fix bug and better return value on existing games

backend/src/auth.rs

@@ -71,7 +71,9 @@ pub async fn login(
     let req = request.into_inner();
     let users = user_list.lock().await;
 
-    if let Some(user) = users.iter().find(|u| u.person.name == req.username)
+    if let Some(user) = users
+        .iter()
+        .find(|u| u.person.name.to_lowercase() == req.username.to_lowercase())
         && bcrypt::verify(&req.password, &user.password_hash).unwrap_or(false)
     {
         let token = Uuid::new_v4().to_string();

backend/src/main.rs

@@ -78,14 +78,14 @@ async fn add_game(
     let mut games = game_list.lock().await;
     let mut game = game.into_inner();
 
-    if games.iter().any(|g| {
+    game.title = game.title.trim().to_string();
+
+    if let Some(existing) = games.iter().find(|g| {
         g.title == game.title || (g.remote_id == game.remote_id && g.source == game.source)
     }) {
-        return None;
+        return Some(existing.clone());
     }
 
-    game.title = game.title.trim().to_string();
-
     games.push(game.clone());
 
     games.sort_unstable_by(|g1, g2| g1.title.cmp(&g2.title));