module InfoRequestCustomStates

    def self.included(base)
        base.extend(ClassMethods)
    end

    # Mixin methods for InfoRequest
    def theme_calculate_status
        return 'waiting_classification' if self.awaiting_description
        waiting_response = self.described_state == "waiting_response" || self.described_state == "deadline_extended"
        return self.described_state unless waiting_response
        if self.described_state == 'deadline_extended' 
            return 'deadline_extended' if
                Time.now.strftime("%Y-%m-%d") < self.date_deadline_extended.strftime("%Y-%m-%d")
            return 'waiting_response_very_overdue'  if 
                Time.now.strftime("%Y-%m-%d") > Holiday.due_date_from_working_days(self.date_deadline_extended, 15).strftime("%Y-%m-%d")
            return 'waiting_response_overdue'
        end
        return 'waiting_response_very_overdue' if
            Time.now.strftime("%Y-%m-%d") > self.date_very_overdue_after.strftime("%Y-%m-%d")
        return 'waiting_response_overdue' if
            Time.now.strftime("%Y-%m-%d") > self.date_response_required_by.strftime("%Y-%m-%d")
        return 'waiting_response'
    end        

    def date_deadline_extended
        # XXX shouldn't this be 15 days after the date the status was
        # changed to "deadline extended"? Or perhaps 15 days ater the
        # initial request due date?
        return Holiday.due_date_from_working_days(self.date_response_required_by, 15)
    end

    module ClassMethods 
        def theme_display_status(status)
            if status == 'deadline_extended'
                _("Deadline extended.")
            elsif status == 'wrong_response'
                _("Wrong Response.")
            else
                raise _("unknown status ") + status        
            end
        end

        def theme_extra_states
            return ['deadline_extended',
                    'wrong_response']
        end
    end
end

module RequestControllerCustomStates

    def theme_describe_state(info_request)
        # called after the core describe_state code.  It should
        # end by raising an error if the status is unknown
        if info_request.calculate_status == 'deadline_extended'
            flash[:notice] = _("Authority has requested extension of the deadline.")
            redirect_to unhappy_url(info_request)
        elsif info_request.calculate_status == 'wrong_response'
            flash[:notice] = _("Oh no! Sorry to hear that your request was wrong. Here is what to do now.")
            redirect_to unhappy_url(info_request)
        else
            raise "unknown calculate_status " + info_request.calculate_status
        end
    end

end