send_day_results.rb

class SendDayResults  
  ELIGIBLE_ROLES = {regular: 1, vip: 2}

  attr_reader :user

  def initialize(user)
    @user = user
  end

  def call
    GamesMailer.send_results_for_the_day(user) if user_eligible_for_notification?
  end

  def user_eligible_for_notification?
    user_is_in_eligable_role? && users_notifications_are_enabled? && user_has_participated_in_any_games?
  end

  def user_is_in_eligable_role?
    user.role == ELIGIBLE_ROLES[:regular] || user.role == ELIGIBLE_ROLES[:vip]
  end

  def users_notifications_are_enabled?
    user.settings.where(notifications_enabled: true).any?
  end

  def user_has_participated_in_any_games?
    user.games.where(participated: true).any?
  end
end