Introduce VelocityBrigadierMessage (#588)

api/src/main/java/com/velocitypowered/api/command/VelocityBrigadierMessage.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2018 Velocity Contributors
+ *
+ * The Velocity API is licensed under the terms of the MIT License. For more details,
+ * reference the LICENSE file in the api top-level directory.
+ */
+
+package com.velocitypowered.api.command;
+
+import com.google.common.base.Preconditions;
+import com.mojang.brigadier.Message;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents an implementation of brigadier's {@link Message}, providing support for {@link
+ * Component} messages.
+ */
+public final class VelocityBrigadierMessage implements Message, ComponentLike {
+
+  public static VelocityBrigadierMessage tooltip(Component message) {
+    return new VelocityBrigadierMessage(message);
+  }
+
+  private final Component message;
+
+  private VelocityBrigadierMessage(Component message) {
+    this.message = Preconditions.checkNotNull(message, "message");
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  @Override
+  @NotNull
+  public Component asComponent() {
+    return message;
+  }
+
+  /**
+   * Returns the message as a plain text.
+   *
+   * @return message as plain text
+   */
+  @Override
+  public String getString() {
+    return PlainTextComponentSerializer.plainText().serialize(message);
+  }
+}