Simple new emails parcer with IMAP for rails with gem 'mail'

recieve_recent.rb

# frozen_string_literal: true

class Mails::ReceiveRecent
  def call
    client = Mails::SetClient.new.call
    receive_messages(client)
  end

  private

  def receive_messages(client)
    client.select('inbox')

    messages = []
    client.search(['not', 'seen']).each do |message_id|
      msg = client.fetch(message_id, 'RFC822')[0].attr['RFC822']
      mail = Mail.read_from_string(msg)

      messages << create_message(mail, message_id)
      set_message_to_seen(client, message_id)
    end

    messages
  end

  def create_message(mail, message_id)
    body = form_body_message(mail)
    author_name = set_author_name(mail)
    subject = mail.subject

    Message.create!(
      author_name: author_name,
      body: body,
      subject: subject,
      email: mail.from.first,
      message_id: message_id
    )
  end

  def form_body_message(mail)
    body = mail.body.encoding == 'base64' ? Base64.decode64(mail.body.encoded) : mail.body.encoded

    Nokogiri::HTML(body).text
  end

  def set_author_name(mail)
    mail[:from].display_names.first || mail.from.first.split('@').first
  end

  def set_message_to_seen(client, message_id)
    client.store(message_id, '+FLAGS', [:seen])
  end
end