Correct more really awkward code formatting decisions (I blame Mumfrey)

src/hdskins/java/com/voxelmodpack/hdskins/HDSkinManager.java

@@ -11,14 +11,11 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.common.util.concurrent.MoreExecutors;
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
 import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.minecraft.MinecraftProfileTexture;
 import com.mojang.authlib.minecraft.MinecraftProfileTexture.Type;
 import com.mojang.authlib.properties.Property;
 import com.mojang.authlib.yggdrasil.response.MinecraftTexturesPayload;
-import com.mojang.util.UUIDTypeAdapter;
 import com.mumfrey.liteloader.core.LiteLoader;
 import com.mumfrey.liteloader.util.log.LiteLoaderLogger;
 import com.voxelmodpack.hdskins.gui.GuiSkins;
@@ -32,7 +29,6 @@ import com.voxelmodpack.hdskins.util.AsyncCacheLoader;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.IImageBuffer;
-import net.minecraft.client.renderer.texture.ITextureObject;
 import net.minecraft.client.renderer.texture.TextureManager;
 import net.minecraft.client.resources.DefaultPlayerSkin;
 import net.minecraft.client.resources.IResourceManager;
@@ -61,12 +57,9 @@ import java.util.stream.Collectors;
 
 import javax.annotation.Nonnull;
 
-public final class HDSkinManager implements IResourceManagerReloadListener {
+public final class HDSkinManager implements IResourceManagerReloadListener, ISkinModifier {
 
     private static final ResourceLocation LOADING = new ResourceLocation("LOADING");
-    private static final Gson GSON = new GsonBuilder()
-            .registerTypeAdapter(UUID.class, new UUIDTypeAdapter())
-            .create();
 
     private static final ExecutorService skinDownloadExecutor = Executors.newFixedThreadPool(8);
     public static final ListeningExecutorService skinUploadExecutor = MoreExecutors.listeningDecorator(Executors.newSingleThreadExecutor());
@@ -92,12 +85,18 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
     private List<ISkinModifier> skinModifiers = Lists.newArrayList();
 
     private SkinResourceManager resources = new SkinResourceManager();
-    //    private ExecutorService executor = Executors.newCachedThreadPool();
 
     private Class<? extends GuiSkins> skinsClass = null;
 
-    private HDSkinManager() {
+    public static void clearSkinCache() {
+        INSTANCE.clearSKinCache();
+    }
 
+    public static PreviewTextureManager getPreviewTextureManager(GameProfile profile) {
+        return new PreviewTextureManager(INSTANCE.getGatewayServer().getPreviewTextures(profile));
+    }
+
+    private HDSkinManager() {
         // register default skin server types
         addSkinServerType(LegacySkinServer.class);
         addSkinServerType(ValhallaSkinServer.class);
@@ -135,7 +134,7 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
         Property textures = Iterables.getFirst(profile1.getProperties().get("textures"), null);
         if (textures != null) {
             String json = new String(Base64.getDecoder().decode(textures.getValue()), StandardCharsets.UTF_8);
-            MinecraftTexturesPayload texturePayload = GSON.fromJson(json, MinecraftTexturesPayload.class);
+            MinecraftTexturesPayload texturePayload = SkinServer.gson.fromJson(json, MinecraftTexturesPayload.class);
             if (texturePayload != null) {
                 // name is optional
                 String name = texturePayload.getProfileName();
@@ -177,75 +176,77 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
         return url + (url.indexOf('?') > -1 ? '&' : '?') + Long.toString(new Date().getTime() / 1000);
     }
 
-    private void loadTexture(GameProfile profile, final Type type, final SkinAvailableCallback callback) {
+    private void loadTexture(GameProfile profile, Type type, SkinAvailableCallback callback) {
-        if (profile.getId() != null) {
+        if (profile.getId() == null) {
-            Map<Type, MinecraftProfileTexture> data = getProfileData(profile);
+            return;
-            final MinecraftProfileTexture texture = data.get(type);
+        }
+
+        MinecraftProfileTexture texture = getProfileData(profile).get(type);
 
