[$parent_slug])) {
            $parent = $this->admin_pages_list[$parent_slug];
            $link = &$parent["link"];
            $parent_level = $link["level"];

            $page_info = array(
                "level" => $parent_level + 1,
                "title" => $page_title,
                "function" => $function,
                "pages" => array(),
                "params" => $params,
                "hide" => $hide,
                "icon" => $icon,
                "slug" => $page_slug
            );

            $link["pages"][$page_slug] = $page_info;
            $page_info["link"] = &$link["pages"][$page_slug];
        } else {
            $page_info = array(
                "level" => 0,
                "title" => $page_title,
                "function" => $function,
                "pages" => array(),
                "params" => $params,
                "hide" => $hide,
                "icon" => $icon,
                "slug" => $page_slug
            );
            $this->admin_pages[$page_slug] = $page_info;
            $page_info["link"] = &$this->admin_pages[$page_slug];
        }
        $this->admin_pages_list[$page_slug] = $page_info;
    }

    // Проверить есть ли у страницы дочерний элемент по с нужной подстрокой
    public function admin_page_has_search($parent_slug, $search): bool
    {
        if(!$search) return true;
        $parent_page = $this->admin_pages_list[$parent_slug];
        $parent_page_link = &$parent_page["link"];
        if(mb_strpos(mb_strtolower($parent_page["title"]), mb_strtolower($search)) !== false) return true;
        return $this->admin_page_has_search_recurse($parent_page_link["pages"], $search);
    }

    // Рекурсивная функция проверки дочерних элементов для поиска подстроки
    private function admin_page_has_search_recurse($pages, $search): bool
    {
        foreach ($pages as $key => $page) {
            if(mb_strpos(mb_strtolower($page["title"]), mb_strtolower($search)) !== false) return true;
            $result = $this->admin_page_has_child_recurse($page["pages"], $search);
            if($result === true) return true;
        }
        return false;
    }

    // Проверить есть ли у страницы дочерний элемент
    public function admin_page_has_child($parent_slug, $page_slug): bool
    {
        $parent_page = &$this->admin_pages_list[$parent_slug]["link"];
        if($parent_slug == $page_slug) return true;
        return $this->admin_page_has_child_recurse($parent_page["pages"], $page_slug);
    }

    // Рекурсивная функция проверки дочерних элементов
    private function admin_page_has_child_recurse($pages, $page_slug): bool
    {
        foreach ($pages as $key => $page) {
            if($key === $page_slug) return true;
            $result = $this->admin_page_has_child_recurse($page["pages"], $page_slug);
            if($result === true) return true;
        }
        return false;
    }

    // Отрисовка страницы в админ панели
    public function admin_page_render($slug, $dive = false): bool
    {
        $page = $this->admin_pages_list[$slug];
        if(!isset($page)) return false;

        $link = &$page["link"];

        if($page["level"] == 0 && $dive === true)
            return $this->admin_page_render(array_shift($link["pages"])["slug"]);

        if(is_callable($page["function"])) {
            $page["function"]();
            return true;
        }

        $func_name = $page["function"];
        $func_body = $GLOBALS[$func_name];
        $func_body();

        return true;
    }
}