<?php

namespace rednaoeasycalculationforms\Utilities;

use DOMDocument;
use DOMElement;

class HtmlTagWrapper
{
    /** @var DOMElement */
    protected $Node;

    /** @var HtmlTagWrapper[] */
    public $Children;
    /** @var DOMDocument  */
    public $Document;

    /**
     * HtmlTagWrapper constructor.
     * @param $domElement DOMElement
     */
    public function __construct($tagNameOrNode, $document = null)
    {
        if($document == null)
            $document = new \DOMDocument('1');
        $this->Document = $document;
        $this->Children = array();

        if($tagNameOrNode instanceof \DOMNode)
            $this->Node = $tagNameOrNode;
        else
            $this->Node = $this->Document->createElement($tagNameOrNode);
    }

    /**
     * @param $child HtmlTagWrapper
     */
    public function AppendChild($child)
    {
        if($child == null)
            return;

        $this->Node->appendChild($child->Node);
        $this->Children[] = $child;

    }

    public function SetText($text)
    {
        $this->Clear();
        $text = $this->Document->createTextNode($text);
        $this->Node->appendChild($text);
    }

    public function Clear() {
        foreach($this->Node->childNodes as $node)
        {
            $this->Node->removeChild($node);
        }
    }

    public function GetDomElement() {
        return $this->Node;
    }

    public function AddClass($className)
    {
        $class = $this->Node->getAttribute('class');
        if(\trim($class) != '')
            $class .= ' ';

        $class .= $className;
        if($class != '')
            $this->Node->setAttribute('class', $class);
    }

    public function AddStyle($styleName, $value)
    {
        $this->AddStyles(array($styleName => $value));
    }

    public function AddStyles($styles)
    {
        $style = $this->Node->getAttribute('style');

        foreach($styles as $styleName => $value)
        {
            $style .= $styleName . ':' . $value . ' !important;';
        }

        $this->Node->setAttribute('style', $style);
    }

    public function Remove()
    {
        $this->Node->parentNode->removeChild($this->Node);
    }

    public function SetAttribute($attributeName, $value)
    {
        $this->Node->setAttribute($attributeName, $value);
    }

    public function CloneNode()
    {
        /** @var DOMElement $clonedDomElement */
        $clonedDomElement = $this->Node->cloneNode();
        return new HtmlTagWrapper($clonedDomElement, $this->Document);
    }

    /**
     * @param $elementName
     * @return HtmlTagWrapper
     */
    public function CreateElement($elementName)
    {
        return  new HtmlTagWrapper($elementName, $this->Document);
    }

    public function SetHtml($html)
    {
        if($html == '')
            return;
        $fragment = $this->Document->createDocumentFragment();
        $fragment->appendXML($html);
        $this->Node->appendChild($fragment);
    }

    public function CreateAndAppendChild($elementName)
    {
        $element = $this->CreateElement($elementName);
        $this->AppendChild($element);
        return $element;
    }

    public function GetHTML() {
        return $this->Document->saveHTML($this->Node);
    }

    public function AppendText($text)
    {
        $this->Node->append($text);
    }
}