require 'action_mailer'

##
# Adds sending email through an ActiveRecord table as a delivery method for
# ActionMailer.
#
# == Converting to ActionMailer::ARMailer
#
# Go to your Rails project:
#
#   $ cd your_rails_project
#
# Create a new migration:
#
#   $ ar_sendmail --create-migration
#
# You'll need to redirect this into a file.  If you want a different name
# provide the --table-name option.
#
# Create a new model:
#
#   $ ar_sendmail --create-model
#
# You'll need to redirect this into a file.  If you want a different name
# provide the --table-name option.
#
# Change your email classes to inherit from ActionMailer::ARMailer instead of
# ActionMailer::Base:
#
#   --- app/model/emailer.rb.orig   2006-08-10 13:16:33.000000000 -0700
#   +++ app/model/emailer.rb        2006-08-10 13:16:43.000000000 -0700
#   @@ -1,4 +1,4 @@
#   -class Emailer < ActionMailer::Base
#   +class Emailer < ActionMailer::ARMailer
#   
#   def comment_notification(comment)
#     from comment.author.email
#
# You'll need to be sure to set the From address for your emails.  Something
# like:
#
#   def list_send(recipient)
#     from 'no_reply@example.com'
#     # ...
#
# Edit config/environment.rb and require ar_mailer.rb:
#
#  require 'action_mailer/ar_mailer'
#
# Edit config/environments/production.rb and set the delivery agent:
#
#   $ grep delivery_method config/environments/production.rb
#   config.action_mailer.delivery_method = :activerecord
#
# For Rails 1.x and older:
#
#   $ grep delivery_method config/environments/production.rb
#   ActionMailer::Base.delivery_method = :activerecord
#
# Run ar_sendmail:
#
#   $ ar_sendmail
#
# You can also run it from cron with -o, or as a daemon with -d.
#
# See <tt>ar_sendmail -h</tt> for full details.
#
# == Alternate Mail Storage
#
# If you want to set the ActiveRecord model that emails will be stored in,
# see ActionMailer::ARMailer::email_class=

class ActionMailer::ARMailer < ActionMailer::Base

  @email_class = nil

  ##
  # Current email class for deliveries.

  def self.email_class
    @email_class ||= Email
  end

  ##
  # Sets the email class for deliveries.

  def self.email_class=(klass)
    @email_class = klass
  end

  ##
  # Hack around class_inheritable_accessor being lame

  def self.view_paths # :nodoc:
    superclass.view_paths
  end

  ##
  # Hack around class_inheritable_accessor being lame

  def self.view_paths=(path) # :nodoc:
    superclass.view_paths = path
  end

  ##
  # Adds +mail+ to the Email table.  Only the first From address for +mail+ is
  # used.

  def perform_delivery_activerecord(mail)
    email_class = ActionMailer::ARMailer.email_class

    mail.destinations.each do |destination|
      email_class.create :mail => mail.encoded, :to => destination,
                         :from => mail.from.first
    end
  end

end