add: great post average

crates/app/src/routes/api/v1/auth/profile.rs

@@ -645,3 +645,33 @@ pub async fn post_to_socket_request(
         payload: (),
     })
 }
+
+/// Calculate the user's great post average.
+pub async fn get_user_gpa_request(
+    jar: CookieJar,
+    Path(id): Path<usize>,
+    Extension(data): Extension<State>,
+) -> impl IntoResponse {
+    let data = &(data.read().await).0;
+    let user = match get_user_from_token!(jar, data) {
+        Some(ua) => ua,
+        None => return Json(Error::NotAllowed.into()),
+    };
+
+    if !user.permissions.check(FinePermission::MANAGE_USERS) {
+        return Json(Error::NotAllowed.into());
+    }
+
+    let gpa = data.calculate_user_gpa(id).await;
+    return Json(ApiReturn {
+        ok: true,
+        message: if gpa >= 3 {
+            "cool".to_string()
+        } else if gpa >= 4 {
+            "extraordinary".to_string()
+        } else {
+            "ok".to_string()
+        },
+        payload: Some(gpa),
+    });
+}