Show error mark if message not received after 10 secs

lib/main.rb

@@ -282,6 +282,7 @@ private
           history: (state[:friends][friend_number][:history] + [
             error:    error,
             out:      true,
+            received: false,
             time:     Time.now.utc.freeze,
             name:     @tox_client.name.freeze,
             text:     text,

lib/widgets/chat/history.rb

@@ -13,7 +13,14 @@ module Widgets
         offset = 0
 
         props[:messages].reverse_each do |msg|
-          offset += draw_message offset, msg[:error], msg[:out], msg[:time].strftime('%H:%M:%S'), msg[:name], msg[:text]
+          offset += draw_message(
+            offset,
+            msg[:error] || msg[:out] && !msg[:received] && Time.now.utc - msg[:time] > 10,
+            msg[:out],
+            msg[:time].strftime('%H:%M:%S'),
+            msg[:name],
+            msg[:text],
+          )
 
           break if offset >= props[:height]
         end