<?php
/*
 * Copyright (c) 2011 - OpenSLX GmbH, RZ Uni Freiburg
* This program is free software distributed under the GPL version 2.
* See http://gpl.openslx.org/
*
* If you have any feedback please consult http://feedback.openslx.org/ and
* send your suggestions, praise, or complaints to feedback@openslx.org
*
* General information about OpenSLX can be found at http://openslx.org/
*/

class Application_Model_GroupMapper {

  protected $_dbTable;

  public function findBy($where, $array = false) {
    foreach($where as $k => $v) {
      if($v != null)
        { $where2[] = "$k = '$v'"; }
      else
        { $where2[] = "$k IS NULL"; }
    }
    $where = implode(" AND " , $where2);

    try {
      $db = Zend_Db_Table::getDefaultAdapter();
      $select = $this->getDbTable()->select()
                ->from($this->_dbTable)
                ->where($where);
      $stmt = $select->query();
      $result = $stmt->fetchAll();

      if(!$array) {
        $entries = array();
        foreach ($result as $row) {
          $entry = new Application_Model_Group($row);
          $entry->setID($row['groupID']);
          $entries[] = $entry;
        }
        return $entries;
      } else {
        return $result;
      }

    } catch (Zend_Exception $e) {
      echo "Error message 2: " . $e->getMessage() . "\n";
    }
  }

  public function setDbTable($dbTable) {
    if (is_string($dbTable)) {
      $dbTable = new $dbTable();
    }

    if (!$dbTable instanceof Zend_Db_Table_Abstract) {
      throw new Exception('Invalid table data gateway provided');
    }

    $this->_dbTable = $dbTable;

    return $this;
  }

  public function getDbTable() {
    if (null === $this->_dbTable) {
      $this->setDbTable('Application_Model_DbTable_Group');
    }

    return $this->_dbTable;
  }

  public function save(Application_Model_Group $group) {

    $data = array('groupID' => $group->getID() , 'title' => $group->getTitle() , 'description' => $group->getDescription() );

    if (null === ($id = $group->getID()) ) {
      unset($data['groupID']);
      $this->getDbTable()->insert($data);
    } else {
      $this->getDbTable()->update($data, array('groupID = ?' => $id));
    }
  }

  public function delete(Application_Model_Group $group) {
    if (null === ($id = $group->getID()) ) {
      return;
    } else {
      $this->getDbTable()->delete(array('groupID = ?' => $id));
    }
  }

  public function find($id, Application_Model_Group $group = null) {
    $return = false;
    if($group == null) {
      $return = true;
    }
    if($return) {
      $group = new Application_Model_Group();
    }
    $result = $this->getDbTable()->find($id);
    if (0 == count($result)) {
      return;
    }

    $row = $result->current();

    $group->setID($row->groupID)->setTitle($row->title)->setDescription($row->description);
    if($return) {
      return $group;
    }
  }

  public function fetchAll() {
    $resultSet = $this->getDbTable()->fetchAll();
    $entries   = array();
    foreach ($resultSet as $row) {
      $entry = new Application_Model_Group();

      $entry->setID($row->groupID)->setTitle($row->title)->setDescription($row->description);

      $entries[] = $entry;
    }
    return $entries;
  }

  public function compare(Application_Model_Group $v1, Application_Model_Group $v2) {
    $vv1 = $v1->toArray();
    $vv2 = $v2->toArray();
    return array_diff($vv1, $vv2);
  }


}