```ruby
module Fastlane
  module Actions
    module SharedValues

    end

    class SlackAction
      def self.run(params)
        options = { message: '',
                    success: true,
                    channel: nil
                  }.merge(params.first || {})

        require 'slack-notifier'

        color = (options[:success] ? 'good' : 'danger')
        options[:message] = Slack::Notifier::LinkFormatter.format(options[:message])

        url = ENV["SLACK_URL"]
        unless url
          Helper.log.fatal "Please add 'ENV[\"SLACK_URL\"] = \"https://hooks.slack.com/services/...\"' to your Fastfile's `before_all` section.".red
          raise "No SLACK_URL given.".red
        end

        notifier = Slack::Notifier.new url

        notifier.username = 'fastlane'
        notifier.channel = "##{options[:channel]}" if options[:channel].to_s.length > 0

        test_result = {
          fallback: options[:message],
          text: options[:message],
          color: color,
          fields: [
            {
              title: "Lane",
              value: Actions.lane_context[Actions::SharedValues::LANE_NAME],
              short: true
            },
            {
              title: "Test Result",
              value: (options[:success] ? "Success" : "Error"),
              short: true
            }
          ]
        }

        notifier.ping "",
                      icon_url: 'https://s3-eu-west-1.amazonaws.com/fastlane.tools/fastlane.png',
                      attachments: [test_result]

        Helper.log.info "Successfully sent Slack notification"
      end
    end
  end
end```

Allow to send direct messages to a specific user (using @nickname)
user
```ruby
module Fastlane
  module Actions
    module SharedValues

    end

    class SlackAction
      def self.run(params)
        options = { message: '',
                    success: true,
                    channel: nil
                  }.merge(params.first || {})

        require 'slack-notifier'

        color = (options[:success] ? 'good' : 'danger')
        options[:message] = Slack::Notifier::LinkFormatter.format(options[:message])

        url = ENV["SLACK_URL"]
        unless url
          Helper.log.fatal "Please add 'ENV[\"SLACK_URL\"] = \"https://hooks.slack.com/services/...\"' to your Fastfile's `before_all` section.".red
          raise "No SLACK_URL given.".red
        end

        notifier = Slack::Notifier.new url

        notifier.username = 'fastlane'
        notifier.channel = "#{options[:channel]}" if options[:channel].to_s.length > 0
        notifier.channel = "##{notifier.channel}" unless ["#", "@"].include? notifier.channel[0] #send msg to channel by default

        test_result = {
          fallback: options[:message],
          text: options[:message],
          color: color,
          fields: [
            {
              title: "Lane",
              value: Actions.lane_context[Actions::SharedValues::LANE_NAME],
              short: true
            },
            {
              title: "Test Result",
              value: (options[:success] ? "Success" : "Error"),
              short: true
            }
          ]
        }

        notifier.ping "",
                      icon_url: 'https://s3-eu-west-1.amazonaws.com/fastlane.tools/fastlane.png',
                      attachments: [test_result]

        Helper.log.info "Successfully sent Slack notification"
      end
    end
  end
end```
assistant