3 files changed, 66 insertions, 25 deletions

diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 6e1ed7ec9..f217e7bac 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -113,15 +113,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   def decrease_replies_count_if_reply(_object), do: :noop
 
-  def insert(map, local \\ true) when is_map(map) do
+  def insert(map, local \\ true, fake \\ false) when is_map(map) do
     with nil <- Activity.normalize(map),
-         map <- lazy_put_activity_defaults(map),
+         map <- lazy_put_activity_defaults(map, fake),
          :ok <- check_actor_is_active(map["actor"]),
          {_, true} <- {:remote_limit_error, check_remote_limit(map)},
          {:ok, map} <- MRF.filter(map),
+         {recipients, _, _} = get_recipients(map),
+         {:fake, false, map, recipients} <- {:fake, fake, map, recipients},
          {:ok, object} <- insert_full_object(map) do
-      {recipients, _, _} = get_recipients(map)
-
       {:ok, activity} =
         Repo.insert(%Activity{
           data: map,
@@ -146,8 +146,23 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       stream_out(activity)
       {:ok, activity}
     else
-      %Activity{} = activity -> {:ok, activity}
-      error -> {:error, error}
+      %Activity{} = activity ->
+        {:ok, activity}
+
+      {:fake, true, map, recipients} ->
+        activity = %Activity{
+          data: map,
+          local: local,
+          actor: map["actor"],
+          recipients: recipients,
+          id: "pleroma:fakeid"
+        }
+
+        Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
+        {:ok, activity}
+
+      error ->
+        {:error, error}
     end
   end
 
@@ -190,7 +205,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def create(%{to: to, actor: actor, context: context, object: object} = params) do
+  def create(%{to: to, actor: actor, context: context, object: object} = params, fake \\ false) do
     additional = params[:additional] || %{}
     # only accept false as false value
     local = !(params[:local] == false)
@@ -201,13 +216,17 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
              %{to: to, actor: actor, published: published, context: context, object: object},
              additional
            ),
-         {:ok, activity} <- insert(create_data, local),
+         {:ok, activity} <- insert(create_data, local, fake),
+         {:fake, false, activity} <- {:fake, fake, activity},
          _ <- increase_replies_count_if_reply(create_data),
          # Changing note count prior to enqueuing federation task in order to avoid
          # race conditions on updating user.info
          {:ok, _actor} <- increase_note_count_if_public(actor, activity),
          :ok <- maybe_federate(activity) do
       {:ok, activity}
+    else
+      {:fake, true, activity} ->
+        {:ok, activity}
     end
   end
 
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index 77841278a..81e17b9c1 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -175,18 +175,26 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   Adds an id and a published data if they aren't there,
   also adds it to an included object
   """
-  def lazy_put_activity_defaults(map) do
-    %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
-
+  def lazy_put_activity_defaults(map, fake \\ false) do
     map =
-      map
-      |> Map.put_new_lazy("id", &generate_activity_id/0)
-      |> Map.put_new_lazy("published", &make_date/0)
-      |> Map.put_new("context", context)
-      |> Map.put_new("context_id", context_id)
+      unless fake do
+        %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
+
+        map
+        |> Map.put_new_lazy("id", &generate_activity_id/0)
+        |> Map.put_new_lazy("published", &make_date/0)
+        |> Map.put_new("context", context)
+        |> Map.put_new("context_id", context_id)
+      else
+        map
+        |> Map.put_new("id", "pleroma:fakeid")
+        |> Map.put_new_lazy("published", &make_date/0)
+        |> Map.put_new("context", "pleroma:fakecontext")
+        |> Map.put_new("context_id", -1)
+      end
 
     if is_map(map["object"]) do
-      object = lazy_put_object_defaults(map["object"], map)
+      object = lazy_put_object_defaults(map["object"], map, fake)
       %{map | "object" => object}
     else
       map
@@ -196,7 +204,18 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Adds an id and published date if they aren't there.
   """
-  def lazy_put_object_defaults(map, activity \\ %{}) do
+  def lazy_put_object_defaults(map, activity \\ %{}, fake)
+
+  def lazy_put_object_defaults(map, activity, true = _fake) do
+    map
+    |> Map.put_new_lazy("published", &make_date/0)
+    |> Map.put_new("id", "pleroma:fake_object_id")
+    |> Map.put_new("context", activity["context"])
+    |> Map.put_new("fake", true)
+    |> Map.put_new("context_id", activity["context_id"])
+  end
+
+  def lazy_put_object_defaults(map, activity, _fake) do
     map
     |> Map.put_new_lazy("id", &generate_object_id/0)
     |> Map.put_new_lazy("published", &make_date/0)
diff --git a/lib/pleroma/web/common_api/common_api.ex b/lib/pleroma/web/common_api/common_api.ex
index 25b990677..2f82a32f3 100644
--- a/lib/pleroma/web/common_api/common_api.ex
+++ b/lib/pleroma/web/common_api/common_api.ex
@@ -172,13 +172,16 @@ defmodule Pleroma.Web.CommonAPI do
              end)
            ) do
       res =
-        ActivityPub.create(%{
-          to: to,
-          actor: user,
-          context: context,
-          object: object,
-          additional: %{"cc" => cc, "directMessage" => visibility == "direct"}
-        })
+        ActivityPub.create(
+          %{
+            to: to,
+            actor: user,
+            context: context,
+            object: object,
+            additional: %{"cc" => cc, "directMessage" => visibility == "direct"}
+          },
+          data["preview"] || false
+        )
 
       res
     end