Add Quilt support

Author: NonSwag

README.md

@@ -34,6 +34,10 @@ dev.faststats.metrics:neoforge:<sdk-version>+mc26.3
 Each artifact only declares the Minecraft version it was built for in its `fabric.mod.json`, `mods.toml` or
 `neoforge.mods.toml`.
 
+The Fabric artifact also supports Quilt, which loads Fabric mods.
+On Quilt it reports Quilt and the Quilt Loader version instead of Fabric.
+It needs Quilt Loader 0.30.0 or newer and Fabric API or Quilted Fabric API.
+
 See [CONTRIBUTING.md](CONTRIBUTING.md) for how the version-specific code is organized and how to add a Minecraft
 version.
 

fabric/src/main/java/dev/faststats/fabric/FabricMetrics.java

@@ -13,19 +13,24 @@ protected FabricMetrics(final Factory factory, final ModContainer mod) throws Il
         this.mod = mod;
     }
 
-    protected void appendFabricData(final JsonObject metrics, final String serverType) {
+    protected void appendFabricData(final JsonObject metrics, final boolean client) {
+        final var loader = isQuilt() ? "Quilt" : "Fabric";
         metrics.addProperty("game_version", minecraftVersion());
         metrics.addProperty("platform_version", platformVersion());
         metrics.addProperty("plugin_version", mod.getMetadata().getVersion().getFriendlyString());
-        metrics.addProperty("server_type", serverType);
+        metrics.addProperty("server_type", client ? loader + " Client" : loader);
     }
 
     protected static String minecraftVersion() {
         return version("minecraft");
     }
 
     protected static String platformVersion() {
-        return version("fabricloader");
+        return version(isQuilt() ? "quilt_loader" : "fabricloader");
+    }
+
+    private static boolean isQuilt() {
+        return FabricLoader.getInstance().isModLoaded("quilt_loader");
     }
 
     private static String version(final String modId) {

fabric/src/main/java/dev/faststats/fabric/FabricMetricsClient.java

@@ -21,6 +21,6 @@ public boolean isClientApplication() {
     protected void appendDefaultData(final JsonObject metrics) {
         metrics.addProperty("online_mode", compatibilityLayer.clientOnlineMode());
         metrics.addProperty("player_count", compatibilityLayer.clientPlayerCount());
-        appendFabricData(metrics, "Fabric Client");
+        appendFabricData(metrics, true);
     }
 }

fabric/src/main/java/dev/faststats/fabric/FabricMetricsServer.java

@@ -17,6 +17,6 @@ final class FabricMetricsServer extends FabricMetrics {
     protected void appendDefaultData(final JsonObject metrics) {
         metrics.addProperty("online_mode", compatibilityLayer.serverOnlineMode());
         metrics.addProperty("player_count", compatibilityLayer.serverPlayerCount());
-        appendFabricData(metrics, "Fabric");
+        appendFabricData(metrics, false);
     }
 }