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<?php
namespace Mediawiki\DataModel;
use InvalidArgumentException;
use RuntimeException;
/**
* Represents a collection or revisions
* @author Addshore
*/
class Revisions {
/**
* @var Revision[]
*/
private $revisions;
/**
* @param Revisions[] $revisions
*/
public function __construct( $revisions = array() ) {
$this->revisions = array();
$this->addRevisions( $revisions );
}
/**
* @param Revision[]|Revisions $revisions
*
* @throws InvalidArgumentException
*/
public function addRevisions( $revisions ) {
if( !is_array( $revisions ) && !$revisions instanceof Revisions ) {
throw new InvalidArgumentException( '$revisions needs to either be an array or a Revisions object' );
}
if( $revisions instanceof Revisions ) {
$revisions = $revisions->toArray();
}
foreach( $revisions as $revision ) {
$this->addRevision( $revision );
}
}
/**
* @param Revision $revision
*/
public function addRevision( Revision $revision ) {
$this->revisions[$revision->getId()] = $revision;
}
/**
* @param int $id
*
* @return bool
*/
public function hasRevisionWithId( $id ){
return array_key_exists( $id, $this->revisions );
}
/**
* @param Revision $revision
*
* @return bool
*/
public function hasRevision( Revision $revision ){
return array_key_exists( $revision->getId(), $this->revisions );
}
/**
* @return Revision|null Revision or null if there is no revision
*/
public function getLatest() {
if( empty( $this->revisions ) ) {
return null;
}
return $this->revisions[ max( array_keys( $this->revisions ) ) ];
}
/**
* @param int $revid
*
* @throws RuntimeException
* @throws InvalidArgumentException
* @return Revision
*/
public function get( $revid ){
if( !is_int( $revid ) ) {
throw new InvalidArgumentException( '$revid needs to be an int' );
}
if( $this->hasRevisionWithId( $revid ) ){
return $this->revisions[$revid];
}
throw new RuntimeException( 'No such revision loaded in Revisions object' );
}
/**
* @return Revision[]
*/
public function toArray() {
return $this->revisions;
}
}
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