Add subscription info to admin panel

lib/plausible/auth/user_admin.ex

@@ -1,6 +1,10 @@
 defmodule Plausible.Auth.UserAdmin do
   use Plausible.Repo
 
+  def custom_index_query(_conn, _schema, query) do
+    from(r in query, preload: [:subscription])
+  end
+
   def form_fields(_) do
     [
       name: nil,
@@ -13,10 +17,32 @@ defmodule Plausible.Auth.UserAdmin do
     [
       name: nil,
       email: nil,
-      email_verified: nil,
       trial_expiry_date: nil,
-      inserted_at: nil,
-      last_seen: nil
+      subscription_tier: %{value: &subscription_tier/1},
+      subscription_status: %{value: &subscription_status/1}
     ]
   end
+
+  defp subscription_tier(user) do
+    if user.subscription && user.subscription.status == "active" do
+      quota = PlausibleWeb.AuthView.subscription_quota(user.subscription)
+      interval = PlausibleWeb.AuthView.subscription_interval(user.subscription)
+      "#{quota} (#{interval})"
+    else
+      "--"
+    end
+  end
+
+  defp subscription_status(user) do
+    cond do
+      user.subscription ->
+        PlausibleWeb.AuthView.present_subscription_status(user.subscription.status)
+
+      Plausible.Billing.on_trial?(user) ->
+        "On trial"
+
+      true ->
+        "Trial expired"
+    end
+  end
 end