implement macro to automatically parse integers from bot messages

src/bot.rs

@@ -14,3 +14,19 @@ macro_rules! reply_i18n_and_return {
         return Ok(())
     };
 }
+
+#[macro_export]
+macro_rules! parse_integer {
+    ($bot:expr, $chat_id:expr, $integer:expr, $out:expr) => {{
+        let out: i64 = match $integer.parse() {
+            Ok(integer) => integer,
+            Err(_) => {
+                $bot.send_message($chat_id, t!("not_valid_integer"))
+                    .await?;
+                return Ok(());
+            }
+        };
+
+        out
+    }};
+}