 
#  Copyright 2007-2008 Stanislav Senotrusov <senotrusov@gmail.com>
# 
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
# 
#      http://www.apache.org/licenses/LICENSE-2.0
# 
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
 

module CheckIsActive
  def is_active?
    is_active_at? active_since.kind_of?(Date) ? Date.today : Time.now
  end

  def is_active_at? time
    (active == true || active == nil) &&
    ((active_since != nil && active_since <= time && active_till != nil && active_till > time) ||
     (active_since == nil && active_till != nil && active_till > time) ||
     (active_since != nil && active_since <= time && active_till == nil) ||
     (active_since == nil && active_till == nil)) || false
  end
end
