<?php

defined('ROOT_DIR') || exit;

class DOM {
    private string $tag_name;
    private bool $end_tag;
    private array $attributes = array();
    public array $child_nodes = array();

    public function __construct($tag_name, $end_tag = true)
    {
        $this->tag_name = $tag_name ?? "div";
        $this->end_tag = $end_tag;
    }

    // Добавить атрибут
    public function setAttribute($name, $value): bool
    {
        $this->attributes[$name] = $value;
        return true;
    }

    // Вывести на экран DOM
    public function view(): bool
    {
        echo $this->render();
        return true;
    }

    // Отрендерить DOM
    public function render(): string
    {
        $string_dom = "<" . $this->tag_name . $this->render_attributes() . ">";
        if($this->end_tag) $string_dom .= $this->render_child();
        if($this->end_tag) $string_dom .= "</". $this->tag_name . ">";
        return $string_dom;
    }

    // Отрендерить Атрибуты DOM
    private function render_attributes(): string
    {
        $string_attributes = "";
        foreach ($this->attributes as $key => $value)
            $string_attributes .= " $key='$value'";
        return $string_attributes;
    }

    // Отрендерить дочерние DOM
    private function render_child(): string
    {
        $string_child = "";
        foreach ($this->child_nodes as $key => $value) {
            if(gettype($value) == "string") {
                $string_child .= $value;
                continue;
            }
            $string_child .= $value->render();
        }
        return $string_child;
    }

    // Добавить дочерний DOM в конец
    public function append($content): bool
    {
        if(gettype($content) != "string" && gettype($content) != "object") return false;
        $this->child_nodes[] = $content;
        return true;
    }

    // Добавить дочерний DOM в начало
    public function prepend($content): bool
    {
        if(gettype($content) != "string" && gettype($content) != "object") return false;
        array_unshift($this->child_nodes, $content);
        return true;
    }

    // Очистить все дочерние DOM
    public function clear(): bool
    {
        $this->child_nodes = array();
        return true;
    }
}