Update OTP generation interval, enhance SMS sending functionality, and add age validation for temporary user registration

api/views.py

@@ -19,6 +19,8 @@ from api.serializers import (
     TemporaryUserSerializer,
 )
 from django.shortcuts import get_object_or_404
+from django.utils import timezone
+from datetime import timedelta
 
 # knox imports
 from knox.views import LoginView as KnoxLoginView
@@ -52,6 +54,7 @@ class ErrorMessages:
     ID_CARD_EXISTS = "ID card already exists."
     INVALID_MOBILE = "Please enter a valid mobile number."
     INVALID_ACCOUNT = "Please enter a valid account number."
+    UNDERAGE_ERROR = "You must be 18 and above to signup."
 
 
 class UpdateUserWalletView(generics.UpdateAPIView):
@@ -105,6 +108,23 @@ class CreateTemporaryUserView(generics.CreateAPIView):
         firstname = request.data.get("firstname")
         lastname = request.data.get("lastname")
 
+        current_date = timezone.now()
+        try:
+            dob = timezone.datetime.strptime(dob, "%Y-%m-%d").date()
+        except ValueError:
+            return Response(
+                {"message": "Invalid date format for DOB. Use YYYY-MM-DD."}, status=400
+            )
+
+        age_from_dob = (
+            current_date.year
+            - dob.year
+            - ((current_date.month, current_date.day) < (dob.month, dob.day))
+        )
+
+        if age_from_dob < 18:
+            return Response({"message": ErrorMessages.UNDERAGE_ERROR}, status=400)
+
         if (
             TemporaryUser.objects.filter(t_mobile=mobile).exists()
             or User.objects.filter(mobile=mobile).exists()
@@ -162,11 +182,13 @@ class CreateTemporaryUserView(generics.CreateAPIView):
             t_terms_accepted=terms_accepted,
             t_policy_accepted=policy_accepted,
         )
+        otp_expiry = timezone.now() + timedelta(minutes=3)
+        formatted_time = otp_expiry.strftime("%d/%m/%Y %H:%M:%S")
         otp = temp_user.generate_otp()
         send_otp(
             temp_user.t_mobile,
             otp,
-            f"Your Registration SARLink OTP is: {otp}, valid for 30 seconds. Please do not share it with anyone.",
+            f"Your Registration SARLink OTP: {otp}. \nExpires at {formatted_time}. \n\n- SAR Link",
         )
         serializer = self.get_serializer(temp_user)
         headers = self.get_success_headers(serializer.data)