TF-EssentialsX/Essentials/src/main/java/com/earth2me/essentials/commands/Commandthunder.java

package com.earth2me.essentials.commands;

import com.earth2me.essentials.User;
import com.google.common.collect.Lists;
import org.bukkit.Server;
import org.bukkit.World;

import java.util.Collections;
import java.util.List;

import static com.earth2me.essentials.I18n.tl;

public class Commandthunder extends EssentialsCommand {
    public Commandthunder() {
        super("thunder");
    }

    @Override
    public void run(final Server server, final User user, final String commandLabel, final String[] args) throws Exception {
        if (args.length == 0) {
            throw new NotEnoughArgumentsException();
        }

        final World world = user.getWorld();
        final boolean setThunder = args[0].equalsIgnoreCase("true");
        if (args.length == 1) {
            world.setThundering(setThunder);
            user.sendMessage(tl("thunder", setThunder ? tl("enabled") : tl("disabled")));
            return;
        }

        world.setThundering(setThunder);
        world.setThunderDuration(Integer.parseInt(args[1]) * 20);
        user.sendMessage(tl("thunderDuration", setThunder ? tl("enabled") : tl("disabled"), Integer.parseInt(args[1])));
    }

    @Override
    protected List<String> getTabCompleteOptions(final Server server, final User user, final String commandLabel, final String[] args) {
        if (args.length == 1) {
            return Lists.newArrayList("true", "false");
        } else if (args.length == 2) {
            return COMMON_DATE_DIFFS;
        } else {
            return Collections.emptyList();
        }
    }
}