<?php
/****************************************************************************************\
**   JoomGallery 3                                                                      **
**   By: JoomGallery::ProjectTeam                                                       **
**   Copyright (C) 2008 - 2021  JoomGallery::ProjectTeam                                **
**   Based on: JoomGallery 1.0.0 by JoomGallery::ProjectTeam                            **
**   Released under GNU GPL Public License                                              **
**   License: http://www.gnu.org/copyleft/gpl.html or have a look                       **
**   at administrator/components/com_joomgallery/LICENSE.TXT                            **
\****************************************************************************************/

defined('_JEXEC') or die('Direct Access to this location is not allowed.');

jimport('joomla.form.form');

/**
 * Edit multiple images model
 *
 * @package JoomGallery
 * @since   1.5.5
 */
class JoomGalleryModelEditimages extends JoomGalleryModel
{
  /**
   * Images data array
   *
   * @var     array
   */
  protected $_images;

  /**
   * Returns the query for loading the image data
   *
   * @return  object    The query to be used to retrieve the image data from the database
   * @since   1.5.5
   */
  protected function _buildQuery()
  {
    $cid = JRequest::getVar('cid', array(), '', 'array');

    // Sanitize request inputs
    JArrayHelper::toInteger($cid, array($cid));

    $query = $this->_db->getQuery(true)
          ->select('a.*, c.cid AS category_id, c.name AS category_name, g.title AS groupname')
          ->from(_JOOM_TABLE_IMAGES.' AS a')
          ->leftJoin(_JOOM_TABLE_CATEGORIES.' AS c ON c.cid = a.id')
          ->leftJoin('#__viewlevels AS g ON g.id = a.access')
          ->where('a.id IN ('.implode(',', $cid).')');

    return $query;
  }

  /**
   * Retrieves the data of the selected images
   *
   * @return  array   Array of objects containing the images data from the database
   * @since   1.5.5
   */
  public function getImages()
  {
    // Lets load the data if it doesn't already exist
    if(empty($this->_images))
    {
      $query = $this->_buildQuery();
      $this->_images = $this->_getList($query);
    }

    $this->_mainframe->triggerEvent('onContentPrepareData', array(_JOOM_OPTION.'.image.batch', $this->_images));

    return $this->_images;
  }

  /**
   * Method to get the 'editimages' form
   *
   * @return  mixed   A JForm object on success, false on failure
   * @since 2.0
   */
  public function getForm()
  {
    JForm::addFormPath(JPATH_COMPONENT.'/models/forms');
    JForm::addFieldPath(JPATH_COMPONENT.'/models/fields');
    JForm::addRulePath(JPATH_COMPONENT.'/models/rules');

    $form = JForm::getInstance(_JOOM_OPTION.'.editimages', 'editimages');
    if(empty($form))
    {
      return false;
    }

    $data = array();
    // Allow plugins to preprocess the form
    $this->preprocessForm($form, $data);

    return $form;
  }

  /**
   * Method to allow plugins to preprocess the form
   *
   * @param   JForm   $form   A JForm object.
   * @param   mixed   $data   The data expected for the form.
   * @param   string  $group  The name of the plugin group to import (defaults to "content").
   * @return  void
   * @since   3.6
   */
  protected function preprocessForm(JForm $form, $data, $group = 'content')
  {
    // Import the appropriate plugin group
    JPluginHelper::importPlugin($group);

    // Get the dispatcher
    $dispatcher = JDispatcher::getInstance();

    // Trigger the form preparation event
    $results = $dispatcher->trigger('onContentPrepareForm', array($form, $data));

    // Check for errors encountered while preparing the form
    if(count($results) && in_array(false, $results, true))
    {
      // Get the last error
      $error = $dispatcher->getError();

      if(!($error instanceof Exception))
      {
        throw new Exception($error);
      }
    }
  }
}