#--
# Copyright (C) 2007 Dimitrij Denissenko
# Please read LICENSE document for more information.
#++
class TicketObserver < ActiveRecord::Observer
  observe Ticket

  # Subscribe current user
  # Subscribe assigned user
  def before_save(ticket)
    if ticket.subscribe_current_user
      ticket.add_subscriber(User.current)      
    end      

    if RetroCM[:ticketing][:subscription][:subscribe_on_assignement] && 
        ticket.assigned_user_id && 
        ( ticket.new_record? || ticket.changed_attributes.key?('Assigned user') )

      ticket.assigned_user.reload if ticket.assigned_user_id != ticket.assigned_user.id
      ticket.add_subscriber(ticket.assigned_user)
    end 
  end


  # Update ticket cache
  def after_save(ticket)
    ticket_cache = ticket.project.existing_tickets
    if ticket_cache[ticket.id].blank? || 
       ticket_cache[ticket.id][:state] != ticket.state.id || 
       ticket_cache[ticket.id][:summary] != ticket.summary

      ticket_cache.merge!(ticket.id => {:state => ticket.state.id, :summary => ticket.summary})
      ticket.project.update_attribute(:existing_tickets, ticket_cache)
    end      
  end


  # Send out notifications to subscribers
  def after_create(ticket)
    ticket.permitted_subscribers.each do |user|
      Notifications.queue_ticket_creation_note(ticket, :recipients => user.email)                 
    end    
  end


  # Remove reference from ticket cache
  def before_destroy(ticket)
    ticket_cache = ticket.project.existing_tickets
    ticket_cache.delete(ticket.id)
    ticket.project.update_attribute(:existing_tickets, ticket_cache)
  end

end