Merge branch 'add_user_expire_leave_event' into 'master'

Differentiate the expire from leave event

At the moment we cannot see whether a user left a project due to their
membership expiring or if they themselves opted to leave the project.
This adds a new event type that allows us to make this differentiation.
Note that is not really feasible to go back and reliably fix up the
previous events. As a result the events for previous expire removals
will remain the same however events of this nature going forward will be
correctly represented.

Closes #22611 

![Screen_Shot_2016-10-06_at_09.27.52](/uploads/e4de7bd2cdedc64a9b19e56fefa21314/Screen_Shot_2016-10-06_at_09.27.52.png)

See merge request !6717

4 files changed, 22 insertions, 3 deletions

diff --git a/app/models/concerns/expirable.rb b/app/models/concerns/expirable.rb
index be93435453b..b66ba08dc59 100644
--- a/app/models/concerns/expirable.rb
+++ b/app/models/concerns/expirable.rb
@@ -5,11 +5,15 @@ module Expirable
     scope :expired, -> { where('expires_at <= ?', Time.current) }
   end
 
+  def expired?
+    expires? && expires_at <= Time.current
+  end
+
   def expires?
     expires_at.present?
   end
 
   def expires_soon?
-    expires_at < 7.days.from_now
+    expires? && expires_at < 7.days.from_now
   end
 end
diff --git a/app/models/event.rb b/app/models/event.rb
index 0764cb8cabd..3993b35f96d 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -12,6 +12,7 @@ class Event < ActiveRecord::Base
   JOINED    = 8 # User joined project
   LEFT      = 9 # User left project
   DESTROYED = 10
+  EXPIRED   = 11 # User left project due to expiry
 
   RESET_PROJECT_ACTIVITY_INTERVAL = 1.hour
 
@@ -115,6 +116,10 @@ class Event < ActiveRecord::Base
     action == LEFT
   end
 
+  def expired?
+    action == EXPIRED
+  end
+
   def destroyed?
     action == DESTROYED
   end
@@ -124,7 +129,7 @@ class Event < ActiveRecord::Base
   end
 
   def membership_changed?
-    joined? || left?
+    joined? || left? || expired?
   end
 
   def created_project?
@@ -184,6 +189,8 @@ class Event < ActiveRecord::Base
       'joined'
     elsif left?
       'left'
+    elsif expired?
+      'removed due to membership expiration from'
     elsif destroyed?
       'destroyed'
     elsif commented?
diff --git a/app/models/members/project_member.rb b/app/models/members/project_member.rb
index 125f26369d7..e4880973117 100644
--- a/app/models/members/project_member.rb
+++ b/app/models/members/project_member.rb
@@ -121,7 +121,11 @@ class ProjectMember < Member
   end
 
   def post_destroy_hook
-    event_service.leave_project(self.project, self.user)
+    if expired?
+      event_service.expired_leave_project(self.project, self.user)
+    else
+      event_service.leave_project(self.project, self.user)
+    end
 
     super
   end
diff --git a/app/services/event_create_service.rb b/app/services/event_create_service.rb
index 07fc77001a5..e24cc66e0fe 100644
--- a/app/services/event_create_service.rb
+++ b/app/services/event_create_service.rb
@@ -62,6 +62,10 @@ class EventCreateService
     create_event(project, current_user, Event::LEFT)
   end
 
+  def expired_leave_project(project, current_user)
+    create_event(project, current_user, Event::EXPIRED)
+  end
+
   def create_project(project, current_user)
     create_event(project, current_user, Event::CREATED)
   end