module DevelopWithPassion
  module Fakes
    class MethodStub
      def initialize(arg_sets = [])
        array :arg_sets do|a|
          a.mutator :add_new_set do|set|
            @arg_sets << set
            set
          end
        end
        @arg_sets = arg_sets
      end

      def with(*args)
        return add_new_set(ArgSet.new(args))
      end


      def ignore_arg
        return add_new_set(IgnoreSet.new)
      end

      def and_return(item)
        ignore_arg.and_return(item)
      end


      def invoke(args)
        set = @arg_sets.find{|item| item.matches?(args)} || ignore_arg
        set.capture_args(args)
        return set.return_value
      end

      def called_with(*args)
        return @arg_sets.find{|item| item.was_called_with?(args)}
      end

      def total_times_called
        return @arg_sets.inject(0){|sum,item|sum += item.times_called}
      end

      def times?(value)
        return total_times_called == value
      end
    end
  end
end