slack_rtm:
  git: https://git.sr.ht/~pixelinc/Slack-RTM
  branch: master

client = Slack::Client.new("token")

# optionally enable caching
cache = Slack::Cache.new(client)
client.cache = cache

client.on_message do |event|
  user = cache.resolve_user(event.user)
  puts "I got a message that says: #{event.text}"
  puts user.name
end

client.run