Use Paper command forwarding API (#4794)

Uses API added in PaperMC/Paper@9940bca, when available.

EssentialsDiscord/src/main/java/net/essentialsx/discord/util/DiscordCommandSender.java

@@ -6,11 +6,12 @@ import net.ess3.provider.providers.BukkitSenderProvider;
 import net.ess3.provider.providers.PaperCommandSender;
 import net.essentialsx.discord.JDADiscordService;
 import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
 import org.bukkit.scheduler.BukkitTask;
 
 public class DiscordCommandSender {
-    private final BukkitSenderProvider sender;
+    private final CommandSender sender;
     private BukkitTask task;
     private String responseBuffer = "";
     private long lastTime = System.currentTimeMillis();
@@ -20,7 +21,7 @@ public class DiscordCommandSender {
             responseBuffer = responseBuffer + (responseBuffer.isEmpty() ? "" : "\n") + MessageUtil.sanitizeDiscordMarkdown(FormatUtil.stripFormat(message));
             lastTime = System.currentTimeMillis();
         };
-        this.sender = (VersionUtil.isPaper() && VersionUtil.getServerBukkitVersion().isHigherThanOrEqualTo(VersionUtil.v1_16_5_R01)) ? new PaperCommandSender(sender, hook) : new BukkitSenderProvider(sender, hook);
+        this.sender = getCustomSender(sender, hook);
 
         task = Bukkit.getScheduler().runTaskTimerAsynchronously(jda.getPlugin(), () -> {
             if (!responseBuffer.isEmpty() && System.currentTimeMillis() - lastTime >= 1000) {
@@ -36,11 +37,21 @@ public class DiscordCommandSender {
         }, 0, 20);
     }
 
+    private CommandSender getCustomSender(final ConsoleCommandSender consoleSender, final BukkitSenderProvider.MessageHook hook) {
+        if (VersionUtil.isPaper() && VersionUtil.getServerBukkitVersion().isHigherThanOrEqualTo(VersionUtil.v1_16_5_R01)) {
+            if (PaperCommandSender.forwardingSenderAvailable()) {
+                return PaperCommandSender.createCommandSender(hook::sendMessage);
+            }
+            return new PaperCommandSender(consoleSender, hook);
+        }
+        return new BukkitSenderProvider(consoleSender, hook);
+    }
+
     public interface CmdCallback {
         void onMessage(String message);
     }
 
-    public BukkitSenderProvider getSender() {
+    public CommandSender getSender() {
         return sender;
     }
 }

providers/PaperProvider/src/main/java/net/ess3/provider/providers/PaperCommandSender.java

@@ -1,21 +1,49 @@
 package net.ess3.provider.providers;
 
+import io.papermc.paper.text.PaperComponents;
 import net.kyori.adventure.audience.MessageType;
 import net.kyori.adventure.identity.Identified;
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.ComponentLike;
 import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.function.Consumer;
+
 public class PaperCommandSender extends BukkitSenderProvider {
+    private static final boolean FORWARDING_SENDER_AVAILABLE;
+
+    static {
+        boolean jmpHappy;
+        try {
+            Bukkit.createCommandSender(component -> {});
+            jmpHappy = true;
+        } catch (NoSuchMethodError ignored) {
+            jmpHappy = false;
+        }
+        FORWARDING_SENDER_AVAILABLE = jmpHappy;
+    }
+
     public PaperCommandSender(ConsoleCommandSender base, MessageHook hook) {
         super(base, hook);
     }
 
+    public static boolean forwardingSenderAvailable() {
+        return FORWARDING_SENDER_AVAILABLE;
+    }
+
+    public static CommandSender createCommandSender(Consumer<String> consumer) {
+        if (!forwardingSenderAvailable()) {
+            return null;
+        }
+        return Bukkit.createCommandSender(component -> consumer.accept(PaperComponents.legacySectionSerializer().serialize(component)));
+    }
+
     @Override
-    public void sendMessage(Identity identity, Component message, MessageType type) {
+    public void sendMessage(@NotNull Identity identity, @NotNull Component message, @NotNull MessageType type) {
         sendDumbComponent(message);
     }
 
@@ -25,57 +53,57 @@ public class PaperCommandSender extends BukkitSenderProvider {
     }
 
     @Override
-    public void sendMessage(Identified source, ComponentLike message) {
+    public void sendMessage(@NotNull Identified source, ComponentLike message) {
         sendDumbComponent(message.asComponent());
     }
 
     @Override
-    public void sendMessage(Identity source, ComponentLike message) {
+    public void sendMessage(@NotNull Identity source, ComponentLike message) {
         sendDumbComponent(message.asComponent());
     }
 
     @Override
-    public void sendMessage(Component message) {
+    public void sendMessage(@NotNull Component message) {
         sendDumbComponent(message);
     }
 
     @Override
-    public void sendMessage(Identified source, Component message) {
+    public void sendMessage(@NotNull Identified source, @NotNull Component message) {
         sendDumbComponent(message);
     }
 
     @Override
-    public void sendMessage(Identity source, Component message) {
+    public void sendMessage(@NotNull Identity source, @NotNull Component message) {
         sendDumbComponent(message);
     }
 
     @Override
-    public void sendMessage(ComponentLike message, MessageType type) {
+    public void sendMessage(ComponentLike message, @NotNull MessageType type) {
         sendDumbComponent(message.asComponent());
     }
 
     @Override
-    public void sendMessage(Identified source, ComponentLike message, MessageType type) {
+    public void sendMessage(@NotNull Identified source, ComponentLike message, @NotNull MessageType type) {
         sendDumbComponent(message.asComponent());
     }
 
     @Override
-    public void sendMessage(Identity source, ComponentLike message, MessageType type) {
+    public void sendMessage(@NotNull Identity source, ComponentLike message, @NotNull MessageType type) {
         sendDumbComponent(message.asComponent());
     }
 
     @Override
-    public void sendMessage(Component message, MessageType type) {
+    public void sendMessage(@NotNull Component message, @NotNull MessageType type) {
         sendDumbComponent(message);
     }
 
     @Override
-    public void sendMessage(Identified source, Component message, MessageType type) {
+    public void sendMessage(@NotNull Identified source, @NotNull Component message, @NotNull MessageType type) {
         sendDumbComponent(message);
     }
 
     public void sendDumbComponent(Component message) {
-        sendMessage(Bukkit.getUnsafe().legacyComponentSerializer().serialize(message));
+        sendMessage(PaperComponents.legacySectionSerializer().serialize(message));
     }
 
     @Override