juick-commands/src/main/java/com/juick/command/Ping.java


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package com.juick.command;

import com.juick.User;
import com.juick.server.protocol.ProtocolListener;
import org.springframework.stereotype.Component;

import java.util.regex.Pattern;

/**
 * @author ma1uta
 */
@Component
public class Ping implements Command {

    private static final Pattern PATTERN = Pattern.compile("^ping$", Pattern.CASE_INSENSITIVE);

    @Override
    public Pattern pattern() {
        return PATTERN;
    }

    @Override
    public String help() {
        return "PING - returns you a PONG";
    }

    @Override
    public String execute(User sender, ProtocolListener protocolListener, String command) {
        return "PONG";
    }
}