<?php
/**
 *
 * @addtogroup SpecialPage
 */

/**
 * implements Special:Newpages
 * @addtogroup SpecialPage
 */
class NewPagesPage extends QueryPage {

	var $namespace;
	var $username;
	var $hideliu;
	var $hidepatrolled;
	var $defaults;
		
	function NewPagesPage( $namespace, $username, $hideliu, $hidepatrolled, $defaults) {
		$this->namespace = $namespace;
		$this->username = $username;
		$this->hideliu = $hideliu;
		$this->hidepatrolled = $hidepatrolled;
		$this->defaults = $defaults;
	}

	function getName() {
		return 'Newpages';
	}

	function isExpensive() {
		# Indexed on RC, and will *not* work with querycache yet.
		return false;
	}

	function makeUserWhere( &$dbo ) {
		global $wgGroupPermissions;
		$where = '';
		if ($this->hidepatrolled) 
			$where = ' AND rc_patrolled = 0';
		if ($wgGroupPermissions['*']['createpage'] == true && $this->hideliu) {
			return  $where . ' AND rc_user = 0';	
		} else {
			$title = Title::makeTitleSafe( NS_USER, $this->username );
			if( $title ) {
				return $where . ' AND rc_user_text = ' . $dbo->addQuotes( $title->getText() );
			} else {
				return $where;
			}
		}
	}

	private function makeNamespaceWhere() {
		return $this->namespace !== 'all'
			? ' AND rc_namespace = ' . intval( $this->namespace )
			: '';
	}

	function getSQL() {
		global $wgUser, $wgUseNPPatrol;
		$usepatrol = ( $wgUseNPPatrol ) ? 1 : 0;
		$dbr = wfGetDB( DB_SLAVE );
		list( $recentchanges, $page ) = $dbr->tableNamesN( 'recentchanges', 'page' );

		$nsfilter = $this->makeNamespaceWhere();
		$uwhere = $this->makeUserWhere( $dbr );

		# FIXME: text will break with compression
		return
			"SELECT 'Newpages' as type,
				rc_namespace AS namespace,
				rc_title AS title,
				rc_cur_id AS cur_id,
				rc_user AS \"user\",
				rc_user_text AS user_text,
				rc_comment as \"comment\",
				rc_timestamp AS timestamp,
				rc_timestamp AS value,
				'{$usepatrol}' as usepatrol,
				rc_patrolled AS patrolled,
				rc_id AS rcid,
				page_len as length,
				page_latest as rev_id
			FROM $recentchanges,$page
			WHERE rc_cur_id=page_id AND rc_new=1
			{$nsfilter}
			AND page_is_redirect = 0
			{$uwhere}";
	}
	
	function preprocessResults( &$dbo, &$res ) {
		# Do a batch existence check on the user and talk pages
		$linkBatch = new LinkBatch();
		while( $row = $dbo->fetchObject( $res ) ) {
			$linkBatch->addObj( Title::makeTitleSafe( NS_USER, $row->user_text ) );
			$linkBatch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_text ) );
		}
		$linkBatch->execute();
		# Seek to start
		if( $dbo->numRows( $res ) > 0 )
			$dbo->dataSeek( $res, 0 );
	}

	/**
	 * Format a row, providing the timestamp, links to the page/history, size, user links, and a comment
	 *
	 * @param $skin Skin to use
	 * @param $result Result row
	 * @return string
	 */
	function formatResult( $skin, $result ) {
		global $wgLang, $wgContLang;
		$dm = $wgContLang->getDirMark();

		$title = Title::makeTitleSafe( $result->namespace, $result->title );
		$time = $wgLang->timeAndDate( $result->timestamp, true );
		$plink = $skin->makeKnownLinkObj( $title, '', $this->patrollable( $result ) ? 'rcid=' . $result->rcid : '' );
		$hist = $skin->makeKnownLinkObj( $title, wfMsgHtml( 'hist' ), 'action=history' );
		$length = wfMsgExt( 'nbytes', array( 'parsemag', 'escape' ), $wgLang->formatNum( htmlspecialchars( $result->length ) ) );
		$ulink = $skin->userLink( $result->user, $result->user_text ) . ' ' . $skin->userToolLinks( $result->user, $result->user_text );
		$comment = $skin->commentBlock( $result->comment );

		return "{$time} {$dm}{$plink} ({$hist}) {$dm}[{$length}] {$dm}{$ulink} {$comment}";
	}

	/**
	 * Should a specific result row provide "patrollable" links?
	 *
	 * @param $result Result row
	 * @return bool
	 */
	function patrollable( $result ) {
		global $wgUser, $wgUseNPPatrol;
		return $wgUseNPPatrol && $wgUser->isAllowed( 'patrol' ) && !$result->patrolled;
	}

	function feedItemDesc( $row ) {
		if( isset( $row->rev_id ) ) {
			$revision = Revision::newFromId( $row->rev_id );
			if( $revision ) {
				return '<p>' . htmlspecialchars( wfMsg( 'summary' ) ) . ': ' .
					htmlspecialchars( $revision->getComment() ) . "</p>\n<hr />\n<div>" .
					nl2br( htmlspecialchars( $revision->getText() ) ) . "</div>";
			}
		}
		return parent::feedItemDesc( $row );
	}
	
	/**
	 * Show a form for filtering namespace and username
	 *
	 * @return string
	 */	
	function getPageHeader() {
		global $wgScript, $wgContLang, $wgGroupPermissions, $wgUser, $wgUseNPPatrol;
		$align = $wgContLang->isRTL() ? 'left' : 'right';
		$self = SpecialPage::getTitleFor( $this->getName() );

