hello.rb in slack-ruby-bot-0.13.0

- old
+ new

@@ -1,16 +1,35 @@
+# frozen_string_literal: true
+
 module SlackRubyBot
   module Hooks
     class Hello
-      attr_accessor :logger
+      attr_accessor :logger, :connected_at
 
       def initialize(logger)
         self.logger = logger
       end
 
       def call(client, _data)
-        return unless client && client.team
-        logger.info "Successfully connected team #{client.team.name} (#{client.team.id}) to https://#{client.team.domain}.slack.com."
+        return unless client&.team
+
+        new_connected_at = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+        log = [
+          'Successfully',
+          connected_at ? 'reconnected' : 'connected',
+          "team #{client.team.name} (#{client.team.id}) to https://#{client.team.domain}.slack.com",
+          connected_at ? "after #{last_connection_till(new_connected_at)}s" : nil
+        ].compact.join(' ') + '.'
+
+        logger.info log
+
+        self.connected_at = new_connected_at
+      end
+
+      private
+
+      def last_connection_till(time)
+        (time - connected_at).round(2)
       end
     end
   end
 end