<?php
/* -----------------------------------------------------------------------------
  Theme      : Gally/default
  Author     : Grum
    email    : grum@piwigo.org
    website  : http://photos.grum.fr

    << May the Little SpaceFrog be with you ! >>
  ------------------------------------------------------------------------------

  This is the default class for the Gally themes interfaces managment

  --------------------------------------------------------------------------- */

include_once(PHPWG_ROOT_PATH.'admin/include/tabsheet.class.php');
include_once('Conf.class.inc.php');

load_language('theme.lang', PHPWG_THEMES_PATH.'gally-default/');

class GallyDefault
{
  const THEME_VERSION = '1.4.0';

  private $directories=Array(
    'templates.parent' => '',
    'templates.local' => '',
    'conf.parent' => '',
    'conf.local' => ''
  );
  private $pageLink;
  private $authorizedValues=Array();
  protected $config;
  protected $tabsheet;
  protected $themeProperties = Array(
      'name' => 'Gally/Default',
      'version' => self::THEME_VERSION
    );


  /**
   * function used to activate a theme
   *
   * @param String $themeId : theme's id (for example 'gally-lapis-lazulis')
   * @param String $themeVersion : theme's release (not gally-default release)
   * @param String $gallyDefaultNeeded : gally-default release needed
   * @param &Array $errors : array of error messages
   */
  static public function activate($themeId, $themeVersion, $gallyDefaultNeeded, $errors)
  {
    if(strnatcmp(self::THEME_VERSION, $gallyDefaultNeeded)<0)
    {
      if(!is_array($errors))
      {
        if($errors!='')
        {
          $errors=array($errors);
        }
        else
        {
          $errors=array();
        }
      }

      $errors[]=sprintf(l10n('This theme needs Gally-default theme v%s; actually, Gally-default version is %s.'), $gallyDefaultNeeded, self::THEME_VERSION);
    }
    else
    {
      Conf::init($themeId);
    }
    return($errors);
  }

  /**
   * function used to deactivate a theme
   *
   */
  static public function deactivate()
  {
  }

  /**
   *
   * @param String $themeName : the name of the theme
   * @param String $templateDirectory : directory for the admin.tpl template
   *                                    file ; if no directory is given, assume
   *                                    to use the gally/default admin.tpl file
   * @param String $confDirectory     : directory for the conf files
   *                                    if no directory is given, assume to use
   *                                    the gally/default conf files
   * @param Boolean $manage           : if true, manage display interface when
   *                                    the class is instancied
   */
  public function __construct($themeName, $templateDirectory="", $confDirectory="", $manage=true)
  {
    $this->setDirectoryPrivate('templates.parent', dirname(__FILE__));
    $this->setDirectoryPrivate('templates.local', $templateDirectory);


    $this->setDirectoryPrivate('conf.parent', dirname(dirname(__FILE__)).'/conf');
    $this->setDirectoryPrivate('conf.local', $confDirectory);

    if($themeName!="")
    {
      $this->themeProperties['name']=$themeName;
    }

    $this->pageLink="admin.php?page=theme&amp;theme=".$_REQUEST['theme'];

    $this->authorizedValues['fGally_tabsheet']=Array('img_interface', 'img_high_res', 'img_other');

    $this->loadConfig();
    $this->initTabSheet();

    if($manage)
    {
      $this->manage();
    }
  }

  public function __destruct()
  {
    unset($this->tabsheet);
    unset($this->config);
    unset($this->directories);
    unset($this->authorizedValues);
    unset($this->themeProperties);
  }

  /**
   *
   */
  public function loadConfig()
  {
    $this->config = new Conf();
    $this->config->setFileName($this->directories['conf.parent']."/default.conf");
    $this->config->read();
    $this->config->setFileName($this->directories['conf.local']."/default.conf");
    $this->config->read(false);
    $this->config->setFileName(PHPWG_ROOT_PATH."local/themes/".basename(dirname($this->directories['conf.local']))."/conf/local.conf");
    $this->config->read(false);
  }


  /**
   *
   */
  public function initTabSheet()
  {
    $this->tabsheet = new tabsheet();
    $this->tabsheet->add('img_interface',
                          l10n('gally_img_interface'),
                          $this->getAdminThemeLink().'&amp;fGally_tabsheet=img_interface');
    $this->tabsheet->add('img_high_res',
                          l10n('gally_img_high_res'),
                          $this->getAdminThemeLink().'&amp;fGally_tabsheet=img_high_res');
    $this->tabsheet->add('img_other',
                          l10n('gally_img_other'),
                          $this->getAdminThemeLink().'&amp;fGally_tabsheet=img_other');
  }

