#--
# Copyright (c) 2011 Michael Berkovich
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++

module WillFilter
  module Containers
    class DateTimeRange < WillFilter::FilterContainer
      attr_accessor :start_value, :end_value
    
      def self.operators
        [:is_in_the_range]
      end
    
      def initialize(filter, criteria_key, operator, values)
        super(filter, criteria_key, operator, values)
    
        @start_value = values[0]
        @end_value = values[1] if values.size > 1
      end
    
      def validate
        return "Start value must be provided" if start_value.blank?
        return "Start value must be a valid date/time (2008-01-01 14:30:00)" if start_time == nil
        return "End value must be provided" if end_value.blank?
        return "End value must be a valid date/time (2008-01-01 14:30:00)" if end_time == nil
      end
    
      def start_time
        Time.parse(start_value)
      rescue ArgumentError
        nil
      end
    
      def end_time
        Time.parse(end_value)
      rescue ArgumentError
        nil
      end
    
      def sql_condition
        return [" (#{condition.full_key} >= ? and #{condition.full_key} <= ?) ", start_time, end_time] if operator == :is_in_the_range
      end
    end
  end 
end