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

import jp.ac.u_ryukyu.ie.cr.jungle.transaction.node.TreeNode;
import jp.ac.u_ryukyu.ie.cr.jungle.store.logger.LoggingNode;
import jp.ac.u_ryukyu.ie.cr.jungle.store.logger.OperationLog;
import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.jungle.util.jungleError.Error;

public class AppendChildAt implements NodeEditor {
    private final int pos;

    public AppendChildAt(int _pos) {
        pos = _pos;
    }

    public Either<Error, LoggingNode> _edit(LoggingNode _e) {
        Either<Error, LoggingNode> either = _e.getChildren().addNewChildAt(pos);
        if (either.isA()) {
            // error
            return either;
        }
        return DefaultEither.newB(either.b());
    }

    @Override
    public Either<Error, LoggingNode> edit(TreeNode _e) {
        LoggingNode logNode = wrap(_e);
        return _edit(logNode);
    }

    @Override
    public LoggingNode wrap(TreeNode newRoot, TreeNode editedNode, OperationLog operationLog) {
        return new LoggingNode(newRoot,editedNode, operationLog);
    }

    public LoggingNode wrap(TreeNode node) {
        return new LoggingNode(node);
    }

}