artsy/garner

module Garner
  module Strategies
    module Context
      module Key
        class Jsonp < Base
          def self.field
            :request_params
          end

          # Strips JSONP parameters from the key.
          #
          # @param identity [Garner::Cache::Identity] The cache identity.
          # @param ruby_context [Object] An optional Ruby context.
          # @return [Garner::Cache::Identity] The modified identity.
          def self.apply(identity, ruby_context = nil)
            key_hash = identity.key_hash
            return super unless key_hash[field]

            key_hash[field].delete('callback')
            key_hash[field].delete('_')
            identity
          end
        end
      end
    end
  end
end