User deletion: Remove relationships.

lib/pleroma/user.ex

@@ -339,4 +339,19 @@ def deactivate (%User{} = user) do
     cs = User.info_changeset(user, %{info: new_info})
     Repo.update(cs)
   end
+
+  def delete (%User{} = user) do
+    {:ok, user} = User.deactivate(user)
+
+    # Remove all relationships
+    {:ok, followers } = User.get_followers(user)
+    followers
+    |> Enum.each(fn (follower) -> User.unfollow(follower, user) end)
+
+    {:ok, friends} = User.get_friends(user)
+    friends
+    |> Enum.each(fn (followed) -> User.unfollow(user, followed) end)
+
+    :ok
+  end
 end

test/user_test.exs

@@ -339,4 +339,33 @@ test ".deactivate deactivates a user" do
     {:ok, user} = User.deactivate(user)
     assert true == user.info["deactivated"]
   end
+
+  test ".delete deactivates a user, all follow relationships and all create activities" do
+    user = insert(:user)
+    followed = insert(:user)
+    follower = insert(:user)
+
+    {:ok, user} = User.follow(user, followed)
+    {:ok, follower} = User.follow(follower, user)
+
+    {:ok, activity} = CommonAPI.post(user, %{"status" => "2hu"})
+    {:ok, activity_two} = CommonAPI.post(follower, %{"status" => "3hu"})
+
+    {:ok, _, _} = CommonAPI.favorite(activity_two.id, user)
+    {:ok, _, _} = CommonAPI.favorite(activity.id, follower)
+    {:ok, _, _} = CommonAPI.repeat(activity.id, follower)
+
+    :ok = User.delete(user)
+
+    followed = Repo.get(User, followed.id)
+    follower = Repo.get(User, follower.id)
+    user = Repo.get(User, user.id)
+
+    assert user.info["deactivated"]
+
+    refute User.following?(user, followed)
+    refute User.following?(followed, follower)
+
+    # TODO: check for activities.
+  end
 end