/**
* 
* @module Kiwi
* @submodule Files 
* @main Files
*/

module Kiwi.Files {

	/**
	* Holds a reference to all of the data Files (json, xml, e.t.c) that are accessible on the State that this DataLibrary is on.
	*
	* @class DataLibrary
	* @namespace Kiwi.Files
	* @constructor
	* @param game {Kiwi.Game} The game that this DataLibrary belongs to.
	* @return {Kiwi.Files.DataLibrary}
	*
	*/
	export class DataLibrary {

		constructor(game: Kiwi.Game) {

			this._game = game;
			this.data = {};
		}

		/**
		* The type of object that this is.
		* @method objType
		* @return {String} "DataLibrary"
		* @public
		*/
		public objType(): string {
			return "DataLibrary";
		}

		/**
		* The game that this DataLibrary belongs to.
		* @property _game
		* @type Kiwi.Game
		* @private
		*/
		private _game: Kiwi.Game;

		/**
		* Contains all of the data that this available.
		* @property data
		* @type Object
		* @public
		*/
		public data;

		/**
		* Resets the Data Library and makes it ready for the next state.
		* @method clear
		* @public
		*/
		public clear() {
			for (var prop in this.data) {
				delete this.data[prop];
			}
		}

		/**
		* Adds a new data file to the DataLibrary.
		* @method add
		* @param dataFile {Kiwi.Files.File} The File that is to be added.
		* @public
		*/
		public add(dataFile: Kiwi.Files.File) {

			switch (dataFile.dataType) {
				case Kiwi.Files.File.JSON:
				case Kiwi.Files.File.XML :
				case Kiwi.Files.File.BINARY_DATA:
				case Kiwi.Files.File.TEXT_DATA:
					
					this.data[dataFile.key] = dataFile;
					break;
				
				default:
				   //Image file is of unknown type and was not added to data library
					break;
			}

		}

		/**
	   * Rebuild the library from a fileStore. Clears the library and repopulates it.
	   * @method rebuild
	   * @param fileStore {Kiwi.Files.FileStore} The fileStore which is being used 
	   * @param state {Kiwi.State} The State so that we know which DataLibrary to add the files tot.
	   * @public
	   */
		public rebuild(fileStore: Kiwi.Files.FileStore, state: Kiwi.State) {
			this.clear();
			Kiwi.Log.log("Kiwi.DataLibrary: Rebuilding Data Library", '#rebuild');
			

			var fileStoreKeys = fileStore.keys;
			for (var i = 0; i < fileStoreKeys.length; i++) {
				var file: Kiwi.Files.File = this._game.fileStore.getFile(fileStoreKeys[i]);
				if (file.isData) {
					Kiwi.Log.log("  Kiwi.DataLibrary: Adding Data: " + file.name, '#rebuild', '#adding');
					state.dataLibrary.add(file);
				}
			}
		}

	}

}