ministryofjustice/prison-visits

class PrisonMailer < ActionMailer::Base
  include NoReply
  include Autoresponder
  include Addresses
  include EnsureQuotedPrintable
  include DateHelper

  after_action :do_not_send_to_prison, if: :smoke_test?

  add_template_helper(DateHelper)
  add_template_helper(ApplicationHelper)
  add_template_helper(VisitHelper)

  layout 'email'

  attr_reader :visit
  helper_method :visit

  def self.smtp_settings
    {
      address: ENV['GSI_SMTP_HOSTNAME'],
      port: ENV['GSI_SMTP_PORT'],
      domain: ENV['GSI_SMTP_DOMAIN'],
      enable_starttls_auto: true
    }
  end

  def booking_request_email(visit, token)
    @visit = visit
    user = visit.visitors.find(&:email).email
    @token = token
    booking_request(user)
  end

  # rubocop:disable Metrics/MethodLength
  def booking_receipt_email(visit, confirmation)
    @visit = visit
    @confirmation = confirmation

    if confirmation.slot_selected?
      @slot = visit.slots[confirmation.slot]
      mail(
        from: sender,
        to: recipient,
        subject: I18n.t(
          :subject_confirmation,
          scope: 'prison_mailer.booking_receipt_email',
          full_name: @visit.prisoner.full_name
        ),
        template_name: "booking_confirmation_email"
      )
    else
      mail(
        from: sender,
        to: recipient,
        subject: I18n.t(
          :subject_rejection,
          scope: 'prison_mailer.booking_receipt_email',
          full_name: @visit.prisoner.full_name
        ),
        template_name: "booking_rejection_email"
      )
    end
  end

  def booking_cancellation_receipt_email(visit)
    @visit = visit

    headers('X-Priority' => '1 (Highest)', 'X-MSMail-Priority' => 'High')
    mail(
      from: sender,
      to: recipient,
      subject: default_i18n_subject(
        full_name: @visit.prisoner.full_name,
        receipt_date: format_date_of_visit(first_date)
      )
    )
  end

  def sender
    noreply_address
  end

  def recipient
    prison_mailbox_email
  end

  private

  def booking_request(user)
    mail(
      from: sender,
      reply_to: user,
      to: recipient,
      subject: default_i18n_subject(
        full_name: @visit.prisoner.full_name,
        request_date: format_date_of_visit(first_date)
      )
    )
  end

  def do_not_send_to_prison
    message.to = visitors_email_address
    message.delivery_method.settings.
      merge!(Rails.configuration.action_mailer.smtp_settings)
  end

  def smoke_test?
    visit && MailUtilities::SmokeTestEmailCheck.new(visitors_email_address).
      matches?
  end

  def visitors_email_address
    visit.visitors.first.email
  end

  def first_date
    @visit.slots.first.date
  end
end