package
{
	import flash.utils.getDefinitionByName;

	public class BookAPI
	{
		private static var theBook:*;
		private static var once:Boolean = false;
		
		public function BookAPI() { }
		
		private static function bookRef():*
		{
			if (!once) { theBook = getDefinitionByName("com.oxylusflash.book.Global")["theBook"]; once = true; }
			return theBook;
		}
		
		/**
		 * Jump to page index.
		 * @param	pageIndex	Page index starting from 1.
		 */
		public static function jumpToPageIndex(pageIndex:int):void
		{
			if (bookRef()) bookRef().jumpTo(pageIndex - 1);
		}
		
		/**
		 * Jump to page id.
		 * @param	pageId	Page id.
		 */
		public static function jumpToPageId(pageId:String):void
		{
			if (bookRef()) bookRef().jumpTo(bookRef().pageIdToIndex(pageId));
		}
		
		/**
		 * Jump to next page.
		 */
		public static function nextPage():void
		{
			if (bookRef()) bookRef().nextPage();
		}
		
		/**
		 * Jump to previous page.
		 */
		public static function prevPage():void
		{
			if (bookRef()) bookRef().prevPage();
		}
		
		/**
		 * Jump to first page.
		 */
		public static function firstPage():void
		{
			if (bookRef()) bookRef().jumpToFirst();
		}
		
		/**
		 * Jump to last page.
		 */
		public static function lastPage():void
		{
			if (bookRef()) bookRef().jumpToLast();
		}
		
		/**
		 * Total pages.
		 */
		public static function get totalPages():int
		{
			if (bookRef()) return bookRef().numPages;
			return 0;
		}
		
		/**
		 * Current left page index, starting from -1.
		 */
		public static function get currentLeftPage():int
		{
			if (bookRef()) return bookRef().leftPageIndex;
			return -2;
		}
		
	}
	
}