good structure

src/methods/set_cloak.rs

@@ -0,0 +1,20 @@
+use mongodb::bson::doc;
+
+use crate::response::{Response, Result};
+
+use super::Session;
+
+pub fn set_cloak(session: &Session, cloak: String) -> Result {
+    session.database.players.update_one(
+        doc! {
+            "uuid": session.player.id.clone(),
+        },
+        doc! {
+            "$set": {
+                "cloak": cloak,
+            },
+        },
+    ).run()?;
+
+    Ok(Response::Success)
+}