var save = JSON.parse(localStorage.getItem('save')) || {};

return {
	get: get,
	set: set
};

function move(coordinates) {
	if(coordinates.path.length == 1) {
		return coordinates;
	} else {
		var newFocus = coordinates.focus[coordinates.path[0]];
		if (newFocus != undefined) {
			var newCoordinates = {path: coordinates.path.slice(1), focus: newFocus};
			return move(newCoordinates);
		} else {
			return coordinates;
		}
	}
}

function get(key) {
	if(key != undefined) {
		var outputCoordinates = move({path: key.split('.'), focus: save});
		if(outputCoordinates.focus != undefined && outputCoordinates.path.length == 1) {
			return outputCoordinates.focus[outputCoordinates.path[0]]
		} else {
			return null;
		}
	} else {
		return save;
	}
}

function set(key, value) {
	if(key != undefined) {
		var outputCoordinates = move({path: key.split('.'), focus: save});
		while(outputCoordinates.path.length > 1) {
			outputCoordinates.focus[outputCoordinates.path[0]] = {};
			outputCoordinates.focus = outputCoordinates.focus[outputCoordinates.path[0]];
			outputCoordinates.path = outputCoordinates.path.slice(1);
		}
		outputCoordinates.focus[outputCoordinates.path[0]] = value;
	} else {
		save = value;
	}
	localStorage.setItem('save', JSON.stringify(save));
}