Use utc_datetime in db schema

lib/pleroma/announcement.ex

@@ -16,11 +16,11 @@ defmodule Pleroma.Announcement do
 
   schema "announcements" do
     field(:data, :map)
-    field(:starts_at, :naive_datetime)
-    field(:ends_at, :naive_datetime)
+    field(:starts_at, :utc_datetime)
+    field(:ends_at, :utc_datetime)
     field(:rendered, :map)
 
-    timestamps()
+    timestamps(type: :utc_datetime)
   end
 
   def change(struct, params \\ %{}) do
@@ -155,6 +155,6 @@ def list_all_visible_when(time) do
   end
 
   def list_all_visible do
-    list_all_visible_when(NaiveDateTime.utc_now())
+    list_all_visible_when(DateTime.now("Etc/UTC") |> elem(1))
   end
 end

test/pleroma/web/admin_api/controllers/announcement_controller_test.exs

@@ -156,6 +156,25 @@ test "it updates a field", %{conn: conn} do
       assert NaiveDateTime.compare(new.starts_at, starts_at) == :eq
     end
 
+    test "it updates with time with utc timezone", %{conn: conn} do
+      %{id: id} = insert(:announcement)
+
+      now = DateTime.now("Etc/UTC") |> elem(1) |> DateTime.truncate(:second)
+      starts_at = DateTime.add(now, -10, :second)
+
+      _response =
+        conn
+        |> put_req_header("content-type", "application/json")
+        |> patch("/api/v1/pleroma/admin/announcements/#{id}", %{
+          starts_at: DateTime.to_iso8601(starts_at)
+        })
+        |> json_response_and_validate_schema(:ok)
+
+      new = Pleroma.Announcement.get_by_id(id)
+
+      assert DateTime.compare(new.starts_at, starts_at) == :eq
+    end
+
     test "it updates a data field", %{conn: conn} do
       %{id: id} = announcement = insert(:announcement, data: %{"all_day" => true})
 
@@ -230,5 +249,33 @@ test "it creates an announcement", %{conn: conn} do
       assert NaiveDateTime.compare(announcement.starts_at, starts_at) == :eq
       assert NaiveDateTime.compare(announcement.ends_at, ends_at) == :eq
     end
+
+    test "creating with time with utc timezones", %{conn: conn} do
+      content = "test post announcement api"
+
+      now = DateTime.now("Etc/UTC") |> elem(1) |> DateTime.truncate(:second)
+      starts_at = DateTime.add(now, -10, :second)
+      ends_at = DateTime.add(now, 10, :second)
+
+      response =
+        conn
+        |> put_req_header("content-type", "application/json")
+        |> post("/api/v1/pleroma/admin/announcements", %{
+          "content" => content,
+          "starts_at" => DateTime.to_iso8601(starts_at),
+          "ends_at" => DateTime.to_iso8601(ends_at),
+          "all_day" => true
+        })
+        |> json_response_and_validate_schema(:ok)
+
+      assert %{"content" => ^content, "all_day" => true} = response
+
+      announcement = Pleroma.Announcement.get_by_id(response["id"])
+
+      assert not is_nil(announcement)
+
+      assert DateTime.compare(announcement.starts_at, starts_at) == :eq
+      assert DateTime.compare(announcement.ends_at, ends_at) == :eq
+    end
   end
 end

test/pleroma/web/mastodon_api/controllers/announcement_controller_test.exs

@@ -23,6 +23,30 @@ test "it lists all announcements" do
       refute Map.has_key?(Enum.at(response, 0), "read")
     end
 
+    test "it returns time with utc timezone" do
+      start_time =
+        NaiveDateTime.utc_now()
+        |> NaiveDateTime.add(-999_999, :second)
+        |> NaiveDateTime.truncate(:second)
+
+      end_time =
+        NaiveDateTime.utc_now()
+        |> NaiveDateTime.add(999_999, :second)
+        |> NaiveDateTime.truncate(:second)
+
+      %{id: id} = insert(:announcement, %{starts_at: start_time, ends_at: end_time})
+
+      response =
+        build_conn()
+        |> get("/api/v1/announcements")
+        |> json_response_and_validate_schema(:ok)
+
+      assert [%{"id" => ^id}] = [announcement] = response
+
+      assert String.ends_with?(announcement["starts_at"], "Z")
+      assert String.ends_with?(announcement["ends_at"], "Z")
+    end
+
     test "it does not list announcements starting after current time" do
       time = NaiveDateTime.utc_now() |> NaiveDateTime.add(999_999, :second)
       insert(:announcement, starts_at: time)