clean up http.rs a little

src/http.rs

@@ -111,14 +111,7 @@ async fn endpoint_create_player(
 ) -> Result<Response<Full<Bytes>>> {
     let str = request.collect().await?.to_bytes();
     let Ok(res) = serde_json::from_slice::<CreatePlayerRequest>(&str[..]) else {
-        let payload = ErrorResponse {
+        return Ok(malformed_request());
-            code: errors::MALFORMED_REQUEST,
-            message: "The request payload contains incorrect JSON value",
-        }
-        .to_body();
-        let mut response = Response::new(payload);
-        *response.status_mut() = StatusCode::BAD_REQUEST;
-        return Ok(response);
     };
     storage.create_user(&res.name).await?;
     log::info!("Player {} created", res.name);
@@ -129,18 +122,11 @@ async fn endpoint_create_player(
 
 async fn endpoint_set_password(
     request: Request<hyper::body::Incoming>,
-    mut storage: Storage,
+    storage: Storage,
 ) -> Result<Response<Full<Bytes>>> {
     let str = request.collect().await?.to_bytes();
     let Ok(res) = serde_json::from_slice::<ChangePasswordRequest>(&str[..]) else {
-        let payload = ErrorResponse {
+        return Ok(malformed_request());
-            code: errors::MALFORMED_REQUEST,
-            message: "The request payload contains incorrect JSON value",
-        }
-        .to_body();
-        let mut response = Response::new(payload);
-        *response.status_mut() = StatusCode::BAD_REQUEST;
-        return Ok(response);
     };
     let verdict = Authenticator::new(&storage).set_password(&res.player_name, &res.password).await?;
     match verdict {
@@ -173,19 +159,28 @@ pub fn not_found() -> Response<Full<Bytes>> {
     response
 }
 
+fn malformed_request() -> Response<Full<Bytes>> {
+    let payload = ErrorResponse {
+        code: errors::MALFORMED_REQUEST,
+        message: "The request payload contains incorrect JSON value",
+    }
+    .to_body();
+
+    let mut response = Response::new(payload);
+    *response.status_mut() = StatusCode::BAD_REQUEST;
+    return response;
+}
+
 trait Or5xx {
     fn or5xx(self) -> Response<Full<Bytes>>;
 }
 impl Or5xx for Result<Response<Full<Bytes>>> {
     fn or5xx(self) -> Response<Full<Bytes>> {
-        match self {
+        self.unwrap_or_else(|e| {
-            Ok(e) => e,
-            Err(e) => {
             let mut response = Response::new(Full::new(e.to_string().into()));
             *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
             response
-            }
+        })
-        }
     }
 }