osem-fcy/app/mailers/mailbot.rb

class Mailbot < ActionMailer::Base
  def registration_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.registration_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.registration_body))
  end

  def acceptance_mail(event)
    conference = event.program.conference

    mail(to: event.submitter.email,
         from: conference.contact.email,
         subject: conference.email_settings.accepted_subject,
         body: conference.email_settings.generate_event_mail(event, conference.email_settings.accepted_body))
  end

  def rejection_mail(event)
    conference = event.program.conference

    mail(to: event.submitter.email,
         from: conference.contact.email,
         subject: conference.email_settings.rejected_subject,
         body: conference.email_settings.generate_event_mail(event, conference.email_settings.rejected_body))
  end

  def confirm_reminder_mail(event)
    conference = event.program.conference

    mail(to: event.submitter.email,
         from: conference.contact.email,
         subject: conference.email_settings.confirmed_without_registration_subject,
         body: conference.email_settings.generate_event_mail(event,
                                                             conference.email_settings.confirmed_without_registration_body))
  end

  def conference_date_update_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.conference_dates_updated_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.conference_dates_updated_body))
  end

  def conference_registration_date_update_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.conference_registration_dates_updated_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.conference_registration_dates_updated_body))
  end

  def conference_venue_update_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.venue_updated_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.venue_updated_body))
  end

  def conference_schedule_update_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.program_schedule_public_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.program_schedule_public_body))
  end

  def conference_cfp_update_mail(conference, user)
    mail(to: user.email,
         from: conference.contact.email,
         subject: conference.email_settings.cfp_dates_updated_subject,
         body: conference.email_settings.generate_email_on_conf_updates(conference,
                                                                        user,
                                                                        conference.email_settings.cfp_dates_updated_body))
  end

  def send_notification_email_for_comment(comment)
    @comment = comment
    @event = @comment.commentable
    @conference = @event.program.conference
    recipients = User.comment_notifiable(@conference) # with scope
    recipients.each do |user|
      @user = user
      mail(to: @user.email,
           from: @conference.contact.email,
           reply_to: @conference.contact.email,
           template_path: 'admin/emails',
           template_name: 'comment_template',
           subject: "New comment has been posted for #{@event.title}")
    end
  end
end