<?php

/*
 * Created on Feb 4, 2009
 *
 * API for MediaWiki 1.8+
 *
 * Copyright (C) 2009 Roan Kattouw <Firstname>.<Lastname>@home.nl
 *
 * 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 ('ApiBase.php');
}

/**
 * API module that imports an XML file like Special:Import does
 *
 * @ingroup API
 */
class ApiImport extends ApiBase {

	public function __construct($main, $action) {
		parent :: __construct($main, $action);
	}

	public function execute() {
		global $wgUser;
		if(!$wgUser->isAllowed('import'))
			$this->dieUsageMsg(array('cantimport'));
		$params = $this->extractRequestParams();
		if(!isset($params['token']))
			$this->dieUsageMsg(array('missingparam', 'token'));
		if(!$wgUser->matchEditToken($params['token']))
			$this->dieUsageMsg(array('sessionfailure'));

		$source = null;
		$isUpload = false;
		if(isset($params['interwikisource']))
		{
			if(!isset($params['interwikipage']))
				$this->dieUsageMsg(array('missingparam', 'interwikipage'));
			$source = ImportStreamSource::newFromInterwiki(
					$params['interwikisource'],
					$params['interwikipage'],
					$params['fullhistory'],
					$params['templates']);
		}
		else
		{
			$isUpload = true;
			if(!$wgUser->isAllowed('importupload'))
				$this->dieUsageMsg(array('cantimport-upload'));
			$source = ImportStreamSource::newFromUpload('xml');
		}
		if($source instanceof WikiErrorMsg)
			$this->dieUsageMsg(array_merge(
				array($source->getMessageKey()),
				$source->getMessageArgs()));
		else if(WikiError::isError($source))
			// This shouldn't happen
			$this->dieUsageMsg(array('import-unknownerror', $source->getMessage()));

		$importer = new WikiImporter($source);
		if(isset($params['namespace']))
			$importer->setTargetNamespace($params['namespace']);
		$reporter = new ApiImportReporter($importer, $isUpload,
					$params['interwikisource'],
					$params['summary']);

		$result = $importer->doImport();
		if($result instanceof WikiXmlError)
			$this->dieUsageMsg(array('import-xml-error',
				$result->mLine,
				$result->mColumn,
				$result->mByte . $result->mContext,
				xml_error_string($result->mXmlError)));
		else if(WikiError::isError($result))
			// This shouldn't happen
			$this->dieUsageMsg(array('import-unknownerror', $result->getMessage()));
		$resultData = $reporter->getData();
		$this->getResult()->setIndexedTagName($resultData, 'page');
		$this->getResult()->addValue(null, $this->getModuleName(), $resultData);
	}

	public function mustBePosted() { return true; }

	public function isWriteMode() {
		return true;
	}

	public function getAllowedParams() {
		global $wgImportSources;
		return array (
			'token' => null,
			'summary' => null,
			'xml' => null,
			'interwikisource' => array(
				ApiBase :: PARAM_TYPE => $wgImportSources
			),
			'interwikipage' => null,
			'fullhistory' => false,
			'templates' => false,
			'namespace' => array(
				ApiBase :: PARAM_TYPE => 'namespace'
			)
		);
	}

	public function getParamDescription() {
		return array (
			'token' => 'Import token obtained through prop=info',
			'summary' => 'Import summary',
			'xml' => 'Uploaded XML file',
			'interwikisource' => 'For interwiki imports: wiki to import from',
			'interwikipage' => 'For interwiki imports: page to import',
			'fullhistory' => 'For interwiki imports: import the full history, not just the current version',
			'templates' => 'For interwiki imports: import all included templates as well',
			'namespace' => 'For interwiki imports: import to this namespace',
		);
	}

	public function getDescription() {
		return array (
			'Import a page from another wiki, or an XML file'
		);
	}

	protected function getExamples() {
		return array(
			'Import [[meta:Help:Parserfunctions]] to namespace 100 with full history:',
			'  api.php?action=import&interwikisource=meta&interwikipage=Help:ParserFunctions&namespace=100&fullhistory&token=123ABC',
		);
	}

	public function getVersion() {
		return __CLASS__ . ': $Id: ApiImport.php 48091 2009-03-06 13:49:44Z catrope $';
	}
}

/**
 * Import reporter for the API
 * @ingroup API
 */
class ApiImportReporter extends ImportReporter {
	private $mResultArr = array();

	function reportPage($title, $origTitle, $revisionCount, $successCount)
	{
		// Add a result entry
		$r = array();
		ApiQueryBase::addTitleInfo($r, $title);
		$r['revisions'] = intval($successCount);
		$this->mResultArr[] = $r;

		// Piggyback on the parent to do the logging
		parent::reportPage($title, $origTitle, $revisionCount, $successCount);
	}

	function getData()
	{
		return $this->mResultArr;
	}
}