added support for email notifications of ticket changes

2 files changed, 82 insertions, 0 deletions

diff --git a/engines/support/app/mailers/.gitkeep b/engines/support/app/mailers/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/engines/support/app/mailers/.gitkeep
diff --git a/engines/support/app/mailers/ticket_mailer.rb b/engines/support/app/mailers/ticket_mailer.rb
new file mode 100644
index 0000000..9a83345
--- /dev/null
+++ b/engines/support/app/mailers/ticket_mailer.rb
@@ -0,0 +1,82 @@
+class TicketMailer < ActionMailer::Base
+
+  helper :ticket_i18n
+
+  def self.send_notice(ticket, comment, url)
+    reply_recipients(ticket, comment.user).each do |email, key|
+      TicketMailer.notice(ticket, comment, url, email, key).deliver
+    end
+  end
+
+  #
+  # ticket - the ticket in question
+  # author - user who created last comment
+  # url - url of the ticket
+  # email - email to send reply notice to
+  # key - public key for email
+  #
+  # TODO: OpenPGP encrypt email to the public key.
+  #
+  def notice(ticket, comment, url, email, key)
+    @url = url
+    @email = email
+    @key = key
+    mail({
+      :reply_to  => reply_to_address,
+      :subject   => "Re: [#{ticket.id}] #{ticket.subject}",
+      :to        => email,
+      :from      => from_address(ticket, comment)
+    })
+  end
+
+  private
+
+  #
+  # I am not sure what makes the most sense here. For now, since we do not
+  # include any reply text in the notification email, it makes sense to make
+  # the from address be the robot, not the user.
+  #
+  def from_address(ticket, comment)
+    if true
+      reply_to_address
+    else
+      from_name = if comment.user.present?
+        comment.user.login
+      elsif ticket.created_by.present?
+        ticket.created_by_user.login
+      else
+        I18n.t(:anonymous)
+      end
+      "%s <%s>" % [from_name, reply_to_address]
+    end
+  end
+
+  # TODO: change me to support virtual domains
+  def reply_to_address
+    [APP_CONFIG[:mailer][:from_address], APP_CONFIG[:domain]].join('@')
+  end
+
+  #
+  # returns a hash of {'email' => 'public key'}, where key might be nil.
+  #
+  def self.reply_recipients(ticket, author)
+    recipients = {}
+    ticket.comments.each do |comment|
+      user = comment.posted_by_user
+      if user && (author.nil? || user.id != author.id)
+        if user.email
+          recipients[user.identity.address] = (user.identity.keys[:pgp] if user.identity.keys[:pgp].present?)
+        end
+        if user.contact_email.present?
+          recipients[user.contact_email] = (user.contact_email_key if user.contact_email_key.present?)
+        end
+      end
+    end
+    if author && author.is_admin? && ticket.email.present?
+      recipients[ticket.email] = nil
+    end
+    logger.info { "emailing reply regarding ticket #{ticket.id} to #{recipients.keys.join(', ')}" }
+    recipients
+  end
+
+end