extras/src/main/java/pw/kaboom/extras/modules/player/PlayerChat.java

package pw.kaboom.extras.modules.player;

import java.io.File;
import java.util.UUID;

import org.bukkit.ChatColor;

import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;

import org.bukkit.entity.Player;

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;

import org.bukkit.event.player.AsyncPlayerChatEvent;

import org.bukkit.plugin.java.JavaPlugin;

import pw.kaboom.extras.Main;

public final class PlayerChat implements Listener {
    @EventHandler
    void onAsyncPlayerChat(final AsyncPlayerChatEvent event) {
        final Player player = event.getPlayer();
        final UUID playerUuid = event.getPlayer().getUniqueId();

        if (PlayerCommand.getCommandMillisList().get(playerUuid) != null) {
            final long lastCommandTime = PlayerCommand.getCommandMillisList().get(playerUuid);
            final long millisDifference = System.currentTimeMillis() - lastCommandTime;

            if (millisDifference < 50) {
                event.setCancelled(true);
            }
        }

        PlayerCommand.getCommandMillisList().put(playerUuid, System.currentTimeMillis());

        if (event.isCancelled()) {
            return;
        }

        final File configFile = new File(JavaPlugin.getPlugin(Main.class).getDataFolder(),
                                         "prefixes.yml");
        final FileConfiguration prefixConfig = YamlConfiguration.loadConfiguration(configFile);
        final String prefix;
        final String name = player.getDisplayName().toString();

        if (prefixConfig.getString(player.getUniqueId().toString()) != null) {
            prefix = ChatColor.translateAlternateColorCodes(
                '&',
                prefixConfig.getString(player.getUniqueId().toString()) +  " " + ChatColor.RESET
            );
        } else if (event.getPlayer().isOp()) {
            prefix = JavaPlugin.getPlugin(Main.class).getConfig().getString("opTag");
        } else {
            prefix = JavaPlugin.getPlugin(Main.class).getConfig().getString("deOpTag");
        }

        event.setFormat(prefix + name + ChatColor.RESET + ": " + ChatColor.RESET + "%2$s");
        event.setMessage(
            ChatColor.translateAlternateColorCodes('&', event.getMessage())
        );
    }
}