         String skinDir = type.toString().toLowerCase() + "s/";
-            final ResourceLocation skin = new ResourceLocation("hdskins", skinDir + texture.getHash());
-            File file2 = new File(LiteLoader.getAssetsDirectory(), "hd/" + skinDir + texture.getHash().substring(0, 2) + "/" + texture.getHash());
 
-            final IImageBuffer imagebufferdownload = type == Type.SKIN ? new ImageBufferDownloadHD() : null;
+        ResourceLocation skin = new ResourceLocation("hdskins", skinDir + texture.getHash());
 
-            ITextureObject texObject = new ThreadDownloadImageETag(file2, bustCache(texture.getUrl()),
+        File etag = new File(LiteLoader.getAssetsDirectory(), "hd/" + skinDir + texture.getHash().substring(0, 2) + "/" + texture.getHash());
-                    DefaultPlayerSkin.getDefaultSkinLegacy(),
+
-                    new IImageBuffer() {
+        IImageBuffer buffer = new ImageBufferDownloadHD() {
             @Nonnull
             @Override
             public BufferedImage parseUserSkin(@Nonnull BufferedImage image) {
-                            BufferedImage image1 = image;
+                if (type != Type.SKIN) {
-                            if (imagebufferdownload != null) {
+                    return image;
-                                image1 = imagebufferdownload.parseUserSkin(image);
-                            }
-                            return image1 == null ? image : image1;
                 }
 
-                        @Override
+                BufferedImage converted = super.parseUserSkin(image);
-                        public void skinAvailable() {
+
-                            if (imagebufferdownload != null) {
+                return converted == null ? image : converted;
-                                imagebufferdownload.skinAvailable();
             }
-                            callback.skinAvailable(type, skin, texture);
+        }.withCallback(() -> callback.skinAvailable(type, skin, texture));
-                        }
-                    });
 
         // schedule texture loading on the main thread.
-            TextureLoader.loadTexture(skin, texObject);
+        TextureLoader.loadTexture(skin, new ThreadDownloadImageETag(etag, bustCache(texture.getUrl()), DefaultPlayerSkin.getDefaultSkinLegacy(), buffer));
-        }
     }
 
     private Map<Type, MinecraftProfileTexture> loadProfileData(GameProfile profile) {
         Map<Type, MinecraftProfileTexture> textures = Maps.newEnumMap(Type.class);
         for (SkinServer server : skinServers) {
             Optional<MinecraftTexturesPayload> profileData = server.loadProfileData(profile);
-            profileData.map(MinecraftTexturesPayload::getTextures).ifPresent(it -> it.forEach(textures::putIfAbsent));
+
+            if (profileData.isPresent()) {
+                profileData.get().getTextures().forEach(textures::putIfAbsent);
+            }
+
             if (textures.size() == Type.values().length) {
-                break;
+                return textures;
             }
 
         }
+
         return textures;
     }
 
     public Map<Type, MinecraftProfileTexture> getProfileData(GameProfile profile) {
         boolean was = !skins.asMap().containsKey(profile);
+
         Map<Type, MinecraftProfileTexture> textures = skins.getUnchecked(profile);
+
         // This is the initial value. Refreshing will load it asynchronously.
         if (was) {
             skins.refresh(profile);
         }
+
         return textures;
     }
 
     public void addSkinServerType(Class<? extends SkinServer> type) {
         Preconditions.checkArgument(!type.isInterface(), "type cannot be an interface");
         Preconditions.checkArgument(!Modifier.isAbstract(type.getModifiers()), "type cannot be abstract");
+
         ServerType st = type.getAnnotation(ServerType.class);
-        if (st == null) {
+
-            throw new IllegalArgumentException("class is not annotated with @ServerType");
+        Preconditions.checkArgument(st != null, "class is not annotated with @ServerType");
-        }
+
-        this.skinServerTypes.put(st.value(), type);
+        skinServerTypes.put(st.value(), type);
     }
 
     public Class<? extends SkinServer> getSkinServerClass(String type) {
@@ -265,15 +266,11 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
         this.enabled = enabled;
     }
 