		// show/hide links
		$showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));

		$nondefaults = array();
		wfAppendToArrayIfNotDefault( 'hidepatrolled', $this->hidepatrolled, $this->defaults, $nondefaults);
		wfAppendToArrayIfNotDefault( 'hideliu', $this->hideliu, $this->defaults, $nondefaults);
		wfAppendToArrayIfNotDefault( 'namespace', $this->namespace, $this->defaults, $nondefaults);
		wfAppendToArrayIfNotDefault( 'limit', $this->limit , $this->defaults, $nondefaults);
		wfAppendToArrayIfNotDefault( 'offset', $this->offset , $this->defaults, $nondefaults);
		wfAppendToArrayIfNotDefault( 'username', $this->username , $this->defaults, $nondefaults);
		
		$liuLink =  $wgUser->getSkin()->makeKnownLink( $wgContLang->specialPage( 'Newpages' ),
			htmlspecialchars( $showhide[1-$this->hideliu] ), wfArrayToCGI( array( 'hideliu' => 1-$this->hideliu ),  $nondefaults ) );
		$patrLink =  $wgUser->getSkin()->makeKnownLink( $wgContLang->specialPage( 'Newpages' ),
			htmlspecialchars( $showhide[1-$this->hidepatrolled] ), wfArrayToCGI( array( 'hidepatrolled' => 1-$this->hidepatrolled ),  $nondefaults ) );
		$links = array();
		if( $wgGroupPermissions['*']['createpage'] == true )
			$links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
                if( $wgUseNPPatrol )
                	$links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
                $hl = implode( ' | ', $links );                

		$form = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) ) .
			Xml::hidden( 'title', $self->getPrefixedDBkey() ) .
			Xml::openElement( 'table' ) .
			"<tr>
				<td align=\"$align\">" .
					Xml::label( wfMsg( 'namespace' ), 'namespace' ) .
				"</td>
				<td>" .
					Xml::namespaceSelector( intval( $this->namespace ), 'all' ) .
				"</td>
			</tr>
<tr>
				<td align=\"$align\">" .
					Xml::label( wfMsg( 'newpages-username' ), 'mw-np-username' ) .
				"</td>
				<td>" .
					Xml::input( 'username', 30, $this->username, array( 'id' => 'mw-np-username' ) ) .
				"</td>
			</tr><tr><td></td><td>" . $hl . "</td></tr>
			<tr> <td></td>
				<td>" .
					Xml::submitButton( wfMsg( 'allpagessubmit' ) ) .
				"</td>
			</tr>" .
			Xml::closeElement( 'table' ) .
			Xml::hidden( 'offset', $this->offset ) .
			Xml::hidden( 'limit', $this->limit ) .
			Xml::closeElement( 'form' );
		return $form;
	}
	
	/**
	 * Link parameters
	 *
	 * @return array
	 */
	function linkParameters() {
		return( array( 'namespace' => $this->namespace, 'username' => $this->username, 'hideliu' => $this->hideliu, 'hidepatrolled' => $this->hidepatrolled ) );
	}
	
}

/**
 * constructor
 */
function wfSpecialNewpages($par, $specialPage) {
	global $wgRequest, $wgContLang;


	list( $limit, $offset ) = wfCheckLimits();

	$defaults = array(
        /* bool */ 'hideliu' => false,  
        /* bool */ 'hidepatrolled' => false,
        /* text */ 'namespace' => NS_MAIN,
        /* text */ 'username' => '',
        /* int  */ 'offset' => $offset,
        /* int  */ 'limit' => $limit,
        );
                                                                                                        	
	extract($defaults);        

	if ( $par ) {
		$bits = preg_split( '/\s*,\s*/', trim( $par ) );
		foreach ( $bits as $bit ) {
			if ( 'shownav' == $bit )
				$shownavigation = true;
			if ( 'hideliu' == $bit )
				$hideliu = true;
			if ( 'hidepatrolled' == $bit )
				$hidepatrolled = true;
			if ( is_numeric( $bit ) )
				$limit = $bit;

			$m = array();
			if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) )
				$limit = intval($m[1]);
			if ( preg_match( '/^offset=(\d+)$/', $bit, $m ) )
				$offset = intval($m[1]);
			if ( preg_match( '/^namespace=(.*)$/', $bit, $m ) ) {
				$ns = $wgContLang->getNsIndex( $m[1] );
				if( $ns !== false ) {
					$namespace = $ns;
				}
			}
		}
	} else {
		if( $ns = $wgRequest->getText( 'namespace', NS_MAIN ) )
			$namespace = $ns;
		if( $un = $wgRequest->getText( 'username' ) )
			$username = $un;
		if( $hliu = $wgRequest->getBool( 'hideliu' ) )
			$hideliu = $hliu;
		if( $hpatrolled = $wgRequest->getBool( 'hidepatrolled' ) )
			$hidepatrolled = $hpatrolled;
			
	}
	
	if ( ! isset( $shownavigation ) )
		$shownavigation = ! $specialPage->including();

	$npp = new NewPagesPage( $namespace, $username, $hideliu, $hidepatrolled, $defaults );

	if ( ! $npp->doFeed( $wgRequest->getVal( 'feed' ), $limit ) )
		$npp->doQuery( $offset, $limit, $shownavigation );
}