fix invitations of new users when mail is disabled

If you add a new user that has already been Invited to another
organization they will be Accepted automatically. This should not be
possible because they cannot be Confirmed until they have completed
their registration. It is also not necessary because their invitation
will be accepted automatically once they register.

src/api/core/organizations.rs

@@ -600,11 +600,7 @@ async fn send_invite(org_id: String, data: JsonUpcase<InviteData>, headers: Admi
 
     for email in data.Emails.iter() {
         let email = email.to_lowercase();
-        let mut user_org_status = if CONFIG.mail_enabled() {
+        let mut user_org_status = UserOrgStatus::Invited as i32;
-            UserOrgStatus::Invited as i32
-        } else {
-            UserOrgStatus::Accepted as i32 // Automatically mark user as accepted if no email invites
-        };
         let user = match User::find_by_mail(&email, &conn).await {
             None => {
                 if !CONFIG.invitations_allowed() {
@@ -622,13 +618,16 @@ async fn send_invite(org_id: String, data: JsonUpcase<InviteData>, headers: Admi
 
                 let mut user = User::new(email.clone());
                 user.save(&conn).await?;
-                user_org_status = UserOrgStatus::Invited as i32;
                 user
             }
             Some(user) => {
                 if UserOrganization::find_by_user_and_org(&user.uuid, &org_id, &conn).await.is_some() {
                     err!(format!("User already in organization: {}", email))
                 } else {
+                    // automatically accept existing users if mail is disabled
+                    if !CONFIG.mail_enabled() && !user.password_hash.is_empty() {
+                        user_org_status = UserOrgStatus::Accepted as i32;
+                    }
                     user
                 }
             }