Add conversation fetching to TwAPI controller.

lib/pleroma/web/router.ex

@@ -24,6 +24,7 @@ defmodule Pleroma.Web.Router do
     get "/statuses/public_timeline", TwitterAPI.Controller, :public_timeline
     get "/statuses/public_and_external_timeline", TwitterAPI.Controller, :public_timeline
     get "/statuses/show/:id", TwitterAPI.Controller, :fetch_status
+    get "/statusnet/conversation/:id", TwitterAPI.Controller, :fetch_conversation
   end
 
   scope "/api", Pleroma.Web do

lib/pleroma/web/twitter_api/twitter_api.ex

@@ -3,6 +3,8 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter
 
+  import Ecto.Query
+
   def create_status(user = %User{}, data = %{}) do
     date = DateTime.utc_now() |> DateTime.to_iso8601
 
@@ -55,6 +57,29 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
     |> activities_to_statuses(%{for: user})
   end
 
+  def fetch_conversation(user, id) do
+    query = from activity in Activity,
+      where: fragment("? @> ?", activity.data, ^%{ statusnetConversationId: id}),
+      limit: 1
+
+    with %Activity{} = activity <- Repo.one(query),
+         context <- activity.data["context"],
+         activities <- ActivityPub.fetch_activities_for_context(context),
+         statuses <- activities |> activities_to_statuses(%{for: user})
+    do
+      statuses
+    else e ->
+        IO.inspect(e)
+      []
+    end
+  end
+
+  def fetch_status(user, id) do
+    with %Activity{} = activity <- Repo.get(Activity, id) do
+      activity_to_status(activity, %{for: user})
+    end
+  end
+
   def follow(%User{} = follower, followed_id) do
     with %User{} = followed <- Repo.get(User, followed_id),
          { :ok, follower } <- User.follow(follower, followed)
@@ -95,10 +120,4 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
     user = Repo.get_by!(User, ap_id: actor)
     ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user}))
   end
-
-  def fetch_status(user, id) do
-    with %Activity{} = activity <- Repo.get(Activity, id) do
-      activity_to_status(activity, %{for: user})
-    end
-  end
 end

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -57,6 +57,15 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     |> json_reply(200, response)
   end
 
+  def fetch_conversation(%{assigns: %{user: user}} = conn, %{ "id" => id }) do
+    id = String.to_integer(id)
+    response = TwitterAPI.fetch_conversation(user, id) |> Poison.encode!
+
+    conn
+    |> json_reply(200, response)
+  end
+
+
   defp json_reply(conn, status, json) do
     conn
     |> put_resp_content_type("application/json")