user can add player while voting

src/main.rs

@@ -391,14 +391,19 @@ async fn post_player(req: Request<Incoming>, db: Arc<Mutex<SqlitePool>>) -> Resu
     let name = data.get("name").unwrap().as_str().unwrap();
     let pool = db.clone().lock().unwrap().clone();
     let mut conn = pool.acquire().await.unwrap();
-    let r = sqlx::query!(r#"INSERT INTO players (name) VALUES (?1)"#, data).execute(&mut *conn).await;
+    if let Ok(Some(player)) = sqlx::query!(r#"SELECT * FROM players WHERE name = ?1"#, name).fetch_optional(&pool).await {
+        let player = Player{id: player.id, name: player.name};
+        return Ok(Response::builder().body(Body::new(serde_json::to_string(&player).unwrap())).unwrap());
+    }
+    let r = sqlx::query!(r#"INSERT INTO players (name) VALUES (?1) RETURNING id"#, name).fetch_one(&mut *conn).await;
     if r.is_err() {
         return Ok(Response::builder()
             .status(StatusCode::INTERNAL_SERVER_ERROR)
             .body(Body::Empty)
             .unwrap());
     }
-    ok().await
+    let player = Player{id: r.unwrap().id, name: name.to_string()};
+    Ok(Response::builder().body(Body::new(serde_json::to_string(&player).unwrap())).unwrap())
 }
 
 async fn post_admin(