Merge branch 'feature/fake-statuses' into 'develop'

Add fake status submit

See merge request pleroma/pleroma!995

docs/api/differences_in_mastoapi_responses.md

@@ -44,3 +44,9 @@ Has these additional fields under the `pleroma` object:
 Has these additional fields under the `pleroma` object:
 
 - `is_seen`: true if the notification was read by the user
+
+## POST `/api/v1/statuses`
+
+Additional parameters can be added to the JSON body:
+
+- `preview`: boolean, if set to `true` the post won't be actually posted, but the status entitiy would still be rendered back. This could be useful for previewing rich text/custom emoji, for example.

lib/pleroma/html.ex

@@ -28,9 +28,13 @@ def filter_tags(html, scrubber), do: Scrubber.scrub(html, scrubber)
   def filter_tags(html), do: filter_tags(html, nil)
   def strip_tags(html), do: Scrubber.scrub(html, Scrubber.StripTags)
 
+  # TODO: rename object to activity because that's what it is really working with
   def get_cached_scrubbed_html_for_object(content, scrubbers, object, module) do
     key = "#{module}#{generate_scrubber_signature(scrubbers)}|#{object.id}"
-    Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
+
+    Cachex.fetch!(:scrubber_cache, key, fn _key ->
+      ensure_scrubbed_html(content, scrubbers, object.data["object"]["fake"] || false)
+    end)
   end
 
   def get_cached_stripped_html_for_object(content, object, module) do
@@ -44,11 +48,20 @@ def get_cached_stripped_html_for_object(content, object, module) do
 
   def ensure_scrubbed_html(
         content,
-        scrubbers
+        scrubbers,
+        false = _fake
       ) do
     {:commit, filter_tags(content, scrubbers)}
   end
 
+  def ensure_scrubbed_html(
+        content,
+        scrubbers,
+        true = _fake
+      ) do
+    {:ignore, filter_tags(content, scrubbers)}
+  end
+
   defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
     generate_scrubber_signature([scrubber])
   end

lib/pleroma/object.ex

@@ -44,6 +44,11 @@ def get_by_ap_id(ap_id) do
   # Use this whenever possible, especially when walking graphs in an O(N) loop!
   def normalize(%Activity{object: %Object{} = object}), do: object
 
+  # A hack for fake activities
+  def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}) do
+    %Object{id: "pleroma:fake_object_id", data: data}
+  end
+
   # Catch and log Object.normalize() calls where the Activity's child object is not
   # preloaded.
   def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}) do

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -113,15 +113,15 @@ def decrease_replies_count_if_reply(%Object{
 
   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 @@ def insert(map, local \\ true) when is_map(map) 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 @@ def stream_out(activity) 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 @@ def create(%{to: to, actor: actor, context: context, object: object} = params) d
              %{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
 

lib/pleroma/web/activity_pub/utils.ex

@@ -175,18 +175,26 @@ def maybe_federate(_), do: :ok
   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
+  def lazy_put_activity_defaults(map, fake \\ false) do
+    map =
+      unless fake do
         %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
 
-    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)
+      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 @@ def lazy_put_activity_defaults(map) 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)

lib/pleroma/web/common_api/common_api.ex

@@ -172,13 +172,16 @@ def post(user, %{"status" => status} = data) do
              end)
            ) do
       res =
-        ActivityPub.create(%{
+        ActivityPub.create(
+          %{
             to: to,
             actor: user,
             context: context,
             object: object,
             additional: %{"cc" => cc, "directMessage" => visibility == "direct"}
-        })
+          },
+          data["preview"] || false
+        )
 
       res
     end

test/web/mastodon_api/mastodon_api_controller_test.exs

@@ -143,6 +143,55 @@ test "posting a sensitive status", %{conn: conn} do
     assert Activity.get_by_id(id)
   end
 
+  test "posting a fake status", %{conn: conn} do
+    user = insert(:user)
+
+    real_conn =
+      conn
+      |> assign(:user, user)
+      |> post("/api/v1/statuses", %{
+        "status" =>
+          "\"Tenshi Eating a Corndog\" is a much discussed concept on /jp/. The significance of it is disputed, so I will focus on one core concept: the symbolism behind it"
+      })
+
+    real_status = json_response(real_conn, 200)
+
+    assert real_status
+    assert Object.get_by_ap_id(real_status["uri"])
+
+    real_status =
+      real_status
+      |> Map.put("id", nil)
+      |> Map.put("url", nil)
+      |> Map.put("uri", nil)
+      |> Map.put("created_at", nil)
+      |> Kernel.put_in(["pleroma", "conversation_id"], nil)
+
+    fake_conn =
+      conn
+      |> assign(:user, user)
+      |> post("/api/v1/statuses", %{
+        "status" =>
+          "\"Tenshi Eating a Corndog\" is a much discussed concept on /jp/. The significance of it is disputed, so I will focus on one core concept: the symbolism behind it",
+        "preview" => true
+      })
+
+    fake_status = json_response(fake_conn, 200)
+
+    assert fake_status
+    refute Object.get_by_ap_id(fake_status["uri"])
+
+    fake_status =
+      fake_status
+      |> Map.put("id", nil)
+      |> Map.put("url", nil)
+      |> Map.put("uri", nil)
+      |> Map.put("created_at", nil)
+      |> Kernel.put_in(["pleroma", "conversation_id"], nil)
+
+    assert real_status == fake_status
+  end
+
   test "posting a status with OGP link preview", %{conn: conn} do
     Pleroma.Config.put([:rich_media, :enabled], true)
     user = insert(:user)