feat(telegram): implement asynchronous Telegram alert system and enhance user verification messaging ✨

api/bot.py

@@ -0,0 +1,69 @@
+import asyncio
+import threading
+import logging
+import time
+from telegram import Bot
+from telegram.constants import ParseMode
+from decouple import config
+import re
+
+logger = logging.getLogger(__name__)
+telegram_loop = None
+
+BOT_TOKEN = config("TG_BOT_TOKEN", default="killme", cast=str)
+CHAT_ID = config("TG_CHAT_ID", default="drake", cast=str)
+
+if not BOT_TOKEN or not isinstance(BOT_TOKEN, str):
+    raise ValueError(
+        "TG_BOT_TOKEN environment variable must be set and must be a string."
+    )
+if not CHAT_ID:
+    raise ValueError(
+        "TG_CHAT_ID environment variable must be set and must be a string."
+    )
+
+bot = Bot(token=BOT_TOKEN)
+
+
+def telegram_worker():
+    """
+    Run the event loop for Telegram in a separate daemon thread.
+    """
+    global telegram_loop
+    telegram_loop = asyncio.new_event_loop()
+    asyncio.set_event_loop(telegram_loop)
+    try:
+        logger.info("Telegram loop started.")
+        telegram_loop.run_forever()
+    except Exception as e:
+        logger.exception(f"Telegram worker crashed! {e}", exc_info=True)
+    finally:
+        telegram_loop.close()
+
+
+# Start the Telegram worker thread when the module is loaded
+telegram_thread = threading.Thread(target=telegram_worker, daemon=True)
+telegram_thread.start()
+
+# Wait until telegram_loop is ready
+timeout = 5
+for _ in range(timeout * 10):  # up to 5 seconds
+    if telegram_loop is not None:
+        break
+    time.sleep(0.1)
+else:
+    logger.error("Telegram loop failed to initialize in time.")
+
+
+async def send_telegram_alert(markdown_message: str):
+    logger.info("[TELEGRAM] Preparing to send alert...")
+    await bot.send_message(
+        chat_id=str(CHAT_ID),
+        text=markdown_message,
+        parse_mode=ParseMode.MARKDOWN_V2,
+    )
+
+
+def escape_markdown_v2(text: str) -> str:
+    escape_chars = r"_~`>#+-=|{}.!\\"
+    return re.sub(f"([{re.escape(escape_chars)}])", r"\\\1", text)

api/tasks.py

@@ -1,3 +1,4 @@
+# pyright: reportGeneralTypeIssues=false
 from django.shortcuts import get_object_or_404
 from api.models import User
 from devices.models import Device
@@ -8,6 +9,8 @@ from django.utils import timezone
 
 # from api.notifications import send_clean_telegram_markdown
 from api.omada import Omada
+from api.bot import send_telegram_alert, telegram_loop, escape_markdown_v2
+import asyncio
 from apibase.env import env, BASE_DIR
 from procrastinate.contrib.django import app
 from procrastinate import builtin_tasks
@@ -147,18 +150,9 @@ def verify_user_with_person_api_task(user_id: int):
     if not user:
         logger.error(f"User with ID {user_id} not found.")
         return None
-    # Call the Person API to verify the user
 
-    # verification_failed_message = f"""
+    verification_failed_message = f"""*The following user verification failed*:\n\n*ID Card:* {user.id_card}\n*Name:* {user.first_name} {user.last_name}\n*House Name:* {user.address}\n*Date of Birth:* {user.dob}\n*Island:* {(user.atoll.name if user.atoll else "N/A")} {(user.island.name if user.island else "N/A")}\n*Mobile:* {user.mobile}\nVisit [SAR Link Portal](https://portal.sarlink.net/users/{user_id}/details) to manually verify this user.
-    # _The following user verification failed_:
+    """
-    # *ID Card:* {user.id_card}
-    # *Name:* {user.first_name} {user.last_name}
-    # *House Name:* {user.address}
-    # *Date of Birth:* {user.dob}
-    # *Island:* {(user.atoll.name if user.atoll else "N/A")} {(user.island.name if user.island else "N/A")}
-    # *Mobile:* {user.mobile}
-    # Visit [SAR Link Portal](https://portal.sarlink.net) to manually verify this user.
-    # """
 
