User profile and admin privileges

src/authentication.rs

@@ -1,3 +1,5 @@
+use std::fmt::Display;
+
 use crate::telemetry::spawn_blocking_with_tracing;
 use anyhow::Context;
 use argon2::{
@@ -138,6 +140,15 @@ pub enum Role {
     Writer,
 }
 
+impl Display for Role {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Role::Admin => write!(f, "admin"),
+            Role::Writer => write!(f, "writer"),
+        }
+    }
+}
+
 #[derive(Clone)]
 pub struct AuthenticatedUser {
     pub user_id: Uuid,