-    public static PreviewTextureManager getPreviewTextureManager(GameProfile profile) {
-        return new PreviewTextureManager(INSTANCE.getGatewayServer().getPreviewTextures(profile));
-    }
-
     public void addClearListener(ISkinCacheClearListener listener) {
         clearListeners.add(listener);
     }
 
-    public static void clearSkinCache() {
+    private void clearSKinCache() {
         LiteLoaderLogger.info("Clearing local player skin cache");
 
         try {
@@ -282,20 +279,17 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
 
             TextureManager textures = Minecraft.getMinecraft().getTextureManager();
 
-            INSTANCE.skinCache.values().stream().flatMap(m -> m.values().stream())
+            skinCache.values().stream().flatMap(m -> m.values().stream()).forEach(textures::deleteTexture);
-                    .forEach(textures::deleteTexture);
+            skinCache.clear();
-            INSTANCE.skinCache.clear();
+            skins.invalidateAll();
-            INSTANCE.skins.invalidateAll();
         } catch (IOException var1) {
             var1.printStackTrace();
         }
 
-        INSTANCE.clearListeners = INSTANCE.clearListeners.stream()
+        clearListeners = clearListeners.stream().filter(this::onSkinCacheCleared).collect(Collectors.toList());
-                .filter(HDSkinManager::onSkinCacheCleared)
-                .collect(Collectors.toList());
     }
 
-    private static boolean onSkinCacheCleared(ISkinCacheClearListener callback) {
+    private boolean onSkinCacheCleared(ISkinCacheClearListener callback) {
         try {
             return callback.onSkinCacheCleared();
         } catch (Exception e) {
@@ -314,6 +308,13 @@ public final class HDSkinManager implements IResourceManagerReloadListener {
         return loc == null ? res : loc;
     }
 
+    public void convertSkin(BufferedImage image) {
+        Graphics graphics = image.getGraphics();
+        convertSkin(image, graphics);
+        graphics.dispose();
+    }
+
+    @Override
     public void convertSkin(BufferedImage image, Graphics dest) {
         skinModifiers.forEach(a -> a.convertSkin(image, dest));
     }

src/hdskins/java/com/voxelmodpack/hdskins/ISkinAvailableCallback.java

@@ -0,0 +1,13 @@
+package com.voxelmodpack.hdskins;
+
+/**
+ * Callback for when a skin is loaded.
+ *
+ */
+@FunctionalInterface
+public interface ISkinAvailableCallback {
+    /**
+     * Called when a skin loads.
+     */
+    void skinAvailable();
+}

src/hdskins/java/com/voxelmodpack/hdskins/ImageBufferDownloadHD.java

@@ -3,6 +3,7 @@ package com.voxelmodpack.hdskins;
 import net.minecraft.client.renderer.IImageBuffer;
 
 import javax.annotation.Nullable;
+
 import java.awt.Graphics;
 import java.awt.image.BufferedImage;
 
@@ -12,6 +13,13 @@ public class ImageBufferDownloadHD implements IImageBuffer {
     private Graphics graphics;
     private BufferedImage image;
 
+    private ISkinAvailableCallback callback;
+
+    public ImageBufferDownloadHD withCallback(ISkinAvailableCallback callback) {
+        this.callback = callback;
+        return this;
+    }
+
     @Override
     @Nullable
     @SuppressWarnings({"SuspiciousNameCombination", "NullableProblems"})
@@ -19,6 +27,7 @@ public class ImageBufferDownloadHD implements IImageBuffer {
         if (downloadedImage == null) {
             return null;
         }
+
         int imageWidth = downloadedImage.getWidth();
         int imageHeight = downloadedImage.getHeight();
         if (imageHeight == imageWidth) {
@@ -61,5 +70,8 @@ public class ImageBufferDownloadHD implements IImageBuffer {
 
