Telegram handler fixes

telegram_handler.py

@@ -3,6 +3,8 @@ import asyncio
 import threading
 import yaml
 import telegram
+import re
+
 
 ITEM_TEXT = "*Artículo*: {}\n" \
             "*Descripción*: {}\n" \
@@ -21,11 +23,16 @@ class TelegramHandler:
         config_file = 'config.yaml'
         with open(config_file, 'r') as file:
             config = yaml.safe_load(file)
-            print(config)
             token = config['telegram_token']
             telegram_channel = config['telegram_channel']
         return token, telegram_channel
 
+    
+    def escape_markdown(self, text):
+        special_chars = r'_[\]()~`>#\+\-=|{}.!]'
+        escaped_text = re.sub(f'([{re.escape(special_chars)}])', r'\\\1', text)
+        return escaped_text
+
     def send_telegram_article(self, article):
         self._loop.run_until_complete(self.send_telegram_article_async(article))
 
@@ -33,4 +40,5 @@ class TelegramHandler:
         message = ITEM_TEXT.format(article.get_title(), article.get_description(),
                                    article.get_price(), article.get_currency(),
                                    article.get_url())
-        await self._bot.send_message(self._channel, text=message, parse_mode="MARKDOWN")
+        escaped_message = self.escape_markdown(message)
+        await self._bot.send_message(self._channel, text=escaped_message, parse_mode="MarkdownV2")