good structure

src/response.rs

@@ -4,6 +4,7 @@ pub type Result<T = Response> = std::result::Result<T, Error>;
 pub enum Response {
     Pong,
     Success,
+    Player { cloak: String },
 }
 
 impl std::fmt::Display for Response {
@@ -11,6 +12,7 @@ impl std::fmt::Display for Response {
         match self {
             Response::Pong => write!(f, "Pong"),
             Response::Success => write!(f, "Success"),
+            Response::Player { cloak } => write!(f, "@cloak={cloak}"),
         }
     }
 }
@@ -23,6 +25,7 @@ pub enum Error {
     ParameterNotFound,
     InvalidSession,
     InvalidHandshake,
+    DatabaseError,
 }
 
 impl std::fmt::Display for Error {
@@ -34,6 +37,14 @@ impl std::fmt::Display for Error {
             Error::ParameterNotFound => write!(f, "Parameter not found"),
             Error::InvalidSession => write!(f, "Invalid session"),
             Error::InvalidHandshake => write!(f, "Invalid handshake"),
+            Error::DatabaseError => write!(f, "Database error"),
         }
     }
 }
+
+impl From<mongodb::error::Error> for Error {
+    fn from(e: mongodb::error::Error) -> Self {
+        println!("{e}");
+        Error::DatabaseError
+    }
+}