+
+ def follow_changeset(struct, params \\ %{}) do
+ struct
+ |> cast(params, [:following])
+ |> validate_required([:following])
+ end
+
+ def register_changeset(struct, params \\ %{}) do
+ changeset = struct
+ |> cast(params, [:bio, :email, :name, :nickname, :password, :password_confirmation])
+ |> validate_required([:bio, :email, :name, :nickname, :password, :password_confirmation])
+ |> validate_confirmation(:password)
+ |> unique_constraint(:email)
+ |> unique_constraint(:nickname)
+
+ if changeset.valid? do
+ hashed = Comeonin.Pbkdf2.hashpwsalt(changeset.changes[:password])
+ ap_id = User.ap_id(%User{nickname: changeset.changes[:nickname]})
+ followers = User.ap_followers(%User{nickname: changeset.changes[:nickname]})
+ changeset
+ |> put_change(:password_hash, hashed)
+ |> put_change(:ap_id, ap_id)
+ |> put_change(:following, [followers])
+ else
+ changeset
+ end
+ end
+
+ def follow(%User{} = follower, %User{} = followed) do
+ ap_followers = User.ap_followers(followed)
+ following = [ap_followers | follower.following]
+ |> Enum.uniq
+
+ follower
+ |> follow_changeset(%{following: following})
+ |> Repo.update
+ end
+
+ def unfollow(%User{} = follower, %User{} = followed) do
+ ap_followers = User.ap_followers(followed)
+ following = follower.following
+ |> List.delete(ap_followers)
+
+ follower
+ |> follow_changeset(%{following: following})
+ |> Repo.update
+ end
+
+ def following?(%User{} = follower, %User{} = followed) do
+ Enum.member?(follower.following, User.ap_followers(followed))
+ end
+
+ def get_cached_by_ap_id(ap_id) do
+ ConCache.get_or_store(:users, "ap_id:#{ap_id}", fn() ->
+ # Return false so the cache will store it.
+ Repo.get_by(User, ap_id: ap_id) || false
+ end)
+ end
+
+ def get_cached_by_nickname(nickname) do
+ ConCache.get_or_store(:users, "nickname:#{nickname}", fn() ->
+ Repo.get_by(User, nickname: nickname) || false
+ end)
+ end