     @Override
     public void skinAvailable() {
+        if (callback != null) {
+            callback.skinAvailable();
+        }
     }
 }

src/hdskins/java/com/voxelmodpack/hdskins/PreviewTexture.java

@@ -24,7 +24,7 @@ public class PreviewTexture extends ThreadDownloadImageData {
     }
 
     public boolean isTextureUploaded() {
-        return uploaded && this.getGlTextureId() > -1;
+        return uploaded && getGlTextureId() > -1;
     }
 
     @Override

src/hdskins/java/com/voxelmodpack/hdskins/PreviewTextureManager.java

@@ -6,10 +6,9 @@ import com.mojang.authlib.minecraft.MinecraftProfileTexture.Type;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.IImageBuffer;
-import net.minecraft.client.resources.SkinManager;
+import net.minecraft.client.resources.SkinManager.SkinAvailableCallback;
 import net.minecraft.util.ResourceLocation;
 
-import java.awt.image.BufferedImage;
 import java.util.Map;
 
 import javax.annotation.Nullable;
@@ -26,37 +25,21 @@ public class PreviewTextureManager {
         this.textures = textures;
     }
 
-    private IImageBuffer getPreviewImageBuffer(MinecraftProfileTexture texture, ResourceLocation location, Type type, SkinManager.SkinAvailableCallback callback) {
-        if (type != Type.SKIN) {
-            return null;
-        }
-
-        IImageBuffer buffer = new ImageBufferDownloadHD();
-
-        return new IImageBuffer() {
-            @Override
     @Nullable
-            public BufferedImage parseUserSkin(BufferedImage image) {
+    public PreviewTexture getPreviewTexture(ResourceLocation location, Type type, ResourceLocation def, @Nullable SkinAvailableCallback callback) {
-                return buffer.parseUserSkin(image);
-            }
-
-            @Override
-            public void skinAvailable() {
-                if (callback != null) {
-                    callback.skinAvailable(type, location, new MinecraftProfileTexture(texture.getUrl(), Maps.newHashMap()));
-                }
-            }
-        };
-    }
-
-    @Nullable
-    public PreviewTexture getPreviewTexture(ResourceLocation location, Type type, ResourceLocation def, @Nullable SkinManager.SkinAvailableCallback callback) {
         if (!textures.containsKey(type)) {
             return null;
         }
 
         MinecraftProfileTexture texture = textures.get(type);
-        PreviewTexture skinTexture = new PreviewTexture(texture, def, getPreviewImageBuffer(texture, location, type, callback));
+
+        IImageBuffer buffer = type != Type.SKIN ? null : new ImageBufferDownloadHD().withCallback(() -> {
+            if (callback != null) {
+                callback.skinAvailable(type, location, new MinecraftProfileTexture(texture.getUrl(), Maps.newHashMap()));
+            }
+        });
+
+        PreviewTexture skinTexture = new PreviewTexture(texture, def, buffer);
 
         Minecraft.getMinecraft().getTextureManager().loadTexture(location, skinTexture);
 

src/hdskins/java/com/voxelmodpack/hdskins/gui/GuiSkins.java

@@ -93,19 +93,22 @@ public class GuiSkins extends GuiScreen {
     private boolean thinArmType = false;
 
     public GuiSkins() {
+        instance = this;
+
         Minecraft minecraft = Minecraft.getMinecraft();
         GameProfile profile = minecraft.getSession().getProfile();
 
         localPlayer = getModel(profile);
         remotePlayer = getModel(profile);
-        RenderManager rm = Minecraft.getMinecraft().getRenderManager();
+
+        RenderManager rm = minecraft.getRenderManager();
         rm.renderEngine = minecraft.getTextureManager();
         rm.options = minecraft.gameSettings;
         rm.renderViewEntity = localPlayer;
-        reloadRemoteSkin();
-        fetchingSkin = true;
 
