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class RoleAssignmentSweeper < ActiveRecord::Observer
  observe :role_assignment
  include SweeperHelper

  def after_create(role_assignment)
    expire_caches(role_assignment)
  end

  def after_destroy(role_assignment)
    expire_caches(role_assignment)
  end

protected

  def expire_caches(role_assignment)
    expire_cache(role_assignment.accessor) if role_assignment.accessor.kind_of?(Profile)
    expire_cache(role_assignment.resource) if role_assignment.resource.kind_of?(Profile)
  end

  def expire_cache(profile)
    per_page = Noosfero::Constants::PROFILE_PER_PAGE

    profile.cache_keys(:per_page => per_page).each { |ck| expire_timeout_fragment(ck) }
    expire_timeout_fragment(profile.members_cache_key(:per_page => per_page))

    profile.blocks_to_expire_cache.each { |block|
      blocks = profile.blocks.select{|b| b.kind_of?(block)}
      expire_profile_blocks(blocks)
    }

    expire_blocks_cache(profile, [:role_assignment])
  end
end