<?php
/* SVN FILE: $Id: app_model.php 7945 2008-12-19 02:16:01Z gwoo $ */

/**
 * Application model for Cake.
 *
 * This file is application-wide model file. You can put all
 * application-wide model-related methods here.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.app
 * @since         CakePHP(tm) v 0.2.9
 * @version       $Revision: 7945 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */

/**
 * Application model for Cake.
 *
 * Add your application-wide methods in the class below, your models
 * will inherit them.
 *
 * @package       cake
 * @subpackage    cake.app
 */
class AppModel extends Model {

  var $actsAs = array('Containable', 'Linkable');

  /**
   * Get Enum Values
   * Snippet v0.1.3
   * http://cakeforge.org/snippet/detail.php?type=snippet&id=112
   *
   * Gets the enum values for MySQL 4 and 5 to use in selectTag()
   */
  function getEnumValues($columnName=null, $respectDefault=false)
  {
    if ($columnName==null) { return array(); } //no field specified

    //Get the name of the table
    $db =& ConnectionManager::getDataSource($this->useDbConfig);
    $tableName = $db->fullTableName($this, false);

    //Get the values for the specified column (database and version specific, needs testing)
    $result = $this->query("SHOW COLUMNS FROM {$tableName} LIKE '{$columnName}'");

    //figure out where in the result our Types are (this varies between mysql versions)
    $types = null;
    if     ( isset( $result[0]['COLUMNS']['Type'] ) ) {  //MySQL 5
      $types = $result[0]['COLUMNS']['Type']; $default = $result[0]['COLUMNS']['Default'];
    }
    elseif ( isset( $result[0][0]['Type'] ) )         {  //MySQL 4
      $types = $result[0][0]['Type']; $default = $result[0][0]['Default'];
    }
    else   { //types return not accounted for
      return array();
    }

    //Get the values
    return array_flip(array_merge(array(''), // MySQL sets 0 to be the empty string
				  explode("','", preg_replace("/(enum)\('(.+?)'\)/","\\2", $types))
				  ));
  } //end getEnumValues


  /**************************************************************************
   **************************************************************************
   **************************************************************************
   * function: statMerge
   *  - Merges summary data from $b into $a
   */

  function statsMerge (&$a, $b) {
    if (!isset($b))
      return;

    if (!isset($a)) {
      $a = $b;
    }
    elseif (!is_array($a) && !is_array($b)) {
      $a += $b;
    }
    elseif (is_array($a) && is_array($b)) {
      foreach (array_intersect_key($a, $b) AS $k => $v)
	{
	  if (preg_match("/^sp\./", $k))
	    $a[$k] .= '; ' . $b[$k];
	  else
	    $this->statsMerge($a[$k], $b[$k]);
	}
      $a = array_merge($a, array_diff_key($b, $a));
    }
    else {
      die ("Can't yet merge array and non-array stats");
    }
  }

  // Overriding pagination, since the stupid count mechanism blows.
  // This is also a crappy solution, especially if the query returns
  // a really large number of rows.  However, trying to untagle this
  // without changing a bunch of core code is near impossible.

  //var $paginate_rows_save;
  function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, &$extra = null) {
/*     pr("paginate"); */
/*     pr(array_merge(compact('conditions', 'fields', 'order', 'limit', 'page', 'recursive', 'extra'))); */
    if ($page > 1 && isset($limit))
      $offset = ($page - 1) * $limit;
    else
      $offset = 0;

    if (!isset($extra['results']))
      die("Why isn't results set!?!");

    $results = $extra['results'];
    unset($extra['results']);
    return array_slice($results, $offset, $limit);
  }
  function paginateCount($conditions = null, $recursive = null, &$extra = null) {
/*     pr("paginateCount"); */
/*     pr(compact('conditions', 'recursive', 'extra')); */

    if (isset($extra['results'])) {
      // Beauty! The results are already in!
      // This happens if the user sets up a complex query
      // and passes us the result to paginate.
      $results = $extra['results'];
    }
    elseif (isset($extra['query'])) {
      // Perform the query directly... forget all the find B.S.
      $results = $this->query($extra['query']);
    }
    else {
      if (!isset($recursive))
	$recursive = $this->recursive;

      $parameters = array_merge(compact('conditions', 'recursive'), $extra);
      $results = $this->find('all', $parameters);
    }

    //$this->paginate_rows_save = $results;
    //return count($this->paginate_rows_save);

    if (!isset($extra['results']))
      $extra['results'] = $results;

    return count($results);
  }

}