<?php
/* For licensing terms, see /license.txt */
/**
*	@package chamilo.admin
*/
// name of the language file that needs to be included
$language_file = array('admin', 'registration');

// resetting the course information
$cidReset = true;

// including the global library
require '../inc/global.inc.php';

// section for the tabs
$this_section=SECTION_PLATFORM_ADMIN;

// user permissions
api_protect_admin_script();

// Database table definitions
$table_admin				= Database :: get_main_table(TABLE_MAIN_ADMIN);
$table_user 				= Database :: get_main_table(TABLE_MAIN_USER);
$table_userfields	 		= Database :: get_main_table(TABLE_MAIN_USER_FIELD);
$table_userfields_options 	= Database :: get_main_table(TABLE_MAIN_USER_FIELD_OPTIONS);
$table_userfields_values 	= Database :: get_main_table(TABLE_MAIN_USER_FIELD_VALUES);

// breadcrumbs
$interbreadcrumb[] = array ('url' => 'index.php', 'name' => get_lang('PlatformAdmin'));
$interbreadcrumb[] = array ('url' => 'user_fields.php', 'name' => get_lang('UserFields'));
$interbreadcrumb[] = array ('url' => 'user_fields_add.php?action=edit&field_id='.Security::remove_XSS($_GET['field_id']).'&amp;sec_token='.$_SESSION['sec_token'], 'name' => get_lang('EditUserFields'));

// name of the tools
$tool_name = get_lang('UserFieldsSortOptions');

// display header
Display::display_header($tool_name);

if (isset ($_GET['action']))
{
	$check = Security::check_token('get');
	if($check)
	{
		switch ($_GET['action'])
		{
			case 'moveup' :
				if (api_is_platform_admin() && !empty($_GET['option_id']))
				{
					if (move_user_field_option('moveup', $_GET['option_id']))
					{
						Display :: display_confirmation_message(get_lang('FieldOptionMovedUp'));
					}
					else
					{
						Display :: display_error_message(get_lang('CannotMoveFieldOption'));
					}
				}
				break;
			case 'movedown' :
				if (api_is_platform_admin() && !empty($_GET['option_id']))
				{
					if (move_user_field_option('movedown', $_GET['option_id']))
					{
						Display :: display_confirmation_message(get_lang('FieldOptionMovedDown'));
					}
					else
					{
						Display :: display_error_message(get_lang('CannotMoveFieldOption'));
					}
				}
				break;
		}
	}
}

// getting all the information of the field
$field_info = UserManager::get_extra_field_information($_GET['field_id']);
echo '<strong>'.$field_info['3'].'</strong><br />';

// the total number of options (used in the actions_filter function but declared here for performance reasons)
$number_of_options = get_number_of_options();

// displaying the sortable table
$parameters['sec_token'] = Security::get_token();
$parameters['field_id'] = Security::remove_XSS($_GET['field_id']);
$table = new SortableTable('options', 'get_number_of_options', 'get_options_data',2);
$table->set_additional_parameters($parameters);
$table->set_header(0, get_lang('DisplayOrder'), false);
$table->set_header(1, get_lang('OptionText'), false);
$table->set_header(2, get_lang('Actions'), false);
$table->set_column_filter(2, 'actions_filter');
$table->display();

// display footer
Display::display_footer();


function get_options_data($from, $number_of_items, $column, $direction)
{
	// Database table definition
	$table_userfields_options 	= Database :: get_main_table(TABLE_MAIN_USER_FIELD_OPTIONS);

	// The sql statement
	$sql = "SELECT
				option_order 		AS col0,
				option_display_text	AS col1,
				id 					AS col2
			FROM $table_userfields_options WHERE field_id='".Database::escape_string($_GET['field_id'])."' ORDER BY option_order ASC";
	$sql .= " LIMIT $from,$number_of_items";
	$res = Database::query($sql);
	$return = array ();
	while ($option = Database::fetch_row($res))
	{
		$return[] = $option;
	}
	return $return;
}

function get_number_of_options($from=null, $number_of_items=null, $column=null, $direction=null)
{
	// Database table definition
	$table_userfields_options 	= Database :: get_main_table(TABLE_MAIN_USER_FIELD_OPTIONS);

	// The sql statement
	$sql = "SELECT count(id) as total FROM $table_userfields_options WHERE field_id='".Database::escape_string($_GET['field_id'])."' ";
	$res = Database::query($sql);
	$row = Database::fetch_row($res);
	return $row[0];
}

function actions_filter($option_id,$url_params,$row)
{
	global $number_of_options;

	if ($row[0]<>1)
	{
		$return .= '<a href="'.api_get_self().'?action=moveup&amp;option_id='.$option_id.'&amp;field_id='.Security::remove_XSS($_GET['field_id']).'&amp;sec_token='.$_SESSION['sec_token'].'">'.Display::return_icon('up.gif', get_lang('Up')).'</a>';
	}
	else
	{
		$return .= Display::return_icon('blank.gif','',array('width'=>'21px'));
	}

	// the down icon only has to appear when the row can be moved down (all but the last row)
	if ($row[0]<>$number_of_options)
	{
		$return .= '<a href="'.api_get_self().'?action=movedown&amp;option_id='.$option_id.'&amp;field_id='.Security::remove_XSS($_GET['field_id']).'&amp;sec_token='.$_SESSION['sec_token'].'">'.Display::return_icon('down.gif', get_lang('Down')).'</a>';
	}
	return $return;
}

/**
 * Move a user defined field option up or down
 *
 * @param string $direction the direction we have to move the field to (up or down)
 * @param unknown_type $field_id
 *
 * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
 * @version July 2008
 * @since Dokeos 1.8.6
 */
function move_user_field_option($direction,$option_id)
{
	// Database table definition
	$table_userfields_options 	= Database :: get_main_table(TABLE_MAIN_USER_FIELD_OPTIONS);

	// check the parameters
	if (!in_array($direction,array('moveup','movedown')) OR !is_numeric($option_id))
	{
		return false;
	}

	// determine the SQL sort direction
	if ($direction == 'moveup')
	{
		$sortdirection = 'DESC';
	}
	else
	{
		$sortdirection = 'ASC';
	}

	$found = false;

	$sql = "SELECT id, option_order FROM $table_userfields_options  WHERE field_id='".Database::escape_string($_GET['field_id'])."' ORDER BY option_order $sortdirection";
	$result = Database::query($sql);
	while($row = Database::fetch_array($result))
	{
		if ($found)
		{
			$next_id = $row['id'];
			$next_order = $row['option_order'];
			break;
		}

		if ($option_id == $row['id'])
		{
			$this_id = $row['id'];
			$this_order = $row['option_order'];
			$found = true;
		}
	}

	$sql1 = "UPDATE ".$table_userfields_options." SET option_order = '".Database::escape_string($next_order)."' WHERE id =  '".Database::escape_string($this_id)."'";
	$sql2 = "UPDATE ".$table_userfields_options." SET option_order = '".Database::escape_string($this_order)."' WHERE id =  '".Database::escape_string($next_id)."'";
	Database::query($sql1);
	Database::query($sql2);

	return true;
}
?>