-        instance = this;
+        reloadRemoteSkin();
+
+        fetchingSkin = true;
 
         panorama = new CubeMap(this);
         initPanorama();
@@ -125,6 +128,7 @@ public class GuiSkins extends GuiScreen {
         if (!(Keyboard.isKeyDown(Keyboard.KEY_LEFT) || Keyboard.isKeyDown(Keyboard.KEY_RIGHT))) {
             updateCounter++;
         }
+
         panorama.update();
 
         localPlayer.updateModel();
@@ -185,7 +189,9 @@ public class GuiSkins extends GuiScreen {
 
     @Override
     public void initGui() {
-        enableDnd();
+        GLWindow.current().setDropTargetListener((FileDropListener) files -> {
+            files.stream().findFirst().ifPresent(instance::loadLocalFile);
+        });
 
         panorama.init();
 
@@ -215,12 +221,6 @@ public class GuiSkins extends GuiScreen {
 
     }
 
-    private void enableDnd() {
-        GLWindow.current().setDropTargetListener((FileDropListener) files -> {
-            files.stream().findFirst().ifPresent(instance::loadLocalFile);
-        });
-    }
-
     @Override
     public void onGuiClosed() {
         super.onGuiClosed();
@@ -438,8 +438,7 @@ public class GuiSkins extends GuiScreen {
             drawHoveringText(I18n.format(text), mouseX, y);
         }
         if (btnAbout.isMouseOver()) {
-            SkinServer gateway = HDSkinManager.INSTANCE.getGatewayServer();
+            drawHoveringText(Splitter.on("\r\n").splitToList(HDSkinManager.INSTANCE.getGatewayServer().toString()), mouseX, mouseY);
-            drawHoveringText(Splitter.on("\r\n").splitToList(gateway.toString()), mouseX, mouseY);
         }
 
         if (fetchingSkin) {

src/hdskins/java/com/voxelmodpack/hdskins/mixin/MixinImageBufferDownload.java

@@ -8,25 +8,18 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
-import java.awt.Graphics;
 import java.awt.image.BufferedImage;
 
 @Mixin(ImageBufferDownload.class)
 public abstract class MixinImageBufferDownload implements IImageBuffer {
 
-    @Inject(
+    // convert skins from the mojang server
-            method = "parseUserSkin(Ljava/awt/image/BufferedImage;)Ljava/awt/image/BufferedImage;",
+    @Inject(method = "parseUserSkin(Ljava/awt/image/BufferedImage;)Ljava/awt/image/BufferedImage;",
             at = @At("RETURN"),
     cancellable = true)
     private void update(BufferedImage image, CallbackInfoReturnable<BufferedImage> ci) {
-        // convert skins from mojang server
+        if (image.getHeight() == 32) {
-        BufferedImage image2 = ci.getReturnValue();
+            HDSkinManager.INSTANCE.convertSkin(ci.getReturnValue());
-        boolean isLegacy = image.getHeight() == 32;
-        if (isLegacy) {
-            Graphics graphics = image2.getGraphics();
-            HDSkinManager.INSTANCE.convertSkin(image2, graphics);
-            graphics.dispose();
         }
     }
-
 }

src/hdskins/java/com/voxelmodpack/hdskins/mixin/MixinPlayerInfo.java

@@ -12,32 +12,27 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
-import java.util.Optional;
-
 @Mixin(NetworkPlayerInfo.class)
 public abstract class MixinPlayerInfo {
 
     @Shadow
     public abstract GameProfile getGameProfile();
 
-    @Inject(
+    @Inject(method = "getLocationSkin",
-            method = "getLocationSkin",
             cancellable = true,
             at = @At("RETURN"))
     private void getLocationSkin(CallbackInfoReturnable<ResourceLocation> ci) {
         getTextureLocation(ci, Type.SKIN);
     }
 
-    @Inject(
+    @Inject(method = "getLocationCape",
-            method = "getLocationCape",
             cancellable = true,
             at = @At("RETURN"))
     private void getLocationCape(CallbackInfoReturnable<ResourceLocation> ci) {
         getTextureLocation(ci, Type.CAPE);
     }
 
