Add version command

Author: SeraphJACK

src/main/java/top/seraphjack/rmc/RMC.java

@@ -11,6 +11,7 @@
 import net.neoforged.neoforge.event.RegisterCommandsEvent;
 import net.neoforged.neoforge.event.server.ServerStartedEvent;
 import net.neoforged.neoforge.event.server.ServerStoppingEvent;
+import net.neoforged.neoforgespi.language.IModInfo;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import top.seraphjack.backupcore.BackupCore;
@@ -30,8 +31,11 @@ public final class RMC {
     static BackupCore backupCore;
     static List<Snapshot> snapshotListCache = List.of();
 
+    static IModInfo modInfo;
+
     public RMC(ModContainer modContainer) {
         modContainer.registerConfig(ModConfig.Type.COMMON, Config.SPEC);
+        modInfo = modContainer.getModInfo();
     }
 
     @SubscribeEvent

src/main/java/top/seraphjack/rmc/RMCCommand.java

@@ -50,7 +50,8 @@ static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
                                 .requires(p -> p.hasPermission(4))
                                 .then(argument("snapshot", StringArgumentType.string())
                                         .executes(RMCCommand::restore)))
-
+                        .then(literal("version")
+                                .executes(RMCCommand::version))
         );
     }
 
@@ -101,4 +102,8 @@ private static int restore(CommandContext<CommandSourceStack> context) {
         return SINGLE_SUCCESS;
     }
 
+    private static int version(CommandContext<CommandSourceStack> context) {
+        context.getSource().sendSuccess(() -> Component.literal("RMC version " + RMC.modInfo.getVersion()), false);
+        return SINGLE_SUCCESS;
+    }
 }