Put new sites list logic behind a feature flag

lib/plausible/sites.ex

@@ -71,10 +71,21 @@ defmodule Plausible.Sites do
     )
   end
 
-  defdelegate list(user, pagination_params, opts \\ []), to: Plausible.Teams.Sites
+  def list(user, pagination_params, opts \\ []) do
+    if Plausible.Teams.read_team_schemas?(user) do
+      Plausible.Teams.Sites.list(user, pagination_params, opts)
+    else
+      old_list(user, pagination_params, opts)
+    end
+  end
 
-  defdelegate list_with_invitations(user, pagination_params, opts \\ []),
-    to: Plausible.Teams.Sites
+  def list_with_invitations(user, pagination_params, opts \\ []) do
+    if Plausible.Teams.read_team_schemas?(user) do
+      Plausible.Teams.Sites.list_with_invitations(user, pagination_params, opts)
+    else
+      old_list_with_invitations(user, pagination_params, opts)
+    end
+  end
 
   @spec old_list(Auth.User.t(), map(), [list_opt()]) :: Scrivener.Page.t()
   def old_list(user, pagination_params, opts \\ []) do

lib/plausible/teams.ex

@@ -8,6 +8,10 @@ defmodule Plausible.Teams do
   alias __MODULE__
   alias Plausible.Repo
 
+  def read_team_schemas?(user) do
+    FunWithFlags.enabled?(:read_team_schemas, for: user)
+  end
+
   def with_subscription(team) do
     Repo.preload(team, subscription: last_subscription_query())
   end

test/test_helper.exs

@@ -13,6 +13,8 @@ else
   FunWithFlags.disable(:experimental_reduced_joins)
 end
 
+FunWithFlags.enable(:read_team_schemas)
+
 Ecto.Adapters.SQL.Sandbox.mode(Plausible.Repo, :manual)
 
 # warn about minio if it's included in tests but not running