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

package pw.kaboom.extras;

import java.io.InputStreamReader;
import java.net.URL;
import java.util.UUID;

import javax.net.ssl.HttpsURLConnection;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Chunk;
import org.bukkit.World;

import org.bukkit.block.banner.Pattern;

import org.bukkit.entity.Player;

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

import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerKickEvent;
import org.bukkit.event.player.PlayerLoginEvent;
import org.bukkit.event.player.PlayerLoginEvent.Result;

import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.BannerMeta;

import org.bukkit.plugin.java.JavaPlugin;

import org.bukkit.scheduler.BukkitRunnable;

import com.destroystokyo.paper.event.player.PlayerConnectionCloseEvent;

import com.destroystokyo.paper.profile.PlayerProfile;
import com.destroystokyo.paper.profile.ProfileProperty;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

class PlayerConnection implements Listener {
	@EventHandler
	void onAsyncPlayerPreLogin(AsyncPlayerPreLoginEvent event) {
		if (event.getName().length() > 16) {
			event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "Your username can't be longer than 16 characters");
			return;
		}

		/*for (final World world : Bukkit.getWorlds()) {
			for (final Chunk chunk : world.getLoadedChunks()) {
				try {
					chunk.getTileEntities(false);
				} catch (Exception exception) {
					new BukkitRunnable() {
						public void run() {
							world.regenerateChunk(chunk.getX(), chunk.getZ());
						}
					}.runTask(main);
				}
			}
		}*/
	}

	@EventHandler
	void onPlayerConnectionClose(final PlayerConnectionCloseEvent event) {
		Main.commandMillisList.remove(event.getPlayerUniqueId());
		Main.interactMillisList.remove(event.getPlayerUniqueId());
	}

	@EventHandler
	void onPlayerJoin(PlayerJoinEvent event) {
		final Player player = event.getPlayer();
		final int fadeIn = 10;
		final int stay = 160;
		final int fadeOut = 5;

		if (player.hasPlayedBefore()) {
			try {
				for (ItemStack item : player.getInventory().getContents()) {
					if (item != null &&
						item.hasItemMeta()) {
						if (item.getItemMeta() instanceof BannerMeta) {
							final BannerMeta banner = (BannerMeta) item.getItemMeta();
	
							for (Pattern pattern : banner.getPatterns()) {
								if (pattern.getColor() == null) {
									player.getInventory().clear();
								}
							}
						}
					}
				}
			} catch (Exception exception) {
				player.getInventory().clear();
			}
		}

		player.sendTitle(
			ChatColor.GRAY + "Welcome to Kaboom!",
			"Free OP • Anarchy • Creative",
			fadeIn,
			stay,
			fadeOut
		);
	}

	@EventHandler
	void onPlayerKick(PlayerKickEvent event) {
		event.setCancelled(true);
	}

	@EventHandler
	void onPlayerLogin(PlayerLoginEvent event) {
		if (event.getHostname().startsWith("play.flame.ga") &&
			event.getHostname().endsWith(":53950")) {
			event.disallow(Result.KICK_OTHER, "You connected to the server using an outdated server address/IP.\nPlease use the following address/IP:\n\nkaboom.pw");
			return;
		}

		final Player player = event.getPlayer();

		event.allow();
		player.setOp(true);

		new BukkitRunnable() {
			public void run() {
				try {
					final URL skinUrl = new URL("https://api.ashcon.app/mojang/v2/user/" + player.getName());
					final HttpsURLConnection skinConnection = (HttpsURLConnection) skinUrl.openConnection();
					skinConnection.setConnectTimeout(0);
					skinConnection.setDefaultUseCaches(false);
					skinConnection.setUseCaches(false);

					if (skinConnection.getResponseCode() == HttpsURLConnection.HTTP_OK) {
						final InputStreamReader skinStream = new InputStreamReader(skinConnection.getInputStream());
						final JsonObject response = new JsonParser().parse(skinStream).getAsJsonObject();
						final JsonObject rawSkin = response.getAsJsonObject("textures").getAsJsonObject("raw");
						final String texture = rawSkin.get("value").getAsString();
						final String signature = rawSkin.get("signature").getAsString();
						skinStream.close();

						final PlayerProfile textureProfile = player.getPlayerProfile();
						textureProfile.setProperty(new ProfileProperty("textures", texture, signature));

						new BukkitRunnable() {
							public void run() {
								player.setPlayerProfile(textureProfile);
							}
						}.runTask(JavaPlugin.getPlugin(Main.class));
					}

					skinConnection.disconnect();
				} catch (Exception exception) {
				}
			}
		}.runTaskAsynchronously(JavaPlugin.getPlugin(Main.class));
	}
}