-    @Inject(
+    @Inject(method = "getLocationElytra",
-            method = "getLocationElytra",
             cancellable = true,
             at = @At("RETURN"))
     private void getLocationElytra(CallbackInfoReturnable<ResourceLocation> ci) {
@@ -45,24 +40,20 @@ public abstract class MixinPlayerInfo {
     }
 
     private void getTextureLocation(CallbackInfoReturnable<ResourceLocation> ci, Type type) {
-        Optional<ResourceLocation> texture = HDSkinManager.INSTANCE.getSkinLocation(getGameProfile(), type, true);
+        HDSkinManager.INSTANCE.getSkinLocation(getGameProfile(), type, true).ifPresent(ci::setReturnValue);
-        texture.ifPresent(ci::setReturnValue);
     }
 
-    @Inject(
+    @Inject(method = "getSkinType",
-            method = "getSkinType",
             cancellable = true,
             at = @At("RETURN"))
     private void getSkinType(CallbackInfoReturnable<String> ci) {
         MinecraftProfileTexture skin = HDSkinManager.INSTANCE.getProfileData(getGameProfile()).get(Type.SKIN);
         if (skin != null) {
+            HDSkinManager.INSTANCE.getSkinLocation(getGameProfile(), Type.SKIN, false).ifPresent(res -> {
                 String type = skin.getMetadata("model");
-            if (type == null)
-                type = "default";
-            String type1 = type;
-            Optional<ResourceLocation> texture = HDSkinManager.INSTANCE.getSkinLocation(getGameProfile(), Type.SKIN, false);
 
-            texture.ifPresent((res) -> ci.setReturnValue(type1));
+                ci.setReturnValue(type == null ? "default" : type);
+            });
         }
     }
 }

src/hdskins/java/com/voxelmodpack/hdskins/mixin/MixinSkullRenderer.java

@@ -3,6 +3,8 @@ package com.voxelmodpack.hdskins.mixin;
 import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.minecraft.MinecraftProfileTexture.Type;
 import com.voxelmodpack.hdskins.HDSkinManager;
+import com.voxelmodpack.hdskins.util.Optionals;
+
 import net.minecraft.client.renderer.tileentity.TileEntitySkullRenderer;
 import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
 import net.minecraft.tileentity.TileEntitySkull;
@@ -13,27 +15,20 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;
 
 import javax.annotation.Nullable;
-import java.util.Optional;
 
 @Mixin(TileEntitySkullRenderer.class)
 public abstract class MixinSkullRenderer extends TileEntitySpecialRenderer<TileEntitySkull> {
 
-    @Redirect(
+    @Redirect(method = "renderSkull",
-            method = "renderSkull",
+            at = @At(value = "INVOKE",
-            at = @At(
-                    value = "INVOKE",
                     target = "Lnet/minecraft/client/renderer/tileentity/TileEntitySkullRenderer;bindTexture(Lnet/minecraft/util/ResourceLocation;)V",
                     ordinal = 4))
     private void onBindTexture(TileEntitySkullRenderer tesr, ResourceLocation rl, float x, float y, float z, EnumFacing facing, float rotation, int meta,
-                               @Nullable GameProfile profile, int p_180543_8_, float ticks) {
+                               @Nullable GameProfile profile, int a, float ticks) {
         if (profile != null) {
-            Optional<ResourceLocation> skin = HDSkinManager.INSTANCE.getSkinLocation(profile, Type.SKIN, true);
+            bindTexture(Optionals.getOrDefault(HDSkinManager.INSTANCE.getSkinLocation(profile, Type.SKIN, true), rl));
-            if (skin.isPresent())
+        } else {
-                // rebind
-                bindTexture(skin.get());
-            else
-                bindTexture(rl);
-        } else
             bindTexture(rl);
         }
     }
+}

src/hdskins/java/com/voxelmodpack/hdskins/resources/ImageLoader.java

@@ -21,7 +21,7 @@ public class ImageLoader implements Supplier<ResourceLocation> {
     private final ResourceLocation original;
 
     public ImageLoader(ResourceLocation loc) {
-        this.original = loc;
+        original = loc;
     }
 
