<?php

/**
 * @file
 * TeamSpeak 3 PHP Framework
 *
 * $Id: Text.php 06/06/2016 22:27:13 scp@Svens-iMac $
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 * @package   TeamSpeak3
 * @version   1.1.24
 * @author    Sven 'ScP' Paulsen
 * @copyright Copyright (c) 2010 by Planet TeamSpeak. All rights reserved.
 */

/**
 * @class TeamSpeak3_Viewer_Text
 * @brief Renders nodes used in ASCII-based TeamSpeak 3 viewers.
 */
class TeamSpeak3_Viewer_Text implements TeamSpeak3_Viewer_Interface
{
  /**
   * A pre-defined pattern used to display a node in a TeamSpeak 3 viewer.
   *
   * @var string
   */
  protected $pattern = "%0%1 %2\n";

  /**
   * Returns the code needed to display a node in a TeamSpeak 3 viewer.
   *
   * @param  TeamSpeak3_Node_Abstract $node
   * @param  array $siblings
   * @return string
   */
  public function fetchObject(TeamSpeak3_Node_Abstract $node, array $siblings = array())
  {
    $this->currObj = $node;
    $this->currSib = $siblings;

    $args = array(
      $this->getPrefix(),
      $this->getCorpusIcon(),
      $this->getCorpusName(),
    );

    return TeamSpeak3_Helper_String::factory($this->pattern)->arg($args);
  }

  /**
   * Returns the ASCII string to display the prefix of the current node.
   *
   * @return string
   */
  protected function getPrefix()
  {
    $prefix = "";

    if(count($this->currSib))
    {
      $last = array_pop($this->currSib);

      foreach($this->currSib as $sibling)
      {
        $prefix .=  ($sibling) ? "| " : "  ";
      }

      $prefix .= ($last) ? "\\-" : "|-";
    }

    return $prefix;
  }

  /**
   * Returns an ASCII string which can be used to display the status icon for a
   * TeamSpeak_Node_Abstract object.
   *
   * @return string
   */
  protected function getCorpusIcon()
  {
    return $this->currObj->getSymbol();
  }

  /**
   * Returns a string for the current corpus element which contains the display name
   * for the current TeamSpeak_Node_Abstract object.
   *
   * @return string
   */
  protected function getCorpusName()
  {
    return $this->currObj;
  }
}