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handlers/MainChannelDaLinkHandler.py

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+from bot.DaHandler import DaHandler
+from telegram import ParseMode
+import bot
+import re
+from urllib.parse import urlparse
+
+
+class MainChannelDaLinkHandler(DaHandler):
+
+    def handler(self, update, context):
+        if bot.config['MAIN_CANNEL_ID'] == str(update.effective_chat.id):
+            if update.effective_message.text is not None:
+                text = update.effective_message.text
+                s = re.search("(?P<url>https?://[^\s]+)", text)
+                if s is not None:
+                    link = s.group("url")
+                    domain = urlparse(link).netloc
+                    if domain == bot.config['MAP_DOMAIN']:
+                        final_text = "{text}".format(
+                            text="<a href='{link}'>&#128506; Смотреть на карте</a>".format(link=link))
+                        update.effective_message.text = final_text
+
+                        context.bot.editMessageText(chat_id=update.effective_chat.id,
+                                                    message_id=update.effective_message.message_id,
+                                                    text=final_text, parse_mode=ParseMode.HTML)