package com.eactive.eai.agent.command;

import java.io.Serializable;
import java.util.Map;

import lombok.Getter;
import lombok.NonNull;
import lombok.Setter;
import lombok.experimental.Accessors;
import lombok.experimental.SuperBuilder;
@SuperBuilder
@Accessors(chain = true)
public abstract class Command implements Serializable {

	private static final long serialVersionUID = 1L;

	@Getter
	@Setter
	@NonNull
	protected String name;

	@Setter
	protected Object args;

	private Map<String, String> errorCode;

	protected Command() {
		this.name = this.getClass().getName();
	}

	protected Command(String name) {
		this.name = name;
	}

	public abstract Object execute() throws CommandException;

	protected String makeException(String rspErrorCode, Throwable cause) {
		String[] msgArgs = new String[2];
		msgArgs[0] = name;
		if (cause == null) {
			msgArgs[1] = args.toString();
		} else {
			msgArgs[1] = cause.getMessage();
		}
		return makeMessage(errorCode.get(rspErrorCode), msgArgs);
	}

	private static String makeMessage(String msg, String[] args) {
		String keyword = null;
		String head = null;
		String tail = null;
		int idx = -1;
		for (int i = 0; i < args.length; i++) {
			keyword = "{" + (i + 1) + "}";
			idx = msg.indexOf(keyword);
			if (idx == -1) {
				continue;
			}
			head = msg.substring(0, idx);
			tail = msg.substring(idx + keyword.length());
			msg = head + args[i] + tail;
		}
		return msg;
	}

}