metaminded/tabulatr2

#--
# Copyright (c) 2010-2014 Peter Horn & Florian Thomas, metaminded UG
#
# 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.
#++

class Tabulatr::Data::Invoker
  def initialize(batch_action, ids)
    @batch_action = batch_action.to_sym
    @ids = ids
    @result = nil
  end

  def method_missing(name, *args, &block)
    @result ||= if @batch_action == name
      s = yield(@ids)
      if s.is_a?(Hash) && s[:data]
        Tabulatr::Responses::RawResponse.new(s[:data], filename: s[:filename], type: s[:type])
      elsif s.is_a?(Hash) && s[:file]
        Tabulatr::Responses::FileResponse.new(s[:file], filename: s[:filename], type: s[:type])
      elsif s.is_a?(Hash) && s[:url]
        Tabulatr::Responses::RedirectResponse.new(s[:url], ids: @ids)
      else
        s
      end
    end
  end
end