# frozen_string_literal: true

module ConditionalUserMailer

  # Executes a given block passed if the recipient user has the preference
  # email key enabled
  #
  # @param recipients {User | Enumerable } User object or any object that
  # includes Enumerable class
  #
  # @param key {String} - A key (dot notation) whose value is true/false and
  # belongs to prefences.email (see config/branding.yml)
  #
  # Returns true or false
  def deliver_if(recipients: [], key:, &block)
    return false unless block_given?

    Array(recipients).each do |recipient|
      email_hash = recipient.get_preferences('email').with_indifferent_access
      preference_value = !!email_hash.dig(*key.to_s.split('.'))
      block.call(recipient) if preference_value
    end

    true
  end

end