DannyBen/jobly

require 'slack-notifier'

module Jobly
  module Slack
    def self.included(base)
      base.extend ClassMethods
    end

    module ClassMethods
      def slack_channel(channel = nil)
        if channel
          @slack_channel = channel
        else
          @slack_channel ||= Jobly.slack_channel
        end
      end

      def slack_user(user = nil)
        if user
          @slack_user = user
        else
          @slack_user ||= Jobly.slack_user
        end
      end
    end

    def slack
      @slack ||= slack!
    end

    def slack!
      raise ArgumentError, 'Slack webhook is not set' unless Jobly.slack_webhook

      opts = {
        channel:  self.class.slack_channel,
        username: self.class.slack_user,
      }
      ::Slack::Notifier.new Jobly.slack_webhook, opts
    end
  end
end