Delivery Method for Mailchimp STS and Amazon SES using Uakari

MailchimpDeliveryMethod

class MailchimpDeliveryMethod
  attr_accessor :settings

  def initialize(values = {})
    self.settings = {:track_opens => true,
                     :track_clicks => true
    }.merge!(values)
  end

  def deliver!(mail)
    message = {
        :track_opens => settings[:track_opens],
        :track_clicks => settings[:track_clicks],
        :tags => [Rails.env.to_s],
        :message => {
            :subject => mail.subject,
            :from_email => mail.from.first,
            :to_email => mail.to
        }
    }
    message[:reply_to] = mail.reply_to if mail.reply_to
    message[:from_name] = $1.strip if /(^.*)</.match(mail.header['from'].value)
    message[:message][:text] = body_text(mail) unless self.html?(mail)
    message[:message][:html] = body_html(mail) if self.html?(mail)

    Mailchimp::Service.send_email(message)
  end

  def html?(mail)
    mail.content_type && mail.content_type.include?('text/html')
  end

  def body_html(mail)
    if mail.html_part.nil?
      mail.body.to_s if self.html?(mail)
    else
      mail.html_part.body.to_s
    end
  end

  def body_text(mail)
    if mail.text_part.nil?
      mail.body.to_s
    else
      mail.text_part.body.to_s
    end
  end
end