Add /grabhead and use local skins if possible with skinapi

src/main/java/me/libraryaddict/disguise/commands/utils/GrabHeadCommand.java

@@ -0,0 +1,129 @@
+package me.libraryaddict.disguise.commands.utils;
+
+import com.comphenix.protocol.wrappers.WrappedGameProfile;
+import me.libraryaddict.disguise.DisguiseAPI;
+import me.libraryaddict.disguise.LibsDisguises;
+import me.libraryaddict.disguise.utilities.DisguiseUtilities;
+import me.libraryaddict.disguise.utilities.LibsPremium;
+import me.libraryaddict.disguise.utilities.SkinUtils;
+import me.libraryaddict.disguise.utilities.reflection.NmsVersion;
+import me.libraryaddict.disguise.utilities.reflection.ReflectionManager;
+import me.libraryaddict.disguise.utilities.translations.LibsMsg;
+import net.md_5.bungee.api.chat.ClickEvent;
+import net.md_5.bungee.api.chat.ComponentBuilder;
+import net.md_5.bungee.api.chat.HoverEvent;
+import org.apache.commons.lang.StringUtils;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.SkullMeta;
+import org.bukkit.scheduler.BukkitRunnable;
+import org.bukkit.scheduler.BukkitTask;
+
+import java.lang.reflect.Field;
+
+/**
+ * Created by libraryaddict on 20/06/2020.
+ */
+public class GrabHeadCommand implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String s, String[] strings) {
+        if (sender instanceof Player && !sender.isOp() &&
+                (!LibsPremium.isPremium() || LibsPremium.getPaidInformation() == LibsPremium.getPluginInformation())) {
+            sender.sendMessage(ChatColor.RED + "Please purchase Lib's Disguises to enable player commands");
+            return true;
+        }
+
+        if (!sender.hasPermission("libsdisguises.grabhead")) {
+            sender.sendMessage(LibsMsg.NO_PERM.get());
+            return true;
+        }
+
+        if (!(sender instanceof Player)) {
+            sender.sendMessage(LibsMsg.NO_CONSOLE.get());
+            return true;
+        }
+
+        if (strings.length == 0) {
+            sendHelp(sender);
+            return true;
+        }
+
+        String[] args = DisguiseUtilities.split(StringUtils.join(strings, " "));
+        String skin = args[0];
+
+        String usable = SkinUtils.getUsableStatus();
+
+        if (usable != null) {
+            sender.sendMessage(usable);
+            return true;
+        }
+
+        SkinUtils.SkinCallback callback = new SkinUtils.SkinCallback() {
+            private BukkitTask runnable = new BukkitRunnable() {
+                @Override
+                public void run() {
+                    sender.sendMessage(LibsMsg.PLEASE_WAIT.get());
+                }
+            }.runTaskTimer(LibsDisguises.getInstance(), 100, 100);
+
+            @Override
+            public void onError(LibsMsg msg, Object... args) {
+                sender.sendMessage(msg.get(args));
+
+                runnable.cancel();
+            }
+
+            @Override
+            public void onInfo(LibsMsg msg, Object... args) {
+                sender.sendMessage(msg.get(args));
+            }
+
+            @Override
+            public void onSuccess(WrappedGameProfile profile) {
+                runnable.cancel();
+
+                DisguiseUtilities.setGrabHeadCommandUsed();
+
+                new BukkitRunnable() {
+                    @Override
+                    public void run() {
+                        ItemStack skull = new ItemStack(Material.PLAYER_HEAD);
+                        SkullMeta meta = (SkullMeta) skull.getItemMeta();
+
+                        try {
+                            Field field = meta.getClass().getDeclaredField("profile");
+                            field.setAccessible(true);
+                            field.set(meta, profile.getHandle());
+                        }
+                        catch (NoSuchFieldException | IllegalAccessException e) {
+                            e.printStackTrace();
+                        }
+
+                        skull.setItemMeta(meta);
+
+                        ((Player) sender).getInventory().addItem(skull);
+                        sender.sendMessage(LibsMsg.GRAB_HEAD_SUCCESS.get());
+                    }
+                }.runTask(LibsDisguises.getInstance());
+            }
+        };
+
+        SkinUtils.grabSkin(skin, callback);
+
+        return true;
+    }
+
+    private void sendHelp(CommandSender sender) {
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_1.get());
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_2.get());
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_3.get());
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_4.get());
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_5.get());
+        sender.sendMessage(LibsMsg.GRAB_DISG_HELP_6.get());
+    }
+}