package jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer;

import java.nio.ByteBuffer;

import fj.Ord;
import fj.data.List;
import fj.data.Option;
import fj.data.TreeMap;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.core.Children;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.Operation;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.Parameter;

public class EditCache
{
	private final List<Operation> operations;
	private final TreeMap<String,Operation> attrCache;
	private final List<Operation> childrenCache;
	
	public EditCache()
	{
		operations = List.nil();
		attrCache = TreeMap.empty(Ord.stringOrd);
		childrenCache = List.nil();
	}
	
	private EditCache(List<Operation> _operations,TreeMap<String,Operation> _attrCache,List<Operation> _childrenCache)
	{
		operations = _operations;
		attrCache = _attrCache;
		childrenCache = _childrenCache;
	}
	
	public EditCache setAttribute(final String _key,final ByteBuffer _value)
	{
		Operation op = new Operation(){
			@Override
			public Command getCommand(){
				return Command.PUT_ATTRIBUTE;
			}

			@Override
			public <T> T getParameter(Parameter<T> _param){
				if(_param == jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.SetAttribute.KEY){
					return _key;
				}
				return ;
			}
		};
	}
	
	public EditCache deleteAttribute(String _key)
	{
		
	}
	
	public EditCache appendChildAt(int _pos)
	{
		
	}
	
	public EditCache deleteChildAt(int _pos)
	{
		
	}
	
	public Operation getAttribute(String _key)
	{
		Option<Operation> result = attrCache.get(_key);
		if(result.isSome()){
			return result.some();
		}
		
		return null;
	}
	
	public List<Operation> operations()
	{
		return operations;
	}
	
	public List<Operation> childrenOperations()
	{
		return childrenCache;
	}
}