upload client name and server address as description

platform/1.20.1/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.20.4/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.20.6/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.21.1/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.21.11/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.util.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.21.4/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.21.5/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/1.21.8/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.Util;
@@ -88,6 +89,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/26.2/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -2,6 +2,7 @@ package dev.photosync.platform.impl;
 
 import dev.photosync.core.capture.CameraPose;
 import dev.photosync.mcapi.GameContext;
+import dev.photosync.platform.WindowTitle;
 import lombok.extern.slf4j.Slf4j;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.util.Util;
@@ -89,6 +90,18 @@ public final class GameAdapter implements GameContext {
         return minecraftVersion;
     }
 
+    @Override
+    public String clientName() {
+        String title = WindowTitle.last();
+        return title == null || title.isBlank() ? "Minecraft" : title;
+    }
+
+    @Override
+    public Optional<String> serverAddress() {
+        return Optional.ofNullable(Minecraft.getInstance().getCurrentServer())
+                .map(server -> server.ip);
+    }
+
     @Override
     public void quit() {
         Minecraft.getInstance().stop();

platform/common/src/main/java/dev/photosync/platform/WindowTitle.java

@@ -0,0 +1,29 @@
+package dev.photosync.platform;
+
+/**
+ * The most recent window title, for the upload description's client name.
+ *
+ * <p>Static for the same reason as {@code ScreenshotBus} and {@code QuitGuard}:
+ * the thing that notices the title changing is {@code TitleMixin}, woven into a
+ * Minecraft class that nobody constructs, so it has nowhere to be handed a
+ * collaborator. A static rendezvous point is the only option, and the mixin
+ * writes here and the {@code GameAdapter} reads from here, so the storage has
+ * exactly one owner.
+ */
+public final class WindowTitle {
+
+    private static volatile String last = "";
+
+    private WindowTitle() {
+    }
+
+    /** Called by {@code TitleMixin} whenever the window is given a title. */
+    public static void record(String title) {
+        last = title;
+    }
+
+    /** The current window title, or empty before the first {@code setTitle}. */
+    public static String last() {
+        return last;
+    }
+}

platform/common/src/main/java/dev/photosync/platform/mixin/TitleMixin.java

@@ -0,0 +1,30 @@
+package dev.photosync.platform.mixin;
+
+import com.mojang.blaze3d.platform.Window;
+import dev.photosync.platform.WindowTitle;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+/**
+ * Hooks the window title, for the upload description's client name.
+ *
+ * <p>There is no way to read the title back from GLFW before lwjgl 3.4 (the
+ * buckets below 26.x ship 3.3.x, which has no {@code glfwGetWindowTitle}), so
+ * the title is captured as every caller passes it through {@code setTitle} --
+ * the one public way to change it, and the one every title mod uses.
+ *
+ * <p>Like {@code QuitMixin}, the hook only records into a static holder and
+ * holds no state of its own. {@code setTitle(String)} has not moved in the
+ * supported range; the day a bucket disagrees, this class moves down into all
+ * nine copies like any other common class.
+ */
+@Mixin(Window.class)
+public class TitleMixin {
+
+    @Inject(method = "setTitle", at = @At("HEAD"))
+    private void photosync$capture(String title, CallbackInfo callback) {
+        WindowTitle.record(title);
+    }
+}

platform/common/src/main/resources/photosync.mixins.json

@@ -6,7 +6,8 @@
   "client": [
     "CaptureMixin",
     "HudMixin",
-    "QuitMixin"
+    "QuitMixin",
+    "TitleMixin"
   ],
   "injectors": {
     "defaultRequire": 1