Add public timeline TwAPI.

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -8,7 +8,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   def fetch_public_activities(opts \\ %{}) do
-    since_id = opts[:since_id] || 0
+    since_id = opts["since_id"] || 0
 
     query = from activity in Activity,
       where: fragment(~s(? @> '{"to": ["https://www.w3.org/ns/activitystreams#Public"]}'), activity.data),

lib/pleroma/web/router.ex

@@ -9,12 +9,19 @@ defmodule Pleroma.Web.Router do
 
   pipeline :api do
     plug :accepts, ["json"]
+    plug :fetch_session
+    plug Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Pleroma.Web.Router.user_fetcher/1, optional: true}
   end
 
   pipeline :authenticated_api do
     plug :accepts, ["json"]
     plug :fetch_session
-    plug Pleroma.Plugs.AuthenticationPlug, fetcher: &Pleroma.Web.Router.user_fetcher/1
+    plug Pleroma.Plugs.AuthenticationPlug, %{fetcher: &Pleroma.Web.Router.user_fetcher/1}
+  end
+
+  scope "/api", Pleroma.Web do
+    pipe_through :api
+    get "/statuses/public_timeline.json", TwitterAPI.Controller, :public_timeline
   end
 
   scope "/api", Pleroma.Web do

lib/pleroma/web/twitter_api/twitter_api.ex

@@ -21,8 +21,8 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
     ActivityPub.insert(activity)
   end
 
-  def fetch_public_statuses do
-    activities = ActivityPub.fetch_public_activities
+  def fetch_public_statuses(opts \\ %{}) do
+    activities = ActivityPub.fetch_public_activities(opts)
 
     Enum.map(activities, fn(activity) ->
       actor = get_in(activity.data, ["actor"])

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -16,6 +16,14 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
     |> json_reply(200, ActivityRepresenter.to_json(activity, %{user: user}))
   end
 
+  def public_timeline(conn, params) do
+    statuses = TwitterAPI.fetch_public_statuses(params)
+    {:ok, json} = Poison.encode(statuses)
+
+    conn
+    |> json_reply(200, json)
+  end
+
   defp json_reply(conn, status, json) do
     conn
     |> put_resp_content_type("application/json")