add reload configuration

README.md

@@ -8,3 +8,12 @@ This branch is Fabric-only and intentionally separates authority:
 Minecraft 26.2 uses the unobfuscated Mojang/official names and Java 25. This port therefore does not reuse the old Yarn-named common/client GUI classes from 0.2.2. Client rendering lives only in `src/client`, while server/gameplay code lives in `src/main`.
 
 Run `compiler.bat` on Windows or `./compiler.sh` on Linux/macOS. The script checks whether the existing JAR contains the same `mod_version+mc<minecraft_version>` as `gradle.properties`; matching builds offer Push/Recompile/Quit. After a successful build it offers Git push and retries failed pushes in groups of three.
+
+## Commands (v0.3.2)
+
+`/idt reload`
+
+- Client player (non-operator): reloads only `item-despawn-timer-client.json`.
+- Client player (operator/moderator): reloads the client config and requests a server-config reload. The server validates permission before accepting the request.
+- Dedicated-server console: reloads only `item-despawn-timer-server.json`.
+- The server-side `/idt reload` node requires Minecraft moderator/operator permission, so it is not advertised by the server command tree to ordinary players. The client-side command remains available because ordinary players are allowed to reload their own presentation config.

gradle.properties

@@ -3,6 +3,6 @@ org.gradle.configuration-cache=false
 minecraft_version=26.2
 loader_version=0.19.3
 fabric_version=0.160.0+26.2
-mod_version=0.3.1
+mod_version=0.3.2
 maven_group=whirlfrenzy.itemdespawntimer
 archives_base_name=item-despawn-timer

src/client/java/whirlfrenzy/itemdespawntimer/client/ItemDespawnTimerClient.java

@@ -1,3 +1,17 @@
 package whirlfrenzy.itemdespawntimer.client;
-import net.fabricmc.api.ClientModInitializer; import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking; import whirlfrenzy.itemdespawntimer.network.TimerSyncPayload;
-public final class ItemDespawnTimerClient implements ClientModInitializer { @Override public void onInitializeClient(){ ClientConfig.load(); ClientPlayNetworking.registerGlobalReceiver(TimerSyncPayload.TYPE,(p,c)->ClientTimerData.put(p.entityId(),p.age(),p.lifespan())); } }
+
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
+import whirlfrenzy.itemdespawntimer.client.command.ItemDespawnTimerClientCommands;
+import whirlfrenzy.itemdespawntimer.network.TimerSyncPayload;
+
+public final class ItemDespawnTimerClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+        ClientConfig.load();
+        ItemDespawnTimerClientCommands.register();
+        ClientPlayNetworking.registerGlobalReceiver(
+                TimerSyncPayload.TYPE,
+                (payload, context) -> ClientTimerData.put(payload.entityId(), payload.age(), payload.lifespan()));
+    }
+}

src/client/java/whirlfrenzy/itemdespawntimer/client/command/ItemDespawnTimerClientCommands.java

@@ -0,0 +1,33 @@
+package whirlfrenzy.itemdespawntimer.client.command;
+
+import net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback;
+import net.fabricmc.fabric.api.client.command.v2.ClientCommands;
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
+import net.minecraft.network.chat.Component;
+import whirlfrenzy.itemdespawntimer.client.ClientConfig;
+import whirlfrenzy.itemdespawntimer.network.ReloadConfigPayload;
+
+/**
+ * Client-side /idt reload is intentionally available to every player.
+ * It always reloads the local presentation config. A C2S request is also sent;
+ * the server silently accepts it only when the player has operator/moderator permission.
+ */
+public final class ItemDespawnTimerClientCommands {
+    private ItemDespawnTimerClientCommands() {}
+
+    public static void register() {
+        ClientCommandRegistrationCallback.EVENT.register((dispatcher, registryAccess) ->
+                dispatcher.register(ClientCommands.literal("idt")
+                        .then(ClientCommands.literal("reload")
+                                .executes(context -> {
+                                    ClientConfig.load();
+                                    context.getSource().sendFeedback(
+                                            Component.literal("[Item Despawn Timer] Client config reloaded."));
+
+                                    if (ClientPlayNetworking.canSend(ReloadConfigPayload.TYPE)) {
+                                        ClientPlayNetworking.send(new ReloadConfigPayload(true));
+                                    }
+                                    return 1;
+                                }))));
+    }
+}

src/main/java/whirlfrenzy/itemdespawntimer/ItemDespawnTimer.java

@@ -2,18 +2,43 @@ package whirlfrenzy.itemdespawntimer;
 
