<?php
/**
 * iF.SVNAdmin
 * Copyright (c) 2010 by Manuel Freiholz
 * http://www.insanefactory.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; version 2
 * of the License.
 *
 * 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.
 */
namespace svnadmin\providers
{
  class RepositoryViewProvider implements \svnadmin\core\interfaces\IRepositoryViewProvider
  {
    // Public members.
    // The directory where all the repositories takes place.
    public $svnParentPath = NULL;
    
    // Private members.
    private $m_svnclient = NULL;
    private $m_init_done = false;
    private static $m_instance = NULL;

    /**
     * Gets the singelton instance of this object.
     *
     * @return \svnadmin\providers\RepositoryViewProvider
     */
    public static function getInstance()
    {
      if( self::$m_instance == NULL )
      {
        self::$m_instance = new RepositoryViewProvider;
      }
      return self::$m_instance;
    }

    ////////////////////////////////////////////////////////////////////////////
    // IInit implementations
    ////////////////////////////////////////////////////////////////////////////

    public function init()
    {
      if( !$this->m_init_done )
      {
        global $appEngine;
        $this->svnParentPath = $appEngine->getConfig()->getValue("Repositories:svnclient", "SVNParentPath");

        $this->m_init_done = true;
        $this->m_svnclient = new \IF_SVNClientC();
        return $this->m_svnclient->init($appEngine->getConfig()->getValue("Repositories:svnclient", "SvnExecutable"));
      }
      return true;
    }

    ////////////////////////////////////////////////////////////////////////////
    // IViewProvider
    ////////////////////////////////////////////////////////////////////////////

    public function isUpdateable()
    { // Nothing to do here...
      return false;
    }

    public function update()
    { // Nothing to do here...
      return false;
    }

    ////////////////////////////////////////////////////////////////////////////
    // IRepositoryViewProvider
    ////////////////////////////////////////////////////////////////////////////

    public function getRepositories()
    {
      $repoList = array();

      if (!file_exists($this->svnParentPath))
        throw new \Exception("The repository parent path doesn't exists: " . $this->svnParentPath);

      $hd = opendir( $this->svnParentPath );
      while( ($file = readdir($hd)) !== false )
      {
        $invalid = strpos( $file, "." );
        if( $invalid !== FALSE && $invalid == 0 )
        {
          continue;
        }

        if( is_dir( $this->svnParentPath . "/" . $file ) )
        {
          $o = new \svnadmin\core\entities\Repository();
          $o->name = $file;
          $o->path = "/";
          array_push( $repoList, $o );
        }
      }
      closedir( $hd );
      return $repoList;
    }

    public function listPath(  $oRepository, $relativePath  )
    {
      // Absolute path to the repository.
      $repo = $this->svnParentPath;
      $repo.= "/";
      $repo.= $oRepository->name;
      
      if ($relativePath == "/")
        $relativePath = "";
      
      // Append the relative path.
      $uri = $repo."/".$relativePath;
      
      $ret = array();

      // Get the file list.
      $svn_entry_list = $this->m_svnclient->svn_list($uri);
      if ($svn_entry_list === null)
        return $ret;
        
      if (empty($svn_entry_list->entries))
        return $ret;
      
      foreach ($svn_entry_list->entries as $entry)
      {
        $oRP = new \svnadmin\core\entities\RepositoryPath();
        $oRP->parent = $relativePath;
        $oRP->name = $entry->name;
        $oRP->type = ($entry->isdir ? 0 : 1);
        $oRP->author = $entry->author;
        $oRP->revision = $entry->rev;
        $oRP->date = $entry->date;
        $ret[] = $oRP;
      }
      return $ret;
    }

  } // class end
} // namespace end
?>