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<?php
namespace PicoFeed\Syndication;
use DateTime;
use DOMDocument;
use DOMElement;
/**
* Class AtomHelper
*
* @package PicoFeed\Syndication
* @author Frederic Guillot
*/
class AtomHelper
{
/**
* @var DOMDocument
*/
protected $document;
/**
* Constructor
*
* @param DOMDocument $document
*/
public function __construct(DOMDocument $document)
{
$this->document = $document;
}
/**
* Build node
*
* @access public
* @param DOMElement $element
* @param string $tag
* @param string $value
* @return AtomHelper
*/
public function buildNode(DOMElement $element, $tag, $value)
{
$node = $this->document->createElement($tag);
$node->appendChild($this->document->createTextNode($value));
$element->appendChild($node);
return $this;
}
/**
* Build title
*
* @access public
* @param DOMElement $element
* @param string $title
* @return AtomHelper
*/
public function buildTitle(DOMElement $element, $title)
{
return $this->buildNode($element, 'title', $title);
}
/**
* Build id
*
* @access public
* @param DOMElement $element
* @param string $id
* @return AtomHelper
*/
public function buildId(DOMElement $element, $id)
{
return $this->buildNode($element, 'id', $id);
}
/**
* Build date element
*
* @access public
* @param DOMElement $element
* @param DateTime $date
* @param string $type
* @return AtomHelper
*/
public function buildDate(DOMElement $element, DateTime $date, $type = 'updated')
{
return $this->buildNode($element, $type, $date->format(DateTime::ATOM));
}
/**
* Build link element
*
* @access public
* @param DOMElement $element
* @param string $url
* @param string $rel
* @param string $type
* @return AtomHelper
*/
public function buildLink(DOMElement $element, $url, $rel = 'alternate', $type = 'text/html')
{
$node = $this->document->createElement('link');
$node->setAttribute('rel', $rel);
$node->setAttribute('type', $type);
$node->setAttribute('href', $url);
$element->appendChild($node);
return $this;
}
/**
* Build author element
*
* @access public
* @param DOMElement $element
* @param string $authorName
* @param string $authorEmail
* @param string $authorUrl
* @return AtomHelper
*/
public function buildAuthor(DOMElement $element, $authorName, $authorEmail, $authorUrl)
{
if (!empty($authorName)) {
$author = $this->document->createElement('author');
$this->buildNode($author, 'name', $authorName);
if (!empty($authorEmail)) {
$this->buildNode($author, 'email', $authorEmail);
}
if (!empty($authorUrl)) {
$this->buildNode($author, 'uri', $authorUrl);
}
$element->appendChild($author);
}
return $this;
}
}
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