class CreateUser
  def initialize(users, user_factory, email_sender, response_factory)
    @users = user
    @user_factory = user_factory
    @email_sender = email_sender
    @response_factory = response_factory
  end

  def call(request)
    return @response_factory.email_taken if @user.exists?(email: request.email)

    user = @user_factory.new(request)

    @users.save(user)

    @email_sender.send(:confirm_email, user)

    @response_factory.success
  end
end

container = Container.new.config do |c|
  c.register(:users, User)
  c.regiser(:user_factory, User)
  c.register(:email_sender, EmailSender)
  c.register(:response_factory, CreateUser::Response)
  c.register(:create_user, CreateUser)
end

create_user = container.resolve(:create_user)

create_user.call(email: 'omar@email.com', password: 1234)