<?php

namespace App\Core\IO;

class XmlNode
{
    public $name;
    public $attributes;
    public $children;
    public $value;

    public function __construct($name, $value = null)
    {
        $this->name = $name;
        $this->value = $value;
        $this->attributes = [];
        $this->children = [];
    }

    public function addChild(XmlNode $child)
    {
        $this->children[] = $child;
        return $this;
    }

    public function createChild($name, $value = null)
    {
        $child = new XmlNode($name, $value);
        $this->addChild($child);
        return $child;
    }

    public function addAttribute($name, $value)
    {
        $this->attributes[$name] = $value;
        return $this;
    }

    public function getXml()
    {
        $xml = "<".$this->name;
        foreach ($this->attributes as $name => $value)
        {
            $xml .= " ".$name."=\"".$value."\"";
        }
        if(count($this->children) == 0 && $this->value === null)
        {
            $xml .= "/>";
            return $xml;
        }
        
        $xml .= ">";
        if ($this->value !== null)
        {
            $xml .= $this->value;
        }
        foreach ($this->children as $child)
        {
            $xml .= $child->getXml();
        }
        $xml .= "</".$this->name.">";
        return $xml;
    }
}

class XmlWriter
{
    public $nodes;
    public $indent;

    public function __construct()
    {
        $this->indent = 0;
    }

    /**
     * Ajoute un noeud à la sortie
     * @param XmlNode $node
     * @return $this
     */
    public function addNode(XmlNode $node)
    {
        $this->nodes[] = $node;
    }

    public function createNode($name, $value = null)
    {
        $node = new XmlNode($name, $value);
        $this->addNode($node);
        return $node;
    }

    public function export()
    {
        $xml = "";
        foreach ($this->nodes as $node)
        {
            $xml .= $node->getXml();
        }
        return $xml;
    }
}