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry;
+import net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking;
+import net.minecraft.network.chat.Component;
 import net.minecraft.resources.Identifier;
+import net.minecraft.server.permissions.Permissions;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import whirlfrenzy.itemdespawntimer.command.ItemDespawnTimerCommands;
 import whirlfrenzy.itemdespawntimer.config.ServerConfig;
+import whirlfrenzy.itemdespawntimer.network.ReloadConfigPayload;
 import whirlfrenzy.itemdespawntimer.network.TimerSyncPayload;
 
 public final class ItemDespawnTimer implements ModInitializer {
     public static final String MOD_ID = "item-despawn-timer";
     public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
-    public static Identifier id(String path) { return Identifier.fromNamespaceAndPath(MOD_ID, path); }
-    @Override public void onInitialize() {
+
+    public static Identifier id(String path) {
+        return Identifier.fromNamespaceAndPath(MOD_ID, path);
+    }
+
+    @Override
+    public void onInitialize() {
         ServerConfig.load();
+
         PayloadTypeRegistry.clientboundPlay().register(TimerSyncPayload.TYPE, TimerSyncPayload.CODEC);
+        PayloadTypeRegistry.serverboundPlay().register(ReloadConfigPayload.TYPE, ReloadConfigPayload.CODEC);
+
+        ServerPlayNetworking.registerGlobalReceiver(ReloadConfigPayload.TYPE, (payload, context) -> {
+            if (!payload.requested()) return;
+
+            // Never trust the client: only an operator/moderator may reload server configuration.
+            if (!context.player().permissions().hasPermission(Permissions.COMMANDS_MODERATOR)) return;
+
+            ServerConfig.load();
+            context.player().sendSystemMessage(
+                    Component.literal("[Item Despawn Timer] Client and server configs reloaded."));
+        });
+
+        ItemDespawnTimerCommands.register();
     }
 }

src/main/java/whirlfrenzy/itemdespawntimer/command/ItemDespawnTimerCommands.java

@@ -0,0 +1,29 @@
+package whirlfrenzy.itemdespawntimer.command;
+
+import com.mojang.brigadier.context.CommandContext;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.commands.Commands;
+import net.minecraft.network.chat.Component;
+import net.minecraft.server.permissions.Permissions;
+import whirlfrenzy.itemdespawntimer.config.ServerConfig;
+
+/** Server-side /idt commands. The reload branch is only sent to command sources with moderator permission. */
+public final class ItemDespawnTimerCommands {
+    private ItemDespawnTimerCommands() {}
+
+    public static void register() {
+        CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, environment) ->
+                dispatcher.register(Commands.literal("idt")
+                        .then(Commands.literal("reload")
+                                .requires(source -> source.permissions().hasPermission(Permissions.COMMANDS_MODERATOR))
+                                .executes(ItemDespawnTimerCommands::reloadServerConfig))));
+    }
+
+    private static int reloadServerConfig(CommandContext<CommandSourceStack> context) {
+        ServerConfig.load();
+        context.getSource().sendSuccess(
+                () -> Component.literal("[Item Despawn Timer] Server config reloaded."), false);
+        return 1;
+    }
+}

src/main/java/whirlfrenzy/itemdespawntimer/network/ReloadConfigPayload.java

@@ -0,0 +1,20 @@
+package whirlfrenzy.itemdespawntimer.network;
+
+import net.minecraft.network.RegistryFriendlyByteBuf;
+import net.minecraft.network.codec.ByteBufCodecs;
+import net.minecraft.network.codec.StreamCodec;
+import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
+import whirlfrenzy.itemdespawntimer.ItemDespawnTimer;
+
+/** Client request to reload the server config. The server always validates operator permission. */
+public record ReloadConfigPayload(boolean requested) implements CustomPacketPayload {
+    public static final Type<ReloadConfigPayload> TYPE = new Type<>(ItemDespawnTimer.id("reload_config"));
+    public static final StreamCodec<RegistryFriendlyByteBuf, ReloadConfigPayload> CODEC = StreamCodec.composite(
+            ByteBufCodecs.BOOL, ReloadConfigPayload::requested,
+            ReloadConfigPayload::new);
+
+    @Override
+    public Type<? extends CustomPacketPayload> type() {
+        return TYPE;
+    }
+}