<?php
/**
 * EFeedItemRSS1 Class file
 * @author Antonio Ramirez 
 * @link http://www.ramirezcobos.com 
 * 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/**
 * EFeedItemRSS1 is an element of an RSS 1.0 Feed
 *
 * @author		Antonio Ramirez <ramirez.cobos@gmail.com>
 * @package   	rss
 * @uses 		CUrlValidator
 * @throws 		CException
 */
class EFeedItemRSS1 extends EFeedItemAbstract{
	/**
	 * (non-PHPdoc)
	 * @see EFeedItemAbstract::setDate()
	 */
	public function setDate( $date ){
		if(!is_numeric($date)) $date = strtotime( $date );

		$date  = date("Y-m-d", $date);
		
		$this->addTag( 'dc:date', $date );
	}
	/**
	 * 
	 * Property getter date
	 * @return date element | null
	 */
	public function getDate(){
		return $this->tags->itemAt('dc:date');
	}
	/**
	 * (non-PHPdoc)
	 * @see EFeedItemAbstract::getNode()
	 */
	public function getNode(){
	
		if( null === $this->link || null === $this->link->content)
			throw new CException( Yii::t('EFeed', 'Link Element is not set and it is required for RSS 1.0 to be used as about attribute of item') );
		
		$node = CHtml::openTag('item', array('rdf:about'=>$this->link->content)).PHP_EOL;
		
		foreach( $this->tags as $tag ){
			$node .= $this->getElement($tag);
		}

		$node .= CHtml::closeTag('item');
		
		return $node.PHP_EOL;
	}
	/**
	 * 
	 * @returns well formatted xml element
	 * @param EFeedTag $tag
	 */
	private function getElement( EFeedTag $tag ){
		
		$element = '';
		
		if(is_array($tag->content)) $tag->attributes['rdf:parseType']="Resource";
		
		if(in_array($tag->name,$this->CDATAEncoded))
		{
			$element .= CHtml::openTag($tag->name,$tag->attributes);
			$element .= '<![CDATA[';
			
		}else 
		{
			$element .= CHtml::openTag($tag->name,$tag->attributes);
		}
		$element .= PHP_EOL;
		
		if(is_array($tag->content))
		{ 
			foreach ($tag->content as $tagName => $content) 
			{
				$tmpTag = new EFeedTag($tagName, $content);
				
				$element .= $this->getElement( $tmpTag );
			}
		}
		else
		{
			$element .= (in_array($tag->name, $this->CDATAEncoded))? $tag->content : CHtml::encode($tag->content);
		}           
			
		$element .= (in_array($tag->name, $this->CDATAEncoded))? PHP_EOL.']]>':"";
		
		$element .= CHtml::closeTag($tag->name).PHP_EOL;
		
		return $element;
	}
}
