Noosfero/noosfero

class FriendshipSweeper < ActiveRecord::Observer
  observe :friendship
  include SweeperHelper

  def after_create(friendship)
    expire_caches(friendship)
  end

  def after_destroy(friendship)
    if friendship.person
      expire_cache(friendship.person)
    end
  end

  protected

    def expire_caches(friendship)
      [friendship.person, friendship.friend].each do |profile|
        if profile
          expire_cache(profile)
        end
      end
    end

    def expire_cache(profile)
      # public friends page
      pages = profile.friends.count / Noosfero::Constants::PROFILE_PER_PAGE + 1
      (1..pages).each do |i|
        expire_timeout_fragment(profile.friends_cache_key(npage: i.to_s))
      end
      # manage friends page
      pages = profile.friends.count / Noosfero::Constants::PROFILE_PER_PAGE + 1
      (1..pages).each do |i|
        expire_timeout_fragment(profile.manage_friends_cache_key(npage: i.to_s))
      end

      expire_blocks_cache(profile, [:profile])
    end
end