MultiKillListener

package me.rabrg.combatcounter.listener;

import me.rabrg.combatcounter.CombatCounter;

import org.bukkit.ChatColor;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDeathEvent;
import org.bukkit.metadata.FixedMetadataValue;

public final class MultiKillListener implements Listener {

    private final CombatCounter combatCounter;

    public MultiKillListener(final CombatCounter combatCounter) {
        this.combatCounter = combatCounter;
    }

    @EventHandler(priority = EventPriority.MONITOR)
    public void onEntityDeathEvent(final EntityDeathEvent event) {
        if (event.getEntityType() == EntityType.PLAYER) {
            final Player killer = event.getEntity().getKiller();
            if (killer != null) {
                if (killer.hasMetadata("multi-kill.time") && System.currentTimeMillis() - killer.getMetadata("multi-kill.time").get(0).asLong() < 3000) { // TODO: config
                    final int count = killer.getMetadata("multi-kill.count").get(0).asInt() + 1;
                    killer.setMetadata("multi-kill.count", new FixedMetadataValue(combatCounter, count));
                    combatCounter.getServer().broadcastMessage(getMessage(killer.getName(), count));
                } else {
                    killer.setMetadata("multi-kill.count", new FixedMetadataValue(combatCounter, 1));
                }
                killer.setMetadata("multi-kill.time", new FixedMetadataValue(combatCounter, System.currentTimeMillis()));
            }
        }
    }

    private String getMessage(final String name, final int count) {
        final StringBuffer message = new StringBuffer().append(ChatColor.RED + name + ChatColor.WHITE + " has gotten a " + ChatColor.LIGHT_PURPLE); // TODO: config
        switch (count) {
        case 2:
            message.append("double kill");
            break;
        case 3:
            message.append("multi kill");
            break;
        case 4:
            message.append("mega kill");
            break;
        case 5:
            message.append("ultra kill");
            break;
        case 6:
            message.append("monster kill");
            break;
        case 7:
            message.append("ludicrous kill");
            break;
        default:
            message.append("HOLY SH**T");
            break;
        }
        return message.append(ChatColor.WHITE + "!").toString();
    }
}