class InMailbox < ApplicationMailbox
  def process

    email = Email.new(
      message_id: mail.message_id,
      subject: mail.subject,
      date: mail.date,
      to: mail.to,
      delivered_to: delivered_to(mail),
      from: mail.from,
      plain_body: text_plain_body(mail),
      headers: hashed_headers(mail),
      cron: sent_by_cron?(mail),
      mailing_list: mailing_list?(mail),
      clients: clients(mail),
      servers: servers(mail),
      tickets: tickets(mail)
    )

    repository = EmailRepository.new
    repository.save(email)
  rescue => ex
    binding.pry
  end

  def delivered_to(mail)
    header = mail.header["Delivered-To"]
    if header.present?
      if header.respond_to?(:map)
        header.map(&:value)
      else
        header.value
      end
    else
      mail.to
    end
  end

  def text_plain_body(mail)
    if mail.parts.present?
      mail.text_part.decoded
    else
      mail.decoded
    end
  end

  def hashed_headers(mail)
    mail.header.map { |h|
      {
        name:  h.name,
        value: h.value
      }
    }
  end

  def sent_by_cron?(mail)
    mail.subject.match?(/cron/i) \
    || mail.header["X-Cron-Env"].present?
  end
  def mailing_list?(mail)
    mail.header["List-Unsubscribe"].present?
  end

  def clients(mail)
    Array(mail.header["X-Client-ID"].value) if mail.header["X-Client-ID"].present?
  end

  def servers(mail)
    if mail.header["X-Server-Name"].present?
      Array(mail.header["X-Server-Name"].value)
    else
      matching_header = ["To", "Delivered-To", "From", "Subject"].detect { |header_name|
          address_match_evolix_net?(mail.header[header_name].value) if mail.header[header_name].present?
      }
      Array(extract_server_name_from_address(mail.header[matching_header].value)) if matching_header
    end
  end

  def tickets(mail)
    Array(mail.header["X-Ticket-ID"].value) if mail.header["X-Ticket-ID"].present?
  end

  def address_match_evolix_net?(address)
    address.match?(/@(.+)\.evolix\.net/i)
  end
  def extract_server_name_from_address(address)
    address.match(/@(.+)\.evolix\.net/i)[1]
  end

end