Fix specs, add some user info.

lib/pleroma/user.ex

@@ -1,7 +1,8 @@
 defmodule Pleroma.User do
   use Ecto.Schema
   import Ecto.Changeset
-  alias Pleroma.{Repo, User}
+  import Ecto.Query
+  alias Pleroma.{Repo, User, Activity, Object}
 
   schema "users" do
     field :bio, :string
@@ -32,6 +33,22 @@ defmodule Pleroma.User do
     |> validate_required([:following])
   end
 
+  def user_info(%User{} = user) do
+    note_count_query = from a in Object,
+      where: fragment("? @> ?", a.data, ^%{actor: user.ap_id, type: "Note"}),
+      select: count(a.id)
+
+    follower_count_query = from u in User,
+      where: fragment("? @> ?", u.following, ^User.ap_followers(user)),
+      select: count(u.id)
+
+    %{
+      following_count: length(user.following),
+      note_count: Repo.one(note_count_query),
+      follower_count: Repo.one(follower_count_query)
+    }
+  end
+
   def register_changeset(struct, params \\ %{}) do
     changeset = struct
     |> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])

lib/pleroma/web/twitter_api/representers/user_representer.ex

@@ -15,6 +15,8 @@ defmodule Pleroma.Web.TwitterAPI.Representers.UserRepresenter do
       false
     end
 
+    user_info = User.user_info(user)
+
     map = %{
       "id" => user.id,
       "name" => user.name,
@@ -23,9 +25,9 @@ defmodule Pleroma.Web.TwitterAPI.Representers.UserRepresenter do
       "following" => following,
       # Fake fields
       "favourites_count" => 0,
-      "statuses_count" => 0,
-      "friends_count" => 0,
-      "followers_count" => 0,
+      "statuses_count" => user_info[:note_count],
+      "friends_count" => user_info[:following_count],
+      "followers_count" => user_info[:follower_count],
       "profile_image_url" => image,
       "profile_image_url_https" => image,
       "profile_image_url_profile_size" => image,