     @Override
@@ -49,7 +49,6 @@ public class ImageLoader implements Supplier<ResourceLocation> {
 
     @Nullable
     private static BufferedImage getImage(ResourceLocation res) {
-
         try (InputStream in = mc.getResourceManager().getResource(res).getInputStream()) {
             return TextureUtil.readBufferedImage(in);
         } catch (IOException e) {
@@ -59,9 +58,9 @@ public class ImageLoader implements Supplier<ResourceLocation> {
 
     @Nullable
     private ResourceLocation loadSkin(BufferedImage image) {
-
         ResourceLocation conv = new ResourceLocation(original.getResourceDomain() + "-converted", original.getResourcePath());
         boolean success = mc.getTextureManager().loadTexture(conv, new DynamicTextureImage(image));
+
         return success ? conv : null;
     }
 

src/hdskins/java/com/voxelmodpack/hdskins/resources/SkinResourceManager.java

@@ -17,6 +17,7 @@ import javax.annotation.Nullable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
@@ -25,8 +26,9 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 
 public class SkinResourceManager implements IResourceManagerReloadListener {
+    private final Gson GSON = new Gson();
 
-    private ExecutorService executor = Executors.newSingleThreadExecutor();
+    private ExecutorService executor;
 
     private Map<UUID, Skin> uuidSkins = Maps.newHashMap();
     private Map<String, Skin> namedSkins = Maps.newHashMap();
@@ -41,15 +43,16 @@ public class SkinResourceManager implements IResourceManagerReloadListener {
         executor = Executors.newSingleThreadExecutor();
         inProgress.clear();
         converted.clear();
+
         for (String domain : resourceManager.getResourceDomains()) {
             try {
                 for (IResource res : resourceManager.getAllResources(new ResourceLocation(domain, "textures/skins/skins.json"))) {
                     try {
-                        SkinData data = getSkinData(res.getInputStream());
+                        for (Skin s : getSkinData(res.getInputStream())) {
-                        for (Skin s : data.skins) {
                             if (s.uuid != null) {
                                 uuidSkins.put(s.uuid, s);
                             }
+
                             if (s.name != null) {
                                 namedSkins.put(s.name, s);
                             }
@@ -58,16 +61,13 @@ public class SkinResourceManager implements IResourceManagerReloadListener {
                         LiteLoaderLogger.warning(je, "Invalid skins.json in %s", res.getResourcePackName());
                     }
                 }
-            } catch (IOException e) {
+            } catch (IOException ignored) { }
-                // ignore
         }
     }
 
-    }
+    private List<Skin> getSkinData(InputStream stream) {
-
-    private SkinData getSkinData(InputStream stream) {
         try {
-            return new Gson().fromJson(new InputStreamReader(stream), SkinData.class);
+            return GSON.fromJson(new InputStreamReader(stream), SkinData.class).skins;
         } finally {
             IOUtils.closeQuietly(stream);
         }
@@ -75,16 +75,14 @@ public class SkinResourceManager implements IResourceManagerReloadListener {
 
     @Nullable
     public ResourceLocation getPlayerTexture(GameProfile profile, Type type) {
-        if (type != Type.SKIN)
+        if (type == Type.SKIN) {
-            // not supported
-            return null;
-
             Skin skin = getSkin(profile);
             if (skin != null) {
-            final ResourceLocation res = skin.getTexture();
+                return getConvertedResource(skin.getTexture());
-            return getConvertedResource(res);
             }
-        return null;
+        }
+
+        return null; // not supported
     }
 
     /**
@@ -99,31 +97,29 @@ public class SkinResourceManager implements IResourceManagerReloadListener {
         return converted.get(res);
     }
 
