move managing events to own role

src/model/user.rs

@@ -850,6 +850,43 @@ impl<'r> FromRequest<'r> for VorstandUser {
         }
     }
 }
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct PlannedEventUser(pub(crate) User);
+
+impl Into<User> for PlannedEventUser {
+    fn into(self) -> User {
+        self.0
+    }
+}
+
+impl Deref for PlannedEventUser {
+    type Target = User;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[async_trait]
+impl<'r> FromRequest<'r> for PlannedEventUser {
+    type Error = LoginError;
+
+    async fn from_request(req: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
+        let db = req.rocket().state::<SqlitePool>().unwrap();
+        match User::from_request(req).await {
+            Outcome::Success(user) => {
+                if user.has_role(db, "planned_event").await {
+                    Outcome::Success(PlannedEventUser(user))
+                } else {
+                    Outcome::Error((Status::Forbidden, LoginError::NotACox))
+                }
+            }
+            Outcome::Error(f) => Outcome::Error(f),
+            Outcome::Forward(f) => Outcome::Forward(f),
+        }
+    }
+}
 #[cfg(test)]
 mod test {
     use std::collections::HashMap;