Make bot more human-like by delaying answers

- Greet newcommers with notable randomized delay + send "typing", pretending we are real human :)
- Make 1-2 second delay in group chat before answer.

lib/telegrambot.pm

@@ -158,6 +158,17 @@ sub __on_msg {
 			$send_args->{text} = "Дратути, [$fullname](tg://user?id=$userid). Представьтес, пожалуйста, и расскажите, что вас сюда привело.";
 		}
 
+		# let's emulate real human and delay answer
+		sleep (int ( rand (3) + 1));
+
+		for (my $i = 0; $i <= (4 + int (rand (3))); $i++) {
+			sendChatAction($chatid);
+			sleep(3);
+			sleep 3 unless ($i);
+		}
+
+		sleep ( 3 + int ( rand (2)));
+
 		Telegram::Bot::Brain::sendMessage ($self, $send_args);
 		return;
 	}
@@ -360,6 +371,7 @@ sub __on_msg {
 				$reply = randomCommonPhrase();
 			}
 
+			sleep (int (rand (2)));
 			logger sprintf ("In public chat %s (%s) bot reply to %s: %s", $chatname, $chatid, $vis_a_vi, $reply);
 			$msg->reply ($reply);
 		} else {

lib/telegramlib.pm

@@ -13,7 +13,7 @@ use Telegram::Bot::Brain;
 # module shit
 use vars qw/$VERSION/;
 use Exporter qw(import);
-our @EXPORT = qw(getChat getChatMember visavi);
+our @EXPORT = qw(getChat getChatMember sendChatAction visavi);
 
 $VERSION = "1.0";
 
@@ -52,6 +52,23 @@ sub getChatMember {
 	return $api_response;
 }
 
+# complete framework with our sendChatAction()
+# sets bot status to "typing" for 5 seconds
+# # TODO: more actions!
+sub sendChatAction {
+	my $self = shift;
+	my $chatid = shift;
+	my $send_args = {};
+	$send_args->{chat_id} = $chatid;
+	$send_args->{action} = "typing";
+	my $token = $self->token;
+	my $url = "https://api.telegram.org/bot${token}/sendChatAction";
+	my $api_response = $self->_post_request ($url, $send_args);
+
+	# return Telegram::Bot::Object::User->create_from_hash($api_response, $self);
+	return;
+}
+
 sub visavi (@) {
 	my ($userid, $username, $fullname) = @_;
 	my $name = '';