Add watchers from To and Cc fields in issue replies (#7017).

git-svn-id: http://svn.redmine.org/redmine/trunk@15092 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/mail_handler.rb

@@ -240,6 +240,9 @@ class MailHandler < ActionMailer::Base
     issue.safe_attributes = issue_attributes_from_keywords(issue)
     issue.safe_attributes = {'custom_field_values' => custom_field_values_from_keywords(issue)}
     journal.notes = cleaned_up_text_body
+
+    # add To and Cc as watchers before saving so the watchers can reply to Redmine
+    add_watchers(issue)
     add_attachments(issue)
     issue.save!
     if logger
@@ -314,8 +317,10 @@ class MailHandler < ActionMailer::Base
     if user.allowed_to?("add_#{obj.class.name.underscore}_watchers".to_sym, obj.project)
       addresses = [email.to, email.cc].flatten.compact.uniq.collect {|a| a.strip.downcase}
       unless addresses.empty?
-        User.active.having_mail(addresses).each do |w|
-          obj.add_watcher(w)
+        users = User.active.having_mail(addresses).to_a
+        users -= obj.watcher_users
+        users.each do |u|
+          obj.add_watcher(u)
         end
       end
     end

test/fixtures/mail_handler/issue_update_with_cc.eml

@@ -0,0 +1,19 @@
+Return-Path: <JSmith@somenet.foo>
+Received: from osiris ([127.0.0.1])
+	by OSIRIS
+	with hMailServer ; Sun, 22 Jun 2008 12:28:07 +0200
+Message-ID: <000501c8d452$a95cd7e0$0a00a8c0@osiris>
+In-Reply-To: <redmine.issue-2.20060719210421@osiris>
+From: "John Smith" <JSmith@somenet.foo>
+To: <redmine@somenet.foo>
+Cc: <dlopper@somenet.foo>
+Subject: Re: update to issue 2
+Date: Sun, 22 Jun 2008 12:28:07 +0200
+MIME-Version: 1.0
+Content-Type: text/plain;
+	format=flowed;
+	charset="iso-8859-1";
+	reply-type=original
+Content-Transfer-Encoding: 7bit
+
+An update to the issue by the sender.

test/unit/mail_handler_test.rb

@@ -265,7 +265,7 @@ class MailHandlerTest < ActiveSupport::TestCase
     end
   end
 
-  def test_add_issue_with_cc
+  def test_add_issue_should_add_cc_as_watchers
     issue = submit_email('ticket_with_cc.eml', :issue => {:project => 'ecookbook'})
     assert issue.is_a?(Issue)
     assert !issue.new_record?
@@ -813,6 +813,28 @@ class MailHandlerTest < ActiveSupport::TestCase
     assert_equal 'Normal', journal.issue.priority.name
   end
 
+  def test_update_issue_should_add_cc_as_watchers
+    Watcher.delete_all
+    issue = Issue.find(2)
+
+    assert_difference 'Watcher.count' do
+      assert submit_email('issue_update_with_cc.eml')
+    end
+    issue.reload
+    assert_equal 1, issue.watcher_user_ids.size
+    assert issue.watched_by?(User.find_by_mail('dlopper@somenet.foo'))
+  end
+
+  def test_update_issue_should_not_add_cc_as_watchers_if_already_watching
+    Watcher.delete_all
+    issue = Issue.find(2)
+    Watcher.create!(:watchable => issue, :user => User.find_by_mail('dlopper@somenet.foo'))
+
+    assert_no_difference 'Watcher.count' do
+      assert submit_email('issue_update_with_cc.eml')
+    end
+  end
+
   def test_replying_to_a_private_note_should_add_reply_as_private
     private_journal = Journal.create!(:notes => 'Private notes', :journalized => Issue.find(1), :private_notes => true, :user_id => 2)