Add ability to enable mineskin debug

src/main/java/me/libraryaddict/disguise/commands/LibsDisguisesCommand.java

@@ -35,6 +35,7 @@ public class LibsDisguisesCommand implements CommandExecutor, TabCompleter {
         getCommands().add(new LDDebugPlayer());
         getCommands().add(new LDUploadLogs());
         getCommands().add(new LDUpdateProtocolLib());
+        getCommands().add(new LDDebugMineSkin());
     }
 
     protected ArrayList<String> filterTabs(ArrayList<String> list, String[] origArgs) {

src/main/java/me/libraryaddict/disguise/commands/libsdisguises/LDDebugMineSkin.java

@@ -0,0 +1,42 @@
+package me.libraryaddict.disguise.commands.libsdisguises;
+
+import me.libraryaddict.disguise.utilities.DisguiseUtilities;
+import me.libraryaddict.disguise.utilities.mineskin.MineSkinAPI;
+import me.libraryaddict.disguise.utilities.translations.LibsMsg;
+import org.bukkit.command.CommandSender;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Created by libraryaddict on 22/05/2021.
+ */
+public class LDDebugMineSkin implements LDCommand {
+    @Override
+    public List<String> getTabComplete() {
+        return Collections.singletonList("mineskin");
+    }
+
+    @Override
+    public boolean hasPermission(CommandSender sender) {
+        return sender.hasPermission(getPermission());
+    }
+
+    @Override
+    public String getPermission() {
+        return "libsdisguises.mineskin";
+    }
+
+    @Override
+    public void onCommand(CommandSender sender, String[] args) {
+        MineSkinAPI api = DisguiseUtilities.getMineSkinAPI();
+        api.setDebugging(!api.isDebugging());
+
+        LibsMsg.LD_DEBUG_MINESKIN_TOGGLE.send(sender, api.isDebugging());
+    }
+
+    @Override
+    public LibsMsg getHelp() {
+        return LibsMsg.LD_DEBUG_MINESKIN;
+    }
+}

src/main/java/me/libraryaddict/disguise/utilities/mineskin/MineSkinAPI.java

@@ -1,6 +1,8 @@
 package me.libraryaddict.disguise.utilities.mineskin;
 
 import com.google.gson.Gson;
+import lombok.Getter;
+import lombok.Setter;
 import me.libraryaddict.disguise.utilities.DisguiseUtilities;
 import me.libraryaddict.disguise.utilities.SkinUtils;
 import me.libraryaddict.disguise.utilities.translations.LibsMsg;
@@ -32,6 +34,9 @@ public class MineSkinAPI {
      */
     private long nextRequest;
     private final ReentrantLock lock = new ReentrantLock();
+    @Getter
+    @Setter
+    private boolean debugging;
 
     public boolean isInUse() {
         return lock.isLocked();
@@ -56,12 +61,28 @@ public class MineSkinAPI {
         return doPost(callback, "/generate/url", url, null, modelType);
     }
 
+    private void printDebug(String message) {
+        if (!isDebugging()) {
+            return;
+        }
+
+        System.out.println("[MineSkinAPI] " + message);
+    }
+
     private MineSkinResponse doPost(SkinUtils.SkinCallback callback, String path, String skinUrl, File file, SkinUtils.ModelType modelType) {
         lock.lock();
 
         long sleep = nextRequest - System.currentTimeMillis();
 
+        if (file != null) {
+            printDebug("Grabbing a skin from file at " + file.getPath());
+        } else if (skinUrl != null) {
+            printDebug("Grabbing a skin from url '" + skinUrl + "'");
+        }
+
         if (sleep > 0) {
+            printDebug("Sleeping for " + sleep + "ms before calling the API due to a recent request");
+
             try {
                 Thread.sleep(sleep);
             } catch (InterruptedException e) {
@@ -121,9 +142,15 @@ public class MineSkinAPI {
                 writer.append("--").append(boundary).append("--").append(CRLF).flush();
             }
 