-    private void loadSkinResource(@Nullable final ResourceLocation res) {
+    /**
+     * read and convert in a new thread
+     */
+    private void loadSkinResource(@Nullable ResourceLocation res) {
         if (res != null) {
-            // read and convert in a new thread
+            inProgress.computeIfAbsent(res, r -> CompletableFuture.supplyAsync(new ImageLoader(r), executor).whenComplete((loc, t) -> {
-            this.inProgress.computeIfAbsent(res, r -> CompletableFuture.supplyAsync(new ImageLoader(r), executor)
+                if (loc != null) {
-                    .whenComplete((loc, t) -> {
-                        if (loc != null)
                     converted.put(res, loc);
-                        else {
+                } else {
                     LogManager.getLogger().warn("Errored while processing {}. Using original.", res, t);
                     converted.put(res, res);
                 }
             }));
-
-
         }
-
     }
 
     @Nullable
     private Skin getSkin(GameProfile profile) {
-        Skin skin = this.uuidSkins.get(profile.getId());
+        Skin skin = uuidSkins.get(profile.getId());
-        if (skin == null) {
+        if (skin != null) {
-            skin = this.namedSkins.get(profile.getName());
-        }
             return skin;
         }
 
+        return namedSkins.get(profile.getName());
+    }
 }

src/hdskins/java/com/voxelmodpack/hdskins/server/SkinServer.java

@@ -25,7 +25,7 @@ import javax.annotation.Nullable;
 
 public interface SkinServer extends Exposable {
 
-    static final Gson gson = new GsonBuilder()
+    public static final Gson gson = new GsonBuilder()
             .registerTypeAdapter(UUID.class, new UUIDTypeAdapter())
             .create();
 

src/hdskins/java/com/voxelmodpack/hdskins/upload/ThreadOpenFile.java

@@ -21,12 +21,9 @@ public abstract class ThreadOpenFile extends Thread {
      */
     protected final IOpenFileCallback parentScreen;
 
-    private JFileChooser fileDialog;
-
     private static String lastChosenFile = null;
 
-    protected ThreadOpenFile(Minecraft minecraft, String dialogTitle, IOpenFileCallback callback)
+    protected ThreadOpenFile(Minecraft minecraft, String dialogTitle, IOpenFileCallback callback) throws IllegalStateException {
-            throws IllegalStateException {
         if (minecraft.isFullScreen()) {
             throw new IllegalStateException("Cannot open an awt window whilst minecraft is in full screen mode!");
         }
@@ -37,13 +34,13 @@ public abstract class ThreadOpenFile extends Thread {
 
     @Override
     public void run() {
-        fileDialog = new JFileChooser();
+        JFileChooser fileDialog = new JFileChooser();
-        fileDialog.setDialogTitle(this.dialogTitle);
+        fileDialog.setDialogTitle(dialogTitle);
 
         if (lastChosenFile != null) {
             fileDialog.setSelectedFile(new File(lastChosenFile));
         }
-        fileDialog.setFileFilter(this.getFileFilter());
+        fileDialog.setFileFilter(getFileFilter());
 
         int dialogResult = fileDialog.showOpenDialog(InternalDialog.getAWTContext());
 
@@ -53,7 +50,7 @@ public abstract class ThreadOpenFile extends Thread {
             lastChosenFile = f.getAbsolutePath();
         }
 
-        this.parentScreen.onFileOpenDialogClosed(fileDialog, dialogResult);
+        parentScreen.onFileOpenDialogClosed(fileDialog, dialogResult);
     }
 
     /**

src/hdskins/java/com/voxelmodpack/hdskins/util/Optionals.java

@@ -0,0 +1,16 @@
+package com.voxelmodpack.hdskins.util;
+
+import java.util.Optional;
+
+/**
+ * Silly optionals
+ */
+public final class Optionals {
+    public static <T> T nullableOf(Optional<T> optional) {
+        return getOrDefault(optional, null);
+    }
+
+    public static <T> T getOrDefault(Optional<T> optional, T def) {
+        return optional.isPresent() ? optional.get() : def;
+    }
+}