<?php

/*
 * Created on July 30, 2007
 *
 * API for MediaWiki 1.8+
 *
 * Copyright (C) 2007 Yuri Astrakhan <Firstname><Lastname>@gmail.com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * http://www.gnu.org/copyleft/gpl.html
 */

if ( !defined( 'MEDIAWIKI' ) ) {
	// Eclipse helper - will be ignored in production
	require_once ( 'ApiQueryBase.php' );
}

/**
 * Query module to get information about the currently logged-in user
 *
 * @ingroup API
 */
class ApiQueryUserInfo extends ApiQueryBase {

	public function __construct( $query, $moduleName ) {
		parent :: __construct( $query, $moduleName, 'ui' );
	}

	public function execute() {
		$params = $this->extractRequestParams();
		$result = $this->getResult();
		$r = array();

		if ( !is_null( $params['prop'] ) ) {
			$this->prop = array_flip( $params['prop'] );
		} else {
			$this->prop = array();
		}
		$r = $this->getCurrentUserInfo();
		$result->addValue( "query", $this->getModuleName(), $r );
	}

	protected function getCurrentUserInfo() {
		global $wgUser;
		$result = $this->getResult();
		$vals = array();
		$vals['id'] = intval( $wgUser->getId() );
		$vals['name'] = $wgUser->getName();

		if ( $wgUser->isAnon() )
			$vals['anon'] = '';

		if ( isset( $this->prop['blockinfo'] ) ) {
			if ( $wgUser->isBlocked() ) {
				$vals['blockedby'] = User::whoIs( $wgUser->blockedBy() );
				$vals['blockreason'] = $wgUser->blockedFor();
			}
		}

		if ( isset( $this->prop['hasmsg'] ) && $wgUser->getNewtalk() ) {
			$vals['messages'] = '';
		}

		if ( isset( $this->prop['groups'] ) ) {
			$vals['groups'] = $wgUser->getGroups();
			$result->setIndexedTagName( $vals['groups'], 'g' );	// even if empty
		}

		if ( isset( $this->prop['rights'] ) ) {
			// User::getRights() may return duplicate values, strip them
			$vals['rights'] = array_values( array_unique( $wgUser->getRights() ) );
			$result->setIndexedTagName( $vals['rights'], 'r' );	// even if empty
		}

		if ( isset( $this->prop['changeablegroups'] ) ) {
			$vals['changeablegroups'] = $wgUser->changeableGroups();
			$result->setIndexedTagName( $vals['changeablegroups']['add'], 'g' );
			$result->setIndexedTagName( $vals['changeablegroups']['remove'], 'g' );
			$result->setIndexedTagName( $vals['changeablegroups']['add-self'], 'g' );
			$result->setIndexedTagName( $vals['changeablegroups']['remove-self'], 'g' );
		}

		if ( isset( $this->prop['options'] ) ) {
			$vals['options'] = $wgUser->getOptions();
		}

		if ( isset( $this->prop['preferencestoken'] ) && is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
			$vals['preferencestoken'] = $wgUser->editToken();
		}

		if ( isset( $this->prop['editcount'] ) ) {
			$vals['editcount'] = intval( $wgUser->getEditCount() );
		}

		if ( isset( $this->prop['ratelimits'] ) ) {
			$vals['ratelimits'] = $this->getRateLimits();
		}

		if ( isset( $this->prop['email'] ) ) {
			$vals['email'] = $wgUser->getEmail();
			$auth = $wgUser->getEmailAuthenticationTimestamp();
			if ( !is_null( $auth ) )
				$vals['emailauthenticated'] = wfTimestamp( TS_ISO_8601, $auth );
		}
		return $vals;
	}

	protected function getRateLimits()
	{
		global $wgUser, $wgRateLimits;
		if ( !$wgUser->isPingLimitable() )
			return array(); // No limits

		// Find out which categories we belong to
		$categories = array();
		if ( $wgUser->isAnon() )
			$categories[] = 'anon';
		else
			$categories[] = 'user';
		if ( $wgUser->isNewBie() )
		{
			$categories[] = 'ip';
			$categories[] = 'subnet';
			if ( !$wgUser->isAnon() )
				$categories[] = 'newbie';
		}
		$categories = array_merge( $categories, $wgUser->getGroups() );

		// Now get the actual limits
		$retval = array();
		foreach ( $wgRateLimits as $action => $limits )
			foreach ( $categories as $cat )
				if ( isset( $limits[$cat] ) && !is_null( $limits[$cat] ) )
				{
					$retval[$action][$cat]['hits'] = intval( $limits[$cat][0] );
					$retval[$action][$cat]['seconds'] = intval( $limits[$cat][1] );
				}
		return $retval;
	}

	public function getAllowedParams() {
		return array (
			'prop' => array (
				ApiBase :: PARAM_DFLT => null,
				ApiBase :: PARAM_ISMULTI => true,
				ApiBase :: PARAM_TYPE => array (
					'blockinfo',
					'hasmsg',
					'groups',
					'rights',
					'changeablegroups',
					'options',
					'preferencestoken',
					'editcount',
					'ratelimits',
					'email',
				)
			)
		);
	}

	public function getParamDescription() {
		return array (
			'prop' => array(
				'What pieces of information to include',
				'  blockinfo  - tags if the current user is blocked, by whom, and for what reason',
				'  hasmsg     - adds a tag "message" if the current user has pending messages',
				'  groups     - lists all the groups the current user belongs to',
				'  rights     - lists all the rights the current user has',
				'  changeablegroups - lists the groups the current user can add to and remove from',
				'  options    - lists all preferences the current user has set',
				'  editcount  - adds the current user\'s edit count',
				'  ratelimits - lists all rate limits applying to the current user'
			)
		);
	}

	public function getDescription() {
		return 'Get information about the current user';
	}

	protected function getExamples() {
		return array (
			'api.php?action=query&meta=userinfo',
			'api.php?action=query&meta=userinfo&uiprop=blockinfo|groups|rights|hasmsg',
		);
	}

	public function getVersion() {
		return __CLASS__ . ': $Id: ApiQueryUserInfo.php 69578 2010-07-20 02:46:20Z tstarling $';
	}
}