fix: last completed date

lib/putzplan/tasks/task.ex

@@ -9,13 +9,23 @@ defmodule Putzplan.Tasks.Task do
   end
 
   calculations do
+    calculate :last_completed,
+              :date,
+              expr(
+                fragment(
+                  "SELECT c.completion FROM \"completed_tasks\" AS c WHERE c.task_id = ? ORDER BY c.completion DESC LIMIT 1",
+                  id
+                ) || today()
+              )
+
     calculate :due,
               :date,
               expr(
                 fragment(
-                  "SELECT strftime('%F', ?)", # HACK: to cast to date
+                  # HACK: to cast to date
+                  "SELECT strftime('%F', ?)",
                   date_add(
-                    completed_tasks.completion || today(),
+                    last_completed,
                     repetition_days,
                     :day
                   )
@@ -29,9 +39,7 @@ defmodule Putzplan.Tasks.Task do
   end
 
   relationships do
-    has_many :completed_tasks, Putzplan.Tasks.CompletedTask do
-      sort [:completion]
-    end
+    has_many :completed_tasks, Putzplan.Tasks.CompletedTask
   end
 
   # Attributes are the simple pieces of data that exist on your resource

lib/putzplan_web/live/task_live/index.ex

@@ -65,7 +65,7 @@ defmodule PutzplanWeb.TaskLive.Index do
   def mount(_params, _session, socket) do
     {:ok,
      socket
-      |> stream(:tasks, Ash.read!(Putzplan.Tasks.Task, actor: socket.assigns[:current_user]) |> Ash.load!(:due))
+      |> stream(:tasks, Ash.read!(Putzplan.Tasks.Task, load: [:due], actor: socket.assigns[:current_user]))
      |> assign_new(:current_user, fn -> nil end)}
   end