<?php
/**
 * The syncer of svn.
 *
 * @copyright   Copyright 2009-2015 禅道软件（青岛）有限公司(ZenTao Software (Qingdao) Co., Ltd. www.cnezsoft.com)
 * @license     ZPL(http://zpl.pub/page/zplv12.html) or AGPL(https://www.gnu.org/licenses/agpl-3.0.en.html)
 * @author      Chunsheng Wang <chunsheng@cnezsoft.com>
 * @package     svn
 * @version     $Id$
 * @link        http://www.zentao.net
 */
error_reporting(E_ALL ^ E_STRICT ^ E_WARNING);

include './config.php';
include './api.class.php';

$syncer = new syncer($config);
$syncer->run();

class syncer
{
    /**
     * The svn binary svnClient.
     * 
     * @var string   
     * @access public
     */
    public $svnClient;

    /**
     * The zentao client.
     * 
     * @var string   
     * @access public
     */
    public $zentaoClient;

    /**
     * Repos.
     * 
     * @var array 
     * @access public
     */
    public $repos = array(); 

    /**
     * The log root.
     * 
     * @var string
     * @access public
     */
    public $logRoot = '';

    /**
     * The construct function.
     * 
     * @access public
     * @return void
     */
    public function __construct($config)
    {
        $this->setConfig($config);
        $this->setTimeZone();
        $this->setRepos();
        $this->setLogRoot();
        $this->loginZentao();
    }

    /**
     * Set config.
     * 
     * @param  object    $config 
     * @access public
     * @return void
     */
    public function setConfig($config)
    {
        $this->config = $config;
    }

   /**
   * Set timezone.
   * 
   * @access public
   * @return void
   */
    public function setTimeZone()
    {
        date_default_timezone_set($this->config->timezone);
    }

    /**
     * Set the repos.
     * 
     * @access public
     * @return void
     */
    public function setRepos()
    {
        if(!$this->config->svn->repos) die("You must set one svn repo.\n");
        $this->repos = $this->config->svn->repos;
    }

    /**
     * Set the log root.
     * 
     * @access public
     * @return void
     */
    public function setLogRoot()
    {
        $this->logRoot = './log/';
        if(!is_dir($this->logRoot)) mkdir($this->logRoot);
    }

    /**
     * Login to zentao.
     * 
     * @access public
     * @return void
     */
    public function loginZentao()
    {
        if(!$this->config->zentao->path or !$this->config->zentao->user) die("You must set the zentao path and user.\n");
        $zentaoConfig = $this->config->zentao;
        $this->zentaoClient = new ztclient($zentaoConfig->path, $zentaoConfig->user, $zentaoConfig->password);
    }

    /**
     * Run. 
     * 
     * @access public
     * @return void
     */
    public function run()
    {
        while(true)
        {
            foreach($this->repos as $name => $repo)
            {
                $this->printLog("begin repo $name");
                $repo = (object)$repo;
                $repo->name = $name;

                $this->setRepo($repo);

                $savedRevision = $this->getSavedRevision();
                $this->printLog("start from revision $savedRevision");
                $logs = $this->getRepoLogs($repo, $savedRevision);
                $revisions = $this->getRevisionsFromLogs($logs);
                if(!$revisions) 
                {
                    $this->printLog("no logs");
                    continue;
                }
                $this->printLog('fetched ' . count($revisions) . ' logs');

                $this->printLog('begin posting logs');
                $objects = $this->zentaoClient->post('svn', 'apiSync', array('logs' => $logs, 'repoRoot' => $this->repoRoot));
                $objects = $objects->parsedObjects;

                $this->printLog('parsed objects:');
                echo 'story: ' . join(',', (array)$objects->stories) . "\n";
                echo 'task: '  . join(',', (array)$objects->tasks) . "\n";
                echo 'bugs: '  . join(',', (array)$objects->bugs) . "\n";

                $this->saveLastRevision(max($revisions));
                echo "----------------------\n";
            }
            $this->printLog("sleeping {$this->config->sleep} seconds");
            sleep($this->config->sleep);
        }
    }

    /**
     * Set repo.
     * 
     * @param  object    $repo 
     * @access public
     * @return void
     */
    public function setRepo($repo)
    {
        $this->setClient($repo);
        $this->setLogFile($repo->name);
        $this->setRepoRoot($repo);
    }

    /**
     * Set the svn binary svnClient of a repo.
     * 
     * @param  object    $repo 
     * @access public
     * @return void
     */
    public function setClient($repo)
    {
        if($this->config->svn->client == '') die("You must set the svn svnClient file.\n");
        $this->svnClient = $this->config->svn->client . " --non-interactive";
        if(isset($repo->username)) $this->svnClient .= " --username $repo->username --password $repo->password --no-auth-cache";
    }

    /**
     * Set the log file of a repo.
     * 
     * @param  string    $repoName 
     * @access public
     * @return void
     */
    public function setLogFile($repoName)
    {
        $this->logFile = $this->logRoot . $repoName;
    }

    /**
     * set the root path of a repo.
     * 
     * @param  object    $repo 
     * @access public
     * @return void 
     */
    public function setRepoRoot($repo)
    {
        $cmd  = $this->svnClient . " info --xml $repo->path";
        $info = `$cmd`;
        $info = simplexml_load_string($info);
        $repoRoot = (string)$info->entry->repository->root;
        $this->repoRoot = $repoRoot;
    }

    /**
     * Get repo logs.
     * 
     * @param  object  $repo 
     * @param  int     $fromRevision 
     * @access public
     * @return string
     */
    public function getRepoLogs($repo, $fromRevision)
    {
        $parsedLogs = array();

        /* The svn log command. */
        $cmd  = $this->svnClient . " log -r $fromRevision:HEAD -v --xml $repo->path";
        $logs = `$cmd`;

        return $logs;
    }

    /**
     * Get the saved revision.
     * 
     * @access public
     * @return int
     */
    public function getSavedRevision()
    {
        if(!file_exists($this->logFile)) return 0;
        return (int)trim(file_get_contents($this->logFile));
    }

    /**
     * Get revisons from logs.
     * 
     * @param  string    $logs 
     * @access public
     * @return array|bool
     */
    public function getRevisionsFromLogs($logs)
    {
        if(!preg_match_all('|revision="(.*)"|', $logs, $results)) return false;
        $revisions = $results[1];
        return $revisions;
    }

    /**
     * Save the last revision.
     * 
     * @param  int    $revision 
     * @access public
     * @return void
     */
    public function saveLastRevision($revision)
    {
        file_put_contents($this->logFile, $revision);
    }

    /**
     * Pring log.
     * 
     * @param  sting    $log 
     * @access public
     * @return void
     */
    public function printLog($log)
    {
        echo date('Y-m-d H:i:s') . " $log\n";
    }
}