<?php

Lib::loadClass('UserProfile');

/**
 * User Bookmark
 * $_SESSION['USER_PROFILE'][section][key] = val;
 */
class UserBookmarks {

	private $_sesKey = 'UserBookmarksList';
	static function loadStorage() {
		return (!empty($_SESSION['USER_PROFILE']['UserBookmarksList']))
			? $_SESSION['USER_PROFILE']['UserBookmarksList']
			: array();
	}
	static function _saveStorageValue($key, $value) {
		$_SESSION['USER_PROFILE']['UserBookmarksList'][$key] = $value;
	}
	static function _saveNewStorage($values) {
		$_SESSION['USER_PROFILE']['UserBookmarksList'] = $values;
	}

	public function __construct() {
		UserProfile::load();
	}

	public static function getInstance() {
		$userBookmarks = new UserBookmarks();
		return $userBookmarks;
	}

	public function getBookmarks() {
		return self::loadStorage();
	}

	/*
	 * Add bookmark
	 */
	public function addBookmark($zasobID) {
		if (!array_key_exists($zasobID, $this->getBookmarks())) {
			self::_saveStorageValue($zasobID, '');
		}
	}

	public function changeBookmark($zasobID, $cls) {
		self::_saveStorageValue($zasobID, $cls);
	}

	public function sortBookmarks($idsOrder) {
		$bookmarks = $this->getBookmarks();
		if (empty($bookmarks)) return;
		if (empty($idsOrder)) return;
		$sortedBookmarks = array();
		foreach ($idsOrder as $id) {
			if (array_key_exists($id, $bookmarks)) {
				$sortedBookmarks[$id] = $bookmarks[$id];
			}
		}
		self::_saveNewStorage($sortedBookmarks);
	}

	public function hasBookmark($zasobID) {
		return array_key_exists($zasobID, $this->getBookmarks());
	}

	public function removeBookmark($zasobID) {
		$bookmarks = array();
		foreach ($this->getBookmarks() as $kZasobID => $vClass) {
			if ($kZasobID == $zasobID) continue;
			$bookmarks[$kZasobID]= $vClass;
		}
		self::_saveNewStorage($bookmarks);
	}

}