<?php
/********************************************************************************
 * The contents of this file are subject to the Common Public Attribution License
 * Version 1.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * http://www.wikiarguments.net/license/. The License is based on the Mozilla
 * Public License Version 1.1 but Sections 14 and 15 have been added to cover
 * use of software over a computer network and provide for limited attribution
 * for the Original Developer. In addition, Exhibit A has been modified to be
 * consistent with Exhibit B.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * The Original Code is Wikiarguments. The Original Developer is the Initial
 * Developer and is Wikiarguments GbR. All portions of the code written by
 * Wikiarguments GbR are Copyright (c) 2012. All Rights Reserved.
 * Contributor(s):
 *     Andreas Wierz (andreas.wierz@gmail.com).
 *
 * Attribution Information
 * Attribution Phrase (not exceeding 10 words): Powered by Wikiarguments
 * Attribution URL: http://www.wikiarguments.net
 *
 * This display should be, at a minimum, the Attribution Phrase displayed in the
 * footer of the page and linked to the Attribution URL. The link to the Attribution
 * URL must not contain any form of 'nofollow' attribute.
 *
 * Display of Attribution Information is required in Larger Works which are
 * defined in the CPAL as a work which combines Covered Code or portions
 * thereof with code not governed by the terms of the CPAL.
 *******************************************************************************/

header("Content-Type: text/html; charset=utf-8");
include("./commonHeaders.php");

$sTimer->start('packetHandling');

/**
 * Outputs JSON-encoded response.
 */
function send_response($response)
{
    echo json_encode($response);
}

// Safely retrieve the 'request' from POST if it exists:
$jsonRequest = isset($_POST['request']) ? (string)$_POST['request'] : '{}';
$request     = json_decode($jsonRequest);
$requestObj  = new AjaxRequest($request);
$response    = new Packet();

$handler = false;
$packetTable = array(
    CMSG_REPORT_ERROR      => "CmsgReportError",
    CMSG_FOLLOW_QUESTION   => "CmsgFollowQuestion",
    CMSG_UNFOLLOW_QUESTION => "CmsgUnfollowQuestion",
    CMSG_VOTE              => "CmsgVote"
);

if (isset($packetTable[$requestObj->getString('opcode')])) {
    $handler = $packetTable[$requestObj->getString('opcode')];
}

if ($handler) {
    new $handler($requestObj, $response);
} else {
    die("INVALID_OPCODE");
}

$sTimer->stop('packetHandling');

$sTimer->start('serialization');
$sSession->serialize();
$sTimer->stop('serialization');

// If admin user, output debug data
if ($sUser->group() >= USER_GROUP_ADMIN) {
    $debugData = new stdClass();
    $debugData->timeInit                 = $sTimer->getRuntimeByName('init');
    $debugData->timePackageHandling      = $sTimer->getRuntimeByName('packetHandling');
    $debugData->timeSessionSerialization = $sTimer->getRuntimeByName('serialization');
    $debugData->timeTotal                = $sTimer->getGlobalRuntime();
    $debugData->slowQuerys               = $sDB->getSlowQuerys();
    $debugData->queryCacheHits           = $sStatistics->queryCacheHits();
    $debugData->queryCacheMisses         = $sStatistics->queryCacheMisses();
    $debugData->memcachedQuerys          = $sMD->getNumQuerys();
    $debugData->memcachedMisses          = $sMD->getNumMisses();

    $response->debug_data = $debugData;
}

send_response($response);

// Log performance if runtime is long
if ($sTimer->getGlobalRuntime() >= 1000) {
    $sTimer->logPerformance("ajax.php", $requestObj);
}
?>