Delegate :superadmin check to get_for_user/3

I'll do props settings separately, it's work in progress
in a branch on top of this one already. cc @ukutaht

lib/plausible/sites.ex

@@ -8,6 +8,10 @@ defmodule Plausible.Sites do
     Repo.get_by(Site, domain: domain)
   end
 
+  def get_by_domain!(domain) do
+    Repo.get_by!(Site, domain: domain)
+  end
+
   def create(user, params) do
     site_changeset = Site.changeset(%Site{}, params)
 
@@ -93,11 +97,25 @@ defmodule Plausible.Sites do
     base <> domain <> "?auth=" <> link.slug
   end
 
-  def get_for_user!(user_id, domain, roles \\ [:owner, :admin, :viewer]),
-    do: Repo.one!(get_for_user_q(user_id, domain, roles))
+  def get_for_user!(user_id, domain, roles \\ [:owner, :admin, :viewer]) do
+    if :superuser in roles and Plausible.Auth.is_super_admin?(domain) do
+      get_by_domain!(domain)
+    else
+      user_id
+      |> get_for_user_q(domain, List.delete(roles, :superadmin))
+      |> Repo.one!()
+    end
+  end
 
-  def get_for_user(user_id, domain, roles \\ [:owner, :admin, :viewer]),
-    do: Repo.one(get_for_user_q(user_id, domain, roles))
+  def get_for_user(user_id, domain, roles \\ [:owner, :admin, :viewer]) do
+    if :superuser in roles and Plausible.Auth.is_super_admin?(domain) do
+      get_by_domain(domain)
+    else
+      user_id
+      |> get_for_user_q(domain, List.delete(roles, :superadmin))
+      |> Repo.one()
+    end
+  end
 
   defp get_for_user_q(user_id, domain, roles) do
     from(s in Site,

lib/plausible_web/live/funnel_settings.ex

@@ -16,12 +16,7 @@ defmodule PlausibleWeb.Live.FunnelSettings do
       ) do
     true = Plausible.Funnels.enabled_for?("user:#{user_id}")
 
-    site =
-      if Plausible.Auth.is_super_admin?(user_id) do
-        Sites.get_by_domain(domain)
-      else
-        Sites.get_for_user!(user_id, domain, [:owner, :admin])
-      end
+    site = Sites.get_for_user!(user_id, domain, [:owner, :admin, :superadmin])
 
     funnels = Funnels.list(site)
     goal_count = Goals.count(site)

lib/plausible_web/live/goal_settings.ex

@@ -14,12 +14,7 @@ defmodule PlausibleWeb.Live.GoalSettings do
         %{"site_id" => _site_id, "domain" => domain, "current_user_id" => user_id},
         socket
       ) do
-    site =
-      if Plausible.Auth.is_super_admin?(user_id) do
-        Sites.get_by_domain(domain)
-      else
-        Sites.get_for_user!(user_id, domain, [:owner, :admin])
-      end
+    site = Sites.get_for_user!(user_id, domain, [:owner, :admin, :superadmin])
 
     goals = Goals.for_site(site, preload_funnels?: true)