Use ClientIntention over ConnectionProtocol for ClientIntentionPacket (#143)

* fix!: use ClientIntention over ConnectionProtocol for ClientIntentionPacket

* chore: remove McBufRead/Writable from ConnectionProtocol

* chore: use From over Into for ClientIntention to ConnectionProtocol conversion

* chore: organise imports in existing style

1 files changed, 33 insertions, 4 deletions

diff --git a/azalea-protocol/src/packets/mod.rs b/azalea-protocol/src/packets/mod.rs
index 63a0c1c9..044bb56c 100755
--- a/azalea-protocol/src/packets/mod.rs
+++ b/azalea-protocol/src/packets/mod.rs
@@ -50,15 +50,44 @@ where
     fn write(&self, buf: &mut impl Write) -> Result<(), std::io::Error>;
 }
 
-impl azalea_buf::McBufReadable for ConnectionProtocol {
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum ClientIntention {
+    Status = 1,
+    Login = 2,
+    Transfer = 3
+}
+
+impl TryFrom<i32> for ClientIntention {
+    type Error = ();
+
+    fn try_from(value: i32) -> Result<Self, Self::Error> {
+        match value {
+            1 => Ok(ClientIntention::Status),
+            2 => Ok(ClientIntention::Login),
+            3 => Ok(ClientIntention::Transfer),
+            _ => Err(()),
+        }
+    }
+}
+
+impl From<ClientIntention> for ConnectionProtocol {
+    fn from(intention: ClientIntention) -> Self {
+        match intention {
+            ClientIntention::Status => ConnectionProtocol::Status,
+            ClientIntention::Login | ClientIntention::Transfer => ConnectionProtocol::Login,
+        }
+    }
+}
+
+impl azalea_buf::McBufReadable for ClientIntention {
     fn read_from(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
         let id = i32::var_read_from(buf)?;
-        ConnectionProtocol::from_i32(id).ok_or(BufReadError::UnexpectedEnumVariant { id })
+        id.try_into().map_err(|_| BufReadError::UnexpectedEnumVariant { id })
     }
 }
 
-impl McBufWritable for ConnectionProtocol {
+impl McBufWritable for ClientIntention {
     fn write_into(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
         (*self as i32).var_write_into(buf)
     }
-}
+}
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