<?php
  /**
   * provides search functionalty
   */
  abstract class OC_Migration_Provider{
  
  	protected $id=false;
  	protected $content=false;
  	protected $uid=false;
  	protected $olduid=false;
  	protected $appinfo=false;
  
  	public function __construct( $appid ) {
  		// Set the id
  		$this->id = $appid;
  		OC_Migrate::registerProvider( $this );
  	}
  
  	/**
  	 * @brief exports data for apps
  	 * @return array appdata to be exported
  	 */
  	abstract function export( );
  
  	/**
  	 * @brief imports data for the app
  	 * @return void
  	 */
  	abstract function import( );
  
  	/**
  	* @brief sets the OC_Migration_Content object to $this->content
  	* @param $content a OC_Migration_Content object
  	*/
  	public function setData( $uid, $content, $info=null ) {
  		$this->content = $content;
  		$this->uid = $uid;
  		$id = $this->id;
  		if( !is_null( $info ) ) {
  			$this->olduid = $info->exporteduser;
  			$this->appinfo = $info->apps->$id;
  		}
  	}
  
  	/**
  	* @brief returns the appid of the provider
  	* @return string
  	*/
  	public function getID() {
  		return $this->id;
  	}
  }