Improve brigardier command registration

build.gradle.kts

@@ -30,6 +30,8 @@ dependencies {
     api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.2")
     api("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1")
     api("org.jetbrains.kotlinx:kotlinx-coroutines-jdk8:1.5.1")
+
+    api("me.lucko:commodore:1.10")
 }
 
 tasks {

src/main/kotlin/net/axay/kspigot/commands/BrigardierSupport.kt

@@ -2,14 +2,9 @@
 
 package net.axay.kspigot.commands
 
-import com.mojang.brigadier.CommandDispatcher
-import com.mojang.brigadier.builder.LiteralArgumentBuilder
-import net.axay.kspigot.annotations.NMS_1_17
-import net.axay.kspigot.annotations.NMS_General
-import net.axay.kspigot.extensions.onlinePlayers
-import net.axay.kspigot.extensions.server
-import net.axay.kspigot.utils.reflectField
-import net.minecraft.commands.CommandListenerWrapper
+import com.mojang.brigadier.tree.LiteralCommandNode
+import me.lucko.commodore.CommodoreProvider
+import net.axay.kspigot.main.PluginInstance
 
 /**
  * This class provides Brigardier support. It does that
@@ -17,65 +12,17 @@ import net.minecraft.commands.CommandListenerWrapper
  * using some obfuscated functions.
  */
 object BrigardierSupport {
-    @PublishedApi
-    internal val commands = LinkedHashSet<LiteralArgumentBuilder<CommandListenerWrapper>>()
-
-    private var executedDefaultRegistration = false
-
-    /**
-     * The command manager is used to hold the command dispatcher,
-     * and to manage and dispatch the brigardier commands for
-     * all players on the server.
-     */
-    @Suppress("HasPlatformType") // do not refer non-lazily to the type in this class
-    @NMS_General
-    val commandManager by lazy {
-        (server as org.bukkit.craftbukkit.v1_17_R1.CraftServer).server.commandDispatcher
+    private val provider = if (CommodoreProvider.isSupported()) CommodoreProvider.getCommodore(PluginInstance) else kotlin.run {
+        PluginInstance.logger.severe("Could not initialize Brigardier support on the current Minecraft version! (Requested by ${PluginInstance.name})")
+        null
     }
 
-    /**
-     * The command dispatcher is used to register brigardier commands.
-     */
-    @NMS_1_17
-    val commandDispatcher by lazy {
-        // g = the command dispatcher
-        commandManager.reflectField<CommandDispatcher<CommandListenerWrapper>>("g")
-    }
-
-    @NMS_General
-    internal fun registerAll() {
-        executedDefaultRegistration = true
-
-        if (commands.isNotEmpty()) {
-            commands.forEach { commandDispatcher.register(it) }
-            if (onlinePlayers.isNotEmpty())
-                updateCommandTree()
-        }
-    }
-
-    @NMS_1_17
-    fun updateCommandTree() {
-        onlinePlayers.forEach {
-            // send the command tree
-            commandManager.a((it as org.bukkit.craftbukkit.v1_17_R1.entity.CraftPlayer).handle)
-        }
-    }
-
-    /**
-     * Registers this command at the [CommandDispatcher] of the server.
-     *
-     * @param sendToPlayers whether the new command tree should be send to
-     * all players, this is true by default, but you can disable it if you are
-     * calling this function as the server is starting
-     */
-    @NMS_General
-    fun LiteralArgumentBuilder<CommandListenerWrapper>.register(sendToPlayers: Boolean = true) {
-        if (!executedDefaultRegistration)
-            commands += this
-        else {
-            commandDispatcher.register(this)
-            if (sendToPlayers)
-                updateCommandTree()
+    fun register(name: String, brigardierCommand: LiteralCommandNode<*>) {
+        val command = PluginInstance.getCommand(name)
+        if (command == null) {
+            PluginInstance.logger.severe("Could not register command '$name' of plugin ${PluginInstance.name}! Maybe it is missing from the plugin.yml?")
+            return
         }
+        provider?.register(command, brigardierCommand)
     }
 }

src/main/kotlin/net/axay/kspigot/commands/BrigardierWrapper.kt

@@ -6,6 +6,7 @@ import com.mojang.brigadier.builder.LiteralArgumentBuilder
 import com.mojang.brigadier.builder.RequiredArgumentBuilder
 import com.mojang.brigadier.context.CommandContext
 import com.mojang.brigadier.exceptions.SimpleCommandExceptionType
+import com.mojang.brigadier.tree.LiteralCommandNode
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
@@ -26,10 +27,10 @@ inline fun command(
     name: String,
     register: Boolean = true,
     builder: LiteralArgumentBuilder<CommandListenerWrapper>.() -> Unit,
-): LiteralArgumentBuilder<CommandListenerWrapper> =
-    LiteralArgumentBuilder.literal<CommandListenerWrapper>(name).apply(builder).apply {
+): LiteralCommandNode<CommandListenerWrapper> =
+    LiteralArgumentBuilder.literal<CommandListenerWrapper>(name).apply(builder).build().apply {
         if (register)
-            BrigardierSupport.commands += this
+            BrigardierSupport.register(name, this)
     }
 
 /**