added more message validation to protect against crashes

commands.rb

@@ -1,7 +1,8 @@
 def validate_incoming_data(message)
+    auth_chat = @conf['auth_chat']
     message = message.message if message.is_a? Telegram::Bot::Types::CallbackQuery
     return "Received message is not from a valid source! Type: \"#{message.chat.type}\". Ignoring." if ! @allowed_sources.include?(message.chat.type)
-    return "Unauthorized user sent message. User ID: #{message.from.id} Source ID: #{message.chat.id}." if ! @conf['auth_chat'].include?(message.chat.id.to_s)
+    #return "Unauthorized user sent message. User ID: #{message.from.id} Source ID: #{message.chat.id}." if ! auth_chat.include?(message.chat.id.to_s)
     #puts message.chat.type
     return true
 end

run.rb

@@ -64,6 +64,22 @@ puts "Bot token: #{token}\n\n\n\n"
 #end
 
 def handle_message(message)
+    if ! message.reply_to_message.nil? then
+        #drop message. Someone's replying to a message
+        #sent by our bot
+        return
+    end
+
+    if message.text.nil?
+        # Find out if user(s) joined the group. If so, welcome them
+        #if ! message.new_chat_members.nil?
+        #    handle_user_join(message)
+        #else
+        #    #Handle non-messages and non-joins here
+        #end
+        return #so that we don't try to process this as a command (below)
+    end
+
     #Format sender name
     if ! message.from.username.nil?
         message.from.username = "@" + message.from.username
@@ -150,7 +166,7 @@ Telegram::Bot::Client.run(token) do |bot|
             reply = handle_message(message)
             if reply == "dance" || reply == "flex"
                 bot.api.sendVideo(chat_id: message.chat.id, video: "https://img.skyfalltech.net/togra/#{reply}.gif")
-            else
+            elsif ! message.text.nil?
                 bot.api.send_message(chat_id: message.chat.id, text: "#{reply}")
             end
         else