actionmailbox/app/models/action_mailbox/inbound_email.rb


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# frozen_string_literal: true

require "mail"

module ActionMailbox
  # The `InboundEmail` is an Active Record that keeps a reference to the raw email stored in Active Storage
  # and tracks the status of processing. By default, incoming emails will go through the following lifecycle:
  #
  # * Pending: Just received by one of the ingress controllers and scheduled for routing.
  # * Processing: During active processing, while a specific mailbox is running its #process method.
  # * Delivered: Successfully processed by the specific mailbox.
  # * Failed: An exception was raised during the specific mailbox's execution of the `#process` method.
  # * Bounced: Rejected processing by the specific mailbox and bounced to sender.
  #
  # Once the `InboundEmail` has reached the status of being either `delivered`, `failed`, or `bounced`,
  # it'll count as having been `#processed?`. Once processed, the `InboundEmail` will be scheduled for
  # automatic incineration at a later point.
  #
  # When working with an `InboundEmail`, you'll usually interact with the parsed version of the source,
  # which is available as a `Mail` object from `#mail`. But you can also access the raw source directly
  # using the `#source` method.
  #
  # Examples:
  #
  #   inbound_email.mail.from # => 'david@loudthinking.com'
  #   inbound_email.source # Returns the full rfc822 source of the email as text
  class InboundEmail < ActiveRecord::Base
    self.table_name = "action_mailbox_inbound_emails"

    include Incineratable, MessageId, Routable

    has_one_attached :raw_email
    enum status: %i[ pending processing delivered failed bounced ]

    def mail
      @mail ||= Mail.from_source(source)
    end

    def source
      @source ||= raw_email.download
    end

    def processed?
      delivered? || failed? || bounced?
    end
  end
end

ActiveSupport.run_load_hooks :action_mailbox_inbound_email, ActionMailbox::InboundEmail