+            printDebug("Received status code: " + connection.getResponseCode());
+
             if (connection.getResponseCode() == 500) {
-                APIError error = new Gson().fromJson(new BufferedReader(new InputStreamReader(connection.getErrorStream(), StandardCharsets.UTF_8)).lines()
-                        .collect(Collectors.joining("\n")), APIError.class);
+                String errorMessage = new BufferedReader(new InputStreamReader(connection.getErrorStream(), StandardCharsets.UTF_8)).lines()
+                        .collect(Collectors.joining("\n"));
+
+                APIError error = new Gson().fromJson(errorMessage, APIError.class);
+
+                printDebug("Received error: " + errorMessage);
 
                 if (error.code == 403) {
                     callback.onError(LibsMsg.SKIN_API_FAIL_CODE, "" + error.code, LibsMsg.SKIN_API_403.get());
@@ -156,6 +183,8 @@ public class MineSkinAPI {
                 // Read it to string
                 String response = new BufferedReader(new InputStreamReader(input, StandardCharsets.UTF_8)).lines().collect(Collectors.joining("\n"));
 
+                printDebug("Received: " + response);
+
                 MineSkinResponse skinResponse = new Gson().fromJson(response, MineSkinResponse.class);
 
                 nextRequestIn = (long) (skinResponse.getNextRequest() * 1000);
@@ -163,6 +192,10 @@ public class MineSkinAPI {
                 return skinResponse;
             }
         } catch (SocketTimeoutException ex) {
+            if (isDebugging()) {
+                ex.printStackTrace();
+            }
+
             callback.onError(skinUrl == null ? LibsMsg.SKIN_API_TIMEOUT_ERROR : LibsMsg.SKIN_API_IMAGE_TIMEOUT);
             return null;
         } catch (Exception ex) {
@@ -172,10 +205,13 @@ public class MineSkinAPI {
                     callback.onError(LibsMsg.SKIN_API_TIMEOUT_ERROR);
                     return null;
                 }
-            } catch (IOException e) {
+            } catch (IOException ignored) {
+            }
+
+            if (DisguiseUtilities.getLogger() != null) {
+                DisguiseUtilities.getLogger().warning("Failed to access MineSkin.org");
             }
 
-            DisguiseUtilities.getLogger().warning("Failed to access MineSkin.org");
             ex.printStackTrace();
 
             callback.onError(LibsMsg.SKIN_API_FAIL);
@@ -231,7 +267,9 @@ public class MineSkinAPI {
                 throw new IllegalArgumentException();
             }
 
-            DisguiseUtilities.getLogger().warning("Failed to access MineSkin.org");
+            if (DisguiseUtilities.getLogger() != null) {
+                DisguiseUtilities.getLogger().warning("Failed to access MineSkin.org");
+            }
             ex.printStackTrace();
         } finally {
             nextRequest = System.currentTimeMillis() + nextRequestIn + 1000;

src/main/java/me/libraryaddict/disguise/utilities/translations/LibsMsg.java

@@ -337,6 +337,8 @@ public enum LibsMsg {
             " release build update and 'update!' will download that update!"),
     LD_COMMAND_CHANGELOG(ChatColor.BLUE + "/libsdisguises changelog - " + ChatColor.AQUA +
             "Gives you the changelog of the current update fetched"),
+    LD_DEBUG_MINESKIN(ChatColor.BLUE + "/libsdisguises mineskin - " + ChatColor.AQUA + "Prints debug information about MineSkin to console"),
+    LD_DEBUG_MINESKIN_TOGGLE(ChatColor.BLUE + "MineSkin debug is now %s, this command toggles the printing of MineSkin information to console"),
     LD_COMMAND_JSON(ChatColor.BLUE + "/libsdisguises json - " + ChatColor.AQUA +
             "Turns the current held item into a string format"),
     LD_COMMAND_MODS(ChatColor.BLUE + "/libsdisguises mods <Player?> - " + ChatColor.AQUA +