module Boty
  module Slack
    module URL
      def self.included(base)
        class << base
          attr_reader :_url
        end

        base.instance_eval do
          def url(url)
            @_url = url
          end
        end
      end

      def self.get(url)
        JSON.parse Net::HTTP.get(URI(url)) || "{}"
      end

      private

      def parameterize(user_parameters, path: nil)
        url = path ? self.class._url + path : self.class._url
        parameters = { token: ENV["SLACK_BOT_API_TOKEN"] }.merge user_parameters
        parameters.reduce(url + "?") { |final_url, param|
          parameter = param[0]
          value = URI.encode param[1].to_s
          "#{final_url}#{parameter}=#{value}&"
        }.gsub(/&$/, "")
      end
    end
  end
end