package jungle.test.core.practice;

import java.io.IOException;
import java.nio.ByteBuffer;

import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.Jungle;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTree;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.JungleTreeEditor;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.NodePath;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.DefaultTreeOperationLog;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.impl.logger.TreeOperationLog;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.TreeOperation;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
import jungle.test.codesegment.operation.JungleManager;
import jungle.test.datasegment.store.operations.DefaultTreeOperationLogContainer;
import alice.codesegment.CodeSegment;
import alice.datasegment.CommandType;
import alice.datasegment.Receiver;

public class LogReadCodeSegment extends CodeSegment {
	
	Receiver arg1 = ids.create(CommandType.TAKE);
	
	public LogReadCodeSegment() {
		arg1.setKey("log");
	}

	public void run() {
		System.out.println("--LogReadCodeSegment--");
		
		DefaultTreeOperationLogContainer container = arg1.asClass(DefaultTreeOperationLogContainer.class);
		DefaultTreeOperationLog log = null;
		try {
			log = container.convert();
		} catch (IOException e) {
			e.printStackTrace();
		}
		Jungle jungle = new JungleManager().getJungle();
		JungleTree tree = jungle.getTreeByName("tree");
		JungleTreeEditor editor = tree.getTreeEditor();
		Either<Error, JungleTreeEditor> either = edit(editor, log);
		if (either.isA()) {
			throw new IllegalStateException();				
		}
		editor = either.b();
		editor.success();
		new PrintChildrenAttribute("key1");
		ods.update("key1", "key1");
	}
	
	private Either<Error, JungleTreeEditor> edit(JungleTreeEditor _editor ,TreeOperationLog _log) {
		JungleTreeEditor editor = _editor;
		Either<Error, JungleTreeEditor> either = null;
		for (TreeOperation op : _log) { 
			either = _edit(editor, op);
			if(either.isA()) {
				return either;
			}
			editor = either.b();
		}
		return either;
	}
	
	private Either<Error, JungleTreeEditor> _edit(JungleTreeEditor editor,
			TreeOperation op) {
		NodePath path = op.getNodePath();
		NodeOperation nodeOp = op.getNodeOperation();
		Command c = nodeOp.getCommand();
		String str = "";
		String key = "";
		switch (c) {
		case PUT_ATTRIBUTE:
			key = nodeOp.getKey();
			ByteBuffer value = nodeOp.getValue();
			if (value.limit() < 100) {
				str = String.format("key:%s,value:%s", key,
						new String(value.array()));
			} else {
				str = String.format("key:%s,value:%d", key, value.limit());
			}
			return editor.putAttribute(path, key, value);
		case DELETE_ATTRIBUTE:
			key = nodeOp.getKey();
			str = String.format("key:%s", nodeOp.getKey());
			return editor.deleteAttribute(path, key);
		case APPEND_CHILD:
			str = String.format("pos:%d", nodeOp.getPosition());
			return editor.addNewChildAt(path, 0);
		case DELETE_CHILD:
			str = String.format("pos:%d", nodeOp.getPosition());
			return editor.deleteChildAt(path, 0);
		}
		return null;
	}
}