  /**
   * manage the display of the admin theme interface
   *
   */
  public function manage()
  {
    global $template;

    $template->set_filenames(array(
        'theme_admin_content' => $this->getFile('templates', 'admin.tpl')));

    $this->initRequest();
    $this->manageConfig();

    $this->tabsheet->select($_REQUEST['fGally_tabsheet']);
    $this->tabsheet->assign();

    $file=$this->getFile('templates', 'gally_'.$_REQUEST['fGally_tabsheet'].'.tpl');
    if($file!==false)
    {
      $template->set_filename('body_page', $file);

      $template->assign('options', $this->config->getConf());
      $template->assign_var_from_handle('GALLY_BODY_PAGE', 'body_page');

      $template->assign('gally', $this->themeProperties);
      $template->assign_var_from_handle('ADMIN_CONTENT', 'theme_admin_content');
    }
  }


  /**
   * @return String : the url of the theme admin page
   */
  public function getAdminThemeLink()
  {
    return($this->pageLink);
  }

  /**
   *
   */
  public function getDirectory($type)
  {
    if($type=='templates.local' or $type=='templates.parent' or
       $type=='conf.local' or $type=='conf.parent')
    {
      return($this->directories[$type]);
    }
    else
    {
      return(false);
    }
  }

  /**
   *
   */
  public function setDirectory($type, $directory)
  {
    if($type=='templates.local' or $type=='conf.local')
    {
      $this->setDirectoryPrivate($type, $directory);
    }
    return($this->directories[$type]);
  }

  /**
   *
   */
  private function setDirectoryPrivate($type, $directory)
  {
    if(substr($directory, -1)=="/") $directory=substr($directory, 0, -1);

    if(file_exists($directory)) $this->directories[$type]=$directory;

    return($this->directories[$type]);
  }

  /**
   *
   *
   */
  public function getFile($type, $fileName)
  {
    if(@file_exists($this->directories[$type.'.local'].'/'.$fileName))
    {
      return($this->directories[$type.'.local'].'/'.$fileName);
    }
    elseif(@file_exists($this->directories[$type.'.parent'].'/'.$fileName))
    {
      return($this->directories[$type.'.parent'].'/'.$fileName);
    }
    return(false);
  }


  /**
   * check and initialize all needed properties in the $_REQUEST var
   */
  protected function initRequest()
  {
    //initialise $REQUEST values if not defined
    if(!array_key_exists('fGally_tabsheet', $_REQUEST))
    {
      $_REQUEST['fGally_tabsheet']='img_interface';
    }

    if(!$this->isAuthorizedValues('fGally_tabsheet', $_REQUEST['fGally_tabsheet']))
    {
      $_REQUEST['fGally_tabsheet']='img_interface';
    }
  }


  protected function manageConfig()
  {
    $config=$this->config->getConf();

    if(isset($_POST['submit_gally']))
    {
      foreach($config as $key => $val)
      {
        if(isset($_POST['f_'.$key]))
        {
          $config[$key] = stripslashes($_REQUEST['f_'.$key]);
        }
      }
      $this->config->setConf($config, false);
      $this->displayResult(l10n("gally_save_local_conf"), $this->config->write());
    }
  }

  protected function displayResult($action_msg, $result)
  {
    global $page;

    if($result)
    {
      array_push($page['infos'], $action_msg);
      array_push($page['infos'], l10n("gally_action_ok"));
    }
    else
    {
      array_push($page['errors'], $action_msg);
      array_push($page['errors'], l10n("gally_action_ko"));
    }
  }

  protected function isAuthorizedValues($key, $value)
  {
    if(array_key_exists($key, $this->authorizedValues))
    {
      if(in_array($value, $this->authorizedValues[$key]))
      {
        return(true);
      }
    }
    return(false);
  }

  protected function addAuthorizedValue($key, $value)
  {
    if(array_key_exists($key, $this->authorizedValues))
    {
      if(!in_array($value, $this->authorizedValues[$key]))
      {
        $this->authorizedValues[$key][]=$value;
      }
    }
    else
    {
      $this->authorizedValues[$key]=Array($value);
    }
  }

  protected function removeAuthorizedValue($key, $value)
  {
    if(array_key_exists($key, $this->authorizedValues))
    {
      $key2=array_search($value, $this->authorizedValues[$key]);
      if($key2!==false)
      {
        unset($this->authorizedValues[$key][$key2]);
      }
    }
  }

}


?>