add more debug information to the injection handler

src/main/java/io/github/znetworkw/znpcservers/commands/Command.java

@@ -1,9 +1,9 @@
 package io.github.znetworkw.znpcservers.commands;
 
 import com.google.common.collect.Iterables;
-import io.github.znetworkw.znpcservers.commands.exception.CommandException;
-import io.github.znetworkw.znpcservers.commands.exception.CommandExecuteException;
-import io.github.znetworkw.znpcservers.commands.exception.CommandPermissionException;
+import io.github.znetworkw.znpcservers.exception.CommandException;
+import io.github.znetworkw.znpcservers.exception.CommandExecuteException;
+import io.github.znetworkw.znpcservers.exception.CommandPermissionException;
 import io.github.znetworkw.znpcservers.reflection.Reflections;
 import org.bukkit.ChatColor;
 import org.bukkit.command.CommandSender;

src/main/java/io/github/znetworkw/znpcservers/commands/CommandInvoker.java

@@ -1,8 +1,8 @@
 package io.github.znetworkw.znpcservers.commands;
 
-import io.github.znetworkw.znpcservers.commands.exception.CommandException;
-import io.github.znetworkw.znpcservers.commands.exception.CommandExecuteException;
-import io.github.znetworkw.znpcservers.commands.exception.CommandPermissionException;
+import io.github.znetworkw.znpcservers.exception.CommandException;
+import io.github.znetworkw.znpcservers.exception.CommandExecuteException;
+import io.github.znetworkw.znpcservers.exception.CommandPermissionException;
 import org.bukkit.entity.Player;
 
 import java.lang.reflect.Method;

src/main/java/io/github/znetworkw/znpcservers/exception/ChannelRegistrationException.java

@@ -0,0 +1,23 @@
+package io.github.znetworkw.znpcservers.exception;
+
+import com.google.common.collect.ImmutableList;
+
+import java.util.List;
+
+public class ChannelRegistrationException extends Throwable {
+    private final Throwable throwable;
+    private final List<String> channelNames;
+
+    public ChannelRegistrationException(Throwable t, List<String> channelNames) {
+        this.throwable = t;
+        this.channelNames = new ImmutableList.Builder<String>().addAll(channelNames).build();
+    }
+
+    public Throwable getThrowable() {
+        return throwable;
+    }
+
+    public List<String> getChannelNames() {
+        return channelNames;
+    }
+}

src/main/java/io/github/znetworkw/znpcservers/exception/CommandException.java

@@ -1,4 +1,4 @@
-package io.github.znetworkw.znpcservers.commands.exception;
+package io.github.znetworkw.znpcservers.exception;
 
 import java.io.Serial;
 

src/main/java/io/github/znetworkw/znpcservers/exception/CommandExecuteException.java

@@ -1,4 +1,4 @@
-package io.github.znetworkw.znpcservers.commands.exception;
+package io.github.znetworkw.znpcservers.exception;
 
 public class CommandExecuteException extends CommandException {
     public CommandExecuteException(String message, Throwable cause) {

src/main/java/io/github/znetworkw/znpcservers/exception/CommandPermissionException.java

@@ -1,4 +1,4 @@
-package io.github.znetworkw.znpcservers.commands.exception;
+package io.github.znetworkw.znpcservers.exception;
 
 public class CommandPermissionException extends CommandException {
     public CommandPermissionException(String message) {

src/main/java/io/github/znetworkw/znpcservers/user/ZUser.java

@@ -1,6 +1,7 @@
 package io.github.znetworkw.znpcservers.user;
 
 import com.mojang.authlib.GameProfile;
+import io.github.znetworkw.znpcservers.exception.ChannelRegistrationException;
 import io.github.znetworkw.znpcservers.npc.NPC;
 import io.github.znetworkw.znpcservers.npc.NPCAction;
 import io.github.znetworkw.znpcservers.npc.event.ClickType;
@@ -59,7 +60,7 @@ public class ZUser {
 
         @Override
         public void run() {
-            Exception ex = user.tryRegisterChannel();
+            ChannelRegistrationException ex = user.tryRegisterChannel();
             Player player = user.toPlayer();
             if (player == null) {
                 tries--;
@@ -75,20 +76,22 @@ public class ZUser {
                     ChatColor.WHITE + "Couldn't inject interaction detector to channel\n" +
                     ChatColor.WHITE + "Please report this at https://github.com/Pyrbu/ZNPCsPlus");
             ZNPCsPlus.LOGGER.severe("Couldn't inject interaction detector to channel for player " + player.getName() + " (" + player.getUniqueId() + ")");
+            ZNPCsPlus.LOGGER.severe("Channel names: " + ex.getChannelNames());
             ex.printStackTrace();
         }
     }
 
-    private Exception tryRegisterChannel() {
+    private ChannelRegistrationException tryRegisterChannel() {
+        Channel channel = null;
         try {
-            Channel channel = (Channel) Reflections.CHANNEL_FIELD.get().get(Reflections.NETWORK_MANAGER_FIELD.get().get(this.playerConnection));
+            channel = (Channel) Reflections.CHANNEL_FIELD.get().get(Reflections.NETWORK_MANAGER_FIELD.get().get(this.playerConnection));
             if (channel.pipeline().names().contains("npc_interact")) channel.pipeline().remove("npc_interact");
             channel.pipeline().addAfter("decoder", "npc_interact", new ZNPCSocketDecoder());
             return null;
         } catch (IllegalAccessException e) {
             throw new RuntimeException("illegal access exception while trying to register npc_interact channel");
         } catch (NoSuchElementException e) {
-            return e;
+            return new ChannelRegistrationException(e, channel == null ? List.of() : channel.pipeline().names());
         }
     }