Multi-Threading

src/main/java/com/thebrokenrail/modupdater/ModUpdater.java

@@ -6,6 +6,8 @@ import net.fabricmc.api.ModInitializer;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import java.util.Objects;
+
 public class ModUpdater implements ModInitializer {
     public static final String NAMESPACE = "modupdater";
 
@@ -21,19 +23,28 @@ public class ModUpdater implements ModInitializer {
 
     private static ModUpdate[] updates;
 
+    private static Thread updateThread;
+
     public static ModUpdate[] getUpdates() {
         if (updates == null) {
+            if (Thread.currentThread() == updateThread) {
                 updates = ModUpdateStrategies.findAvailableUpdates();
+            } else {
+                return null;
+            }
         }
         return updates;
     }
 
     @Override
     public void onInitialize() {
+        updateThread = new Thread(() -> {
             getLogger().info("Checking For Mod Updates...");
-        for (ModUpdate update : getUpdates()) {
+            for (ModUpdate update : Objects.requireNonNull(getUpdates())) {
                 getLogger().info(update.text + " (" + update.downloadURL + ')');
             }
             getLogger().info(updates.length + " Mod Update(s) Found");
+        });
+        //updateThread.start();
     }
 }

src/main/java/com/thebrokenrail/modupdater/client/gui/ModUpdateScreen.java

@@ -14,9 +14,11 @@ import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.text.TranslatableText;
 import net.minecraft.util.Util;
 
+import java.util.Arrays;
+
 @Environment(EnvType.CLIENT)
 public class ModUpdateScreen extends Screen {
-    private ModUpdateListWidget list;
+    public ModUpdateListWidget list;
     private ButtonWidget download;
     private final Screen parent;
 
@@ -56,15 +58,27 @@ public class ModUpdateScreen extends Screen {
     @Environment(EnvType.CLIENT)
     private static class ModUpdateListWidget extends EntryListWidget<ModUpdateEntry> {
         private final ModUpdateScreen screen;
+        private ModUpdate[] updates = null;
 
         private ModUpdateListWidget(MinecraftClient client, ModUpdateScreen screen) {
             super(client, screen.width, screen.height, 32, screen.height - 40, 18);
             this.screen = screen;
 
-            for (ModUpdate update : ModUpdater.getUpdates()) {
+            reload();
+        }
+
+        public void reload() {
+            ModUpdate[] newUpdates = ModUpdater.getUpdates();
+            if (!Arrays.equals(updates, newUpdates)) {
+                clearEntries();
+                if (newUpdates != null) {
+                    for (ModUpdate update : newUpdates) {
                         addEntry(new ModUpdateEntry(update, screen, this));
                     }
                 }
+                updates = newUpdates;
+            }
+        }
 
         @Override
         public int getRowWidth() {
@@ -100,6 +114,15 @@ public class ModUpdateScreen extends Screen {
         protected boolean isFocused() {
             return screen.getFocused() == this;
         }
+
+        @Override
+        public void render(MatrixStack matrices, int mouseX, int mouseY, float delta) {
+            reload();
+            super.render(matrices, mouseX, mouseY, delta);
+            if (updates == null) {
+                drawCenteredText(matrices, screen.textRenderer, new TranslatableText("gui.modupdater.loading"), width / 2, height / 2 - screen.textRenderer.fontHeight, 16777215);
+            }
+        }
     }
 
     @Environment(EnvType.CLIENT)

src/main/java/com/thebrokenrail/modupdater/strategy/ModUpdateStrategies.java

@@ -13,6 +13,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
 
 public class ModUpdateStrategies {
     private static final Map<String, ModUpdateStrategy> data = new HashMap<>();
@@ -40,7 +41,10 @@ public class ModUpdateStrategies {
     public static ModUpdate[] findAvailableUpdates() {
         List<ModUpdate> updates = new ArrayList<>();
 
+        AtomicInteger remaining = new AtomicInteger(0);
+
         for (ModContainer mod : FabricLoader.getInstance().getAllMods()) {
+            Thread thread = new Thread(() -> {
                 ModMetadata metadata = mod.getMetadata();
                 String name = metadata.getName() + " (" + metadata.getId() + ')';
 
@@ -59,10 +63,31 @@ public class ModUpdateStrategies {
                 }
 
                 if (update != null) {
+                    synchronized (updates) {
                         updates.add(update);
                     }
                 }
 
+                synchronized (remaining) {
+                    remaining.decrementAndGet();
+                    remaining.notifyAll();
+                }
+            });
+            synchronized (remaining) {
+                remaining.incrementAndGet();
+            }
+            thread.start();
+        }
+
+        synchronized (remaining) {
+            while (remaining.get() > 0) {
+                try {
+                    remaining.wait();
+                } catch (InterruptedException ignored) {
+                }
+            }
+        }
+
         return updates.toArray(new ModUpdate[0]);
     }
 

src/main/java/com/thebrokenrail/modupdater/util/Util.java

@@ -35,8 +35,10 @@ public class Util {
     public static final String JAR_EXTENSION = ".jar";
 
     public static String getVersionFromFileName(String fileName) {
+        while (!Character.isDigit(fileName.charAt(0))) {
             int index = fileName.indexOf("-");
             fileName = fileName.substring(index != -1 ? index + 1 : 0);
+        }
         if (fileName.endsWith(JAR_EXTENSION)) {
             fileName = fileName.substring(0, fileName.length() - JAR_EXTENSION.length());
         }

src/main/resources/assets/modupdater/lang/en_us.json

@@ -1,4 +1,5 @@
 {
     "gui.modupdater.title": "Available Mod Updates",
-    "gui.modupdater.download": "Download"
+    "gui.modupdater.download": "Download",
+    "gui.modupdater.loading": "Loading..."
 }