utilize Rails callbacks to trap issues created/saved via mail (refs #5)

init.rb

@@ -8,7 +8,7 @@ Redmine::Plugin.register :redmine_mattermost do
 	url 'https://github.com/altsol/redmine_mattermost'
 	author_url 'http://altsol.gr'
 	description 'Mattermost chat integration'
-	version '0.2'
+	version '0.3'
 
 	requires_redmine :version_or_higher => '2.0.0'
 
@@ -22,3 +22,10 @@ Redmine::Plugin.register :redmine_mattermost do
 		},
 		:partial => 'settings/mattermost_settings'
 end
+
+ActionDispatch::Callbacks.to_prepare do
+	require_dependency 'issue'
+	unless Issue.included_modules.include? RedmineMattermost::IssuePatch
+		Issue.send(:include, RedmineMattermost::IssuePatch)
+	end
+end

lib/redmine_mattermost/issue_patch.rb

@@ -0,0 +1,35 @@
+module RedmineMattermost
+  module IssuePatch
+    def self.included(base) # :nodoc:
+      base.extend(ClassMethods)
+      base.send(:include, InstanceMethods)
+
+      base.class_eval do
+        unloadable # Send unloadable so it will not be unloaded in development
+        after_create :create_from_issue
+        after_save :save_from_issue
+      end
+    end
+    
+    module ClassMethods
+    end
+    
+    module InstanceMethods
+      def create_from_issue
+        self.reload
+        @create_already_fired = true
+        Redmine::Hook.call_hook(:redmine_mattermost_issues_new_after_save, { :issue => self})
+        return true
+      end
+
+      def save_from_issue
+        self.reload
+        if not @create_already_fired
+          Redmine::Hook.call_hook(:redmine_mattermost_issues_edit_after_save, { :issue => self, :journal => self.current_journal})
+        end
+        return true
+      end
+
+    end    
+  end
+end

lib/redmine_mattermost/listener.rb

@@ -1,7 +1,7 @@
 require 'httpclient'
 
 class MattermostListener < Redmine::Hook::Listener
-	def controller_issues_new_after_save(context={})
+	def redmine_mattermost_issues_new_after_save(context={})
 		issue = context[:issue]
 
 		channel = channel_for_project issue.project
@@ -37,7 +37,7 @@ class MattermostListener < Redmine::Hook::Listener
 		speak msg, channel, attachment, url
 	end
 
-	def controller_issues_edit_after_save(context={})
+	def redmine_mattermost_issues_edit_after_save(context={})
 		issue = context[:issue]
 		journal = context[:journal]