From 80a59f7478eb310b8ae01fd5bc4c013abc7cf967 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Sun, 30 May 2021 17:43:52 -0400
Subject: [PATCH] Add API exposure for platform and platform-specific protocol
 versions

---
 .../velocitypowered/api/network/PlatformVersion.java | 12 ++++++++++++
 .../api/network/registry/Platform.java               | 10 ++++++++++
 .../network/registry/ProtocolVersionRegistry.java    |  8 ++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
 create mode 100644 api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
 create mode 100644 api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java

diff --git a/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java b/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
new file mode 100644
index 000000000..0be6e33ff
--- /dev/null
+++ b/api/src/main/java/com/velocitypowered/api/network/PlatformVersion.java
@@ -0,0 +1,12 @@
+package com.velocitypowered.api.network;
+
+import com.velocitypowered.api.network.registry.Platform;
+import java.util.List;
+
+public interface PlatformVersion {
+  Platform platform();
+
+  int protocolVersion();
+
+  List<String> supportedVersions();
+}
diff --git a/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java b/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
new file mode 100644
index 000000000..f532273a7
--- /dev/null
+++ b/api/src/main/java/com/velocitypowered/api/network/registry/Platform.java
@@ -0,0 +1,10 @@
+package com.velocitypowered.api.network.registry;
+
+public interface Platform {
+  Platform JAVA = new Platform() {
+    @Override
+    public String toString() {
+      return "Java Edition";
+    }
+  };
+}
diff --git a/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java b/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java
new file mode 100644
index 000000000..91930547d
--- /dev/null
+++ b/api/src/main/java/com/velocitypowered/api/network/registry/ProtocolVersionRegistry.java
@@ -0,0 +1,8 @@
+package com.velocitypowered.api.network.registry;
+
+import com.velocitypowered.api.network.PlatformVersion;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+public interface ProtocolVersionRegistry {
+  @Nullable PlatformVersion lookup(Platform platform, int version);
+}