<?
require_once ("../lib/setting.inc.php");
require_once ("../lib/group.inc.php");
require_once ("../lib/i18n.inc.php");


class ShowHistory
{
	private $status;
	private $undo_id = 0;
	private $redo_id = 0;

	
	public function __construct ()
	{
		$this->status = $this->status ();
	}
	
	//***************************
	// GETTER / SETTER
	//***************************
	public function __get ($name)
	{
		switch ($name) {
		case "may_set_online":
			return Ticket::getEditRight () & Base::MODE_ONLINE;
		case "historyList":
			return $this->status['values'];
		case "status":
			$status = $this->status;
			return $status;
		default:
			return $this->$name;
		}
	}
	
	public function __set ($name, $value)
	{
	}

	private function status ()
	{
		$status = array ();
		
		$status['active_history'] = User::get ("active_history_id", 0);

		$last_row_id = 0;
		$status['values'] = array ();
		foreach (History::getList () as $row) {
			if (!empty ($_SESSION['cms']['history']['multiuser']) || $row['user_id']==User::get ("id")) {
				$group = null;
				if ($row['table_name'] == "element") {
					$element = new Element (array ('id' => $row['row_id']));
					$group = new Group (array ('id' => $element->group_id));
				}
				if ($row['table_name'] == "group") {
					$group = new Group (array ('id' => $row['row_id']));
				}
				if ($group) {
					$row['url'] = $group->url;
					$row['may_select'] = $row['status']!=History::STATUS_ACTIVE && ((!($group->status & Base::STATUS_ONLINE) || ($group->status & Base::STATUS_ONLINE) && ($group->edit_right & User::RIGHT_ONLINE)) && ($group->edit_right & User::RIGHT_EDIT));
				} else {
					$row['may_select'] = $row['status']!=History::STATUS_ACTIVE && (User::get ("is_admin") || $row['user_id']==User::get ("id"));
				}
				$row['is_active'] = $row['status']==History::STATUS_ACTIVE;
				$row['deleted'] = $row['status']==History::STATUS_ERASED;
				$row['title'] = User::get ('is_admin') ? "#{$row['id']}" : "";
				$status['values'][] = $row;
				
				// undo / redo
				if ($last_row_id  &&  $last_row_id == $status['active_history']) {
					$this->redo_id = $row['id'];
				}
				if ($row['id'] == $status['active_history']  ||  !$status['active_history'] && $last_row_id) {
					$this->undo_id = $last_row_id;
				}
				if ($row['may_select']  ||  $row['id'] == $status['active_history']) {
					$last_row_id = $row['id'];
				}
			}
		}
		$status['values'] = array_reverse ($status['values']);
		
		$status['messages'] = array ();
		
		$status['multiuser'] = (!empty ($_SESSION['cms']['history']['multiuser']));
		
		$status['quickbar']['disabledButtons'] = array ();
		
		if (!$this->undo_id) {
			$status['quickbar']['disabledButtons']['undo'] = true;
		}
		if (!$this->redo_id) {
			$status['quickbar']['disabledButtons']['redo'] = true;
		}
		
		$status['statusbar']['value'] = "";	// Elementname, User, letzte Änderung,...
		if (User::get ("is_admin")) {
			$status['statusbar']['value'] .= "";
		}
		
		return $status;
	}
	
	public function select ($id)
	{
		if ($row = History::get ($id)) {
			if ($row['table_name'] == "element") {
				$element = new Element (array ('id' => $row['row_id']));
				$row['table_name'] = "group";
				$row['row_id'] = $element->group_id;
			}
			if ($row['table_name'] == "group") {
				$group = new Group (array ('id' => $row['row_id']));
				// Prüfen ob User berechtigt ist diese Aktion durchzuführen
				if ((!($group->status & Base::STATUS_ONLINE) || ($group->status & Base::STATUS_ONLINE) && ($group->edit_right & User::RIGHT_ONLINE)) && ($group->edit_right & User::RIGHT_EDIT)) {
					History::restore ($row['id']);
				}
			} else {
				History::restore ($row['id']);
			}
			User::set (User::get ('id'), array ("active_history_id"=>$id), false);
		}
	}
	
	public function undo ()
	{
		$this->select ($this->undo_id);
	}
	
	public function redo ()
	{
		$this->select ($this->redo_id);
	}
	
	public function multiuser ()
	{
		$_SESSION['cms']['history']['multiuser'] = empty ($_SESSION['cms']['history']['multiuser']);
	}
	
	public function message ($text)
	{
		return I18n::tr ("edit", "show_history/$text", $text);
	}
	
	// Wandelt das gegebene Array/Text in eine Form um, die direkt einer JavaScript Variablen zugewiesen werden kann
	public function toJavaScript ($value)
	{
		if (is_array ($value)) {
			$values = array ();
			foreach ($value as $key => $val) {
				$values[] = "'$key':".$this->toJavaScript ($val);
			}
			return "{".implode (",", $values)."}";
		} else {
			$value = Database::escape ($value);
			return ($value===true) ? "true" : (($value===false) ? "false" : "'$value'");
		}
	}
}
?>