require "set"

module Flipper
  class GateValues
    # Private: Array of instance variables that are readable through the []
    # instance method.
    LegitIvars = Set.new([
      "boolean",
      "actors",
      "groups",
      "percentage_of_time",
      "percentage_of_actors",
    ]).freeze

    attr_reader :boolean
    attr_reader :actors
    attr_reader :groups
    attr_reader :percentage_of_actors
    attr_reader :percentage_of_time

    def initialize(adapter_values)
      @boolean = Typecast.to_boolean(adapter_values[:boolean])
      @actors = Typecast.to_set(adapter_values[:actors])
      @groups = Typecast.to_set(adapter_values[:groups])
      @percentage_of_actors = Typecast.to_integer(adapter_values[:percentage_of_actors])
      @percentage_of_time = Typecast.to_integer(adapter_values[:percentage_of_time])
    end

    def [](key)
      return nil unless LegitIvars.include?(key.to_s)
      instance_variable_get("@#{key}")
    end

    def eql?(other)
      self.class.eql?(other.class) &&
        boolean == other.boolean &&
        actors == other.actors &&
        groups == other.groups &&
        percentage_of_actors == other.percentage_of_actors &&
        percentage_of_time == other.percentage_of_time
    end
    alias_method :==, :eql?
  end
end