     # logger.info(verification_failed_message)
     PERSON_VERIFY_BASE_URL = env.str("PERSON_VERIFY_BASE_URL", default="")  # type: ignore
@@ -228,7 +222,7 @@ def verify_user_with_person_api_task(user_id: int):
             user.save()
             send_sms(
                 user.mobile,
-                f"Dear {user.first_name} {user.last_name}, \n\nYour account has been successfully and verified. \n\nYou can now manage your devices and make payments through our portal at https://portal.sarlink.net. \n\n - SAR Link",
+                f"Dear {user.first_name} {user.last_name}, \n\nYour account has been successfully verified. \n\nYou can now manage your devices and make payments through our portal at https://portal.sarlink.net. \n\n - SAR Link",
             )
             return True
         else:
@@ -240,6 +234,16 @@ def verify_user_with_person_api_task(user_id: int):
                 f"Dear {user.first_name} {user.last_name}, \n\nYour account registration is being processed. \n\nWe will notify you once verification is complete. \n\n - SAR Link",
             )
             # send_clean_telegram_markdown(message=verification_failed_message)
+
+            try:
+                asyncio.run_coroutine_threadsafe(
+                    send_telegram_alert(
+                        markdown_message=escape_markdown_v2(verification_failed_message)
+                    ),
+                    telegram_loop,
+                ).result()
+            except Exception as e:
+                logger.warning("[Registration] TELEGRAM ALERT ERROR", e)
             return False
     else:
         # Handle the error case

billing/urls.py

@@ -12,6 +12,7 @@ from .views import (
     CancelTopupView,
     ListWalletTransactionView,
     AdminTopupCreateView,
+    # AlertTestView,
 )
 
 urlpatterns = [
@@ -50,4 +51,6 @@ urlpatterns = [
         ListWalletTransactionView.as_view(),
         name="list-wallet-transactions",
     ),
+    # Test tg notification
+    # path("test-alert/", AlertTestView.as_view(), name="test-alert"),
 ]

billing/views.py

@@ -30,6 +30,9 @@ from typing import Optional
 from api.models import User
 from api.omada import Omada
 
+# from api.bot import send_telegram_alert, telegram_loop, escape_markdown_v2
+# import asyncio
+
 env.read_env(os.path.join(BASE_DIR, ".env"))
 
 PAYMENT_BASE_URL = env("PAYMENT_BASE_URL", default="")  # type: ignore
@@ -685,3 +688,35 @@ class ListWalletTransactionView(StaffEditorPermissionMixin, generics.ListAPIView
 
         serializer = self.get_serializer(queryset, many=True)
         return Response(serializer.data)
+
+
+# class AlertTestView(generics.GenericAPIView):
+#     def get(self, request, *args, **kwargs):
+#         msg = """*ID Card:* A265117\n*Name:* Abdulla Aidhaan\n*House Name:* Nooree Villa\n*Date of Birth:* 1997-08-24\n*Island:* Sh Funadhoo\n*Mobile:* 9697404\nVisit [SAR Link Portal](https://portal.sarlink.net) to manually verify this user."""
+#         print(msg)
+#         print("escaped:", escape_markdown_v2(msg))
+#         user = request.user
+#         print(user)
+
+#         global telegram_loop  # Access the global loop
+
+#         if telegram_loop is None:
+#             return Response(
+#                 {"message": "Telegram worker not initialized."},
+#                 status=status.HTTP_503_SERVICE_UNAVAILABLE,
+#             )
+
+#         try:
+#             asyncio.run_coroutine_threadsafe(
+#                 send_telegram_alert(markdown_message=escape_markdown_v2(msg)),
+#                 telegram_loop,
+#             ).result()
+
+#             return Response(
+#                 {"message": "Alert sent successfully."}, status=status.HTTP_200_OK
+#             )
+#         except Exception as e:
+#             logger.warning("[alert test] TELEGRAM ALERT ERROR", e)
+#             return Response(
+#                 {"message": "Alert failed to send."}, status=status.HTTP_400_BAD_REQUEST
+#             )