From ace140500734d33fe53126086a8d9278fa861e21 Mon Sep 17 00:00:00 2001
From: mat <github@matdoes.dev>
Date: Wed, 15 Dec 2021 13:08:36 -0600
Subject: isolate packets

---
 .../packets/handshake/client_intention_packet.rs   | 15 +++----
 minecraft-protocol/src/packets/handshake/mod.rs    | 47 +++++++++++++++++++++-
 2 files changed, 54 insertions(+), 8 deletions(-)

(limited to 'minecraft-protocol/src/packets/handshake')

diff --git a/minecraft-protocol/src/packets/handshake/client_intention_packet.rs b/minecraft-protocol/src/packets/handshake/client_intention_packet.rs
index 76957c6f..54a08f39 100644
--- a/minecraft-protocol/src/packets/handshake/client_intention_packet.rs
+++ b/minecraft-protocol/src/packets/handshake/client_intention_packet.rs
@@ -8,6 +8,8 @@ use crate::{
     packets::{ConnectionProtocol, Packet},
 };
 
+use super::HandshakePacket;
+
 #[derive(Hash, Clone, Debug)]
 pub struct ClientIntentionPacket {
     pub protocol_version: u32,
@@ -17,22 +19,21 @@ pub struct ClientIntentionPacket {
     pub intention: ConnectionProtocol,
 }
 
-#[async_trait]
 impl ClientIntentionPacket {
-    fn get(self) -> Packet {
-        Packet::ClientIntentionPacket(self)
+    pub fn get(self) -> HandshakePacket {
+        HandshakePacket::ClientIntentionPacket(self)
     }
 
-    fn write(&self, buf: &mut Vec<u8>) {
+    pub fn write(&self, buf: &mut Vec<u8>) {
         mc_buf::write_varint(buf, self.protocol_version as i32);
         mc_buf::write_utf(buf, &self.hostname);
         mc_buf::write_short(buf, self.port);
         mc_buf::write_varint(buf, self.intention.clone() as i32);
     }
 
-    async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
-        _buf: &mut BufReader<T>,
-    ) -> Result<Packet, String> {
+    pub async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        buf: &mut BufReader<T>,
+    ) -> Result<HandshakePacket, String> {
         Err("ClientIntentionPacket::parse not implemented".to_string())
         // Ok(ClientIntentionPacket {}.get())
     }
diff --git a/minecraft-protocol/src/packets/handshake/mod.rs b/minecraft-protocol/src/packets/handshake/mod.rs
index d2716299..792588b5 100644
--- a/minecraft-protocol/src/packets/handshake/mod.rs
+++ b/minecraft-protocol/src/packets/handshake/mod.rs
@@ -1,6 +1,51 @@
 pub mod client_intention_packet;
 
+use std::f32::consts::E;
+
+use async_trait::async_trait;
+use tokio::io::BufReader;
+
+use crate::connect::PacketFlow;
+
+use super::ProtocolPacket;
+
 #[derive(Clone, Debug)]
-pub enum HandshakePacket {
+pub enum HandshakePacket
+where
+    Self: Sized,
+{
     ClientIntentionPacket(client_intention_packet::ClientIntentionPacket),
 }
+
+#[async_trait]
+impl ProtocolPacket for HandshakePacket {
+    fn id(&self) -> u32 {
+        match self {
+            HandshakePacket::ClientIntentionPacket(_packet) => 0x00,
+        }
+    }
+
+    fn write(&self, buf: &mut Vec<u8>) {
+        match self {
+            HandshakePacket::ClientIntentionPacket(packet) => packet.write(buf),
+        }
+    }
+
+    /// Read a packet by its id, ConnectionProtocol, and flow
+    async fn read<T: tokio::io::AsyncRead + std::marker::Unpin + std::marker::Send>(
+        id: u32,
+        flow: &PacketFlow,
+        buf: &mut BufReader<T>,
+    ) -> Result<HandshakePacket, String>
+    where
+        Self: Sized,
+    {
+        match flow {
+            PacketFlow::ServerToClient => Err("HandshakePacket::read not implemented".to_string()),
+            PacketFlow::ClientToServer => match id {
+                0x00 => Ok(client_intention_packet::ClientIntentionPacket::read(buf).await?),
+                _ => Err(format!("Unknown ClientToServer status packet id: {}", id)),
+            },
+        }
+    }
+}
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