Fix over limit email reccommendation

lib/workers/check_usage.ex

@@ -85,7 +85,7 @@ defmodule Plausible.Workers.CheckUsage do
   defp check_regular_subscriber(subscriber, billing_mod) do
     case check_pageview_limit(subscriber, billing_mod) do
       {:over_limit, {last_cycle, last_cycle_usage}} ->
-        suggested_plan = Plausible.Billing.Plans.suggested_plan(subscriber, last_cycle)
+        suggested_plan = Plausible.Billing.Plans.suggested_plan(subscriber, last_cycle_usage)
 
         template =
           PlausibleWeb.Email.over_limit_email(

test/workers/check_usage_test.exs

@@ -97,6 +97,32 @@ defmodule Plausible.Workers.CheckUsageTest do
     assert Repo.reload(user).grace_period.end_date == Timex.shift(Timex.today(), days: 7)
   end
 
+  test "reccommends a plan to upgrade to", %{
+    user: user
+  } do
+    billing_stub =
+      Plausible.Billing
+      |> stub(:last_two_billing_months_usage, fn _user -> {11_000, 11_000} end)
+      |> stub(:last_two_billing_cycles, fn _user ->
+        {Date.range(Timex.today(), Timex.today()), Date.range(Timex.today(), Timex.today())}
+      end)
+
+    insert(:subscription,
+      user: user,
+      paddle_plan_id: @paddle_id_10k,
+      last_bill_date: Timex.shift(Timex.today(), days: -1)
+    )
+
+    CheckUsage.perform(nil, billing_stub)
+
+    assert_delivered_email_matches(%{
+      html_body: html_body
+    })
+
+    # Should find 2 visiors
+    assert html_body =~ ~s(Based on that we recommend you select the 100k/mo plan.)
+  end
+
   describe "enterprise customers" do
     test "checks billable pageview usage for enterprise customer, sends usage information to enterprise@plausible.io",
          %{