Refactor login method in POSDeviceViewSet to improve device activation logic and response messages

apps/pos_device/pos/api/v1/viewsets/device.py

@@ -48,36 +48,50 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
         headers_data = {key: request.headers.get(key) for key in self.HEADERS}
 
         serial = headers_data['device-serial']
+        mac = headers_data['device-mac']
         sdk = headers_data['device-sdk']
         psp_name = headers_data['device-provider']
+
         # provider organization
         organization = pos_models.Organization.objects.get(en_name=psp_name)
 
-        # check if device exists
-        if 'device_identity' in request.data.keys() and request.data['device_identity'] != "":
+        device = self.device_queryset.filter(serial=serial).first()
+        
+        if not device and 'device_identity' in request.data.keys() and request.data['device_identity'] != "":
             device = self.device_queryset.filter(device_identity=request.data['device_identity']).first()
-        else:
-            device = self.device_queryset.filter(serial=serial).first()
-
-        # activate device
+         
         if device:
-            if (not device.is_activated or not device.pre_registered) and device.assigned_state:
-                # when device is logged in, its has an organization owner client, if not it will show error
-                device_owner_org = self.get_device_organization()
+            if not device.is_activated and device.pre_registered and device.assigned_state:
+                # activate device
                 device.is_activated = True
                 device.save()
 
-                session = pos_models.Sessions.objects.create(
-                    device=device,
-                    password=device.password,
-                    version=headers_data['device-version'],
-                    mac=headers_data['device-mac'],
-                    ip=get_client_ip(request),
-                    sdk=headers_data['device-sdk'],
-                    serial=headers_data['device-serial'],
-                    latitude=headers_data['device-lot'],
-                    longitude=headers_data['device-lng'],
-                )
+            if device.is_activatedand and device.assigned_state: 
+                # when device is logged in, its has an organization owner client, if not it will show error
+                device_owner_org = self.get_device_organization()
+
+                session = self.session_queryset.filter(serial=serial).first()
+                if not session:
+                    session = pos_models.Sessions.objects.create(
+                        device=device, 
+                        name = headers_data['device-name'],
+                        version=headers_data['device-version'],
+                        mac=headers_data['device-mac'],
+                        ip=get_client_ip(request),
+                        sdk=headers_data['device-sdk'],
+                        serial=headers_data['device-serial'],
+                        latitude=headers_data['device-lot'],
+                        longitude=headers_data['device-lng'],
+                    )
+                else:
+                    session.name = headers_data['device-name']
+                    session.version = headers_data['device-version']
+                    session.mac = headers_data['device-mac']
+                    session.ip = get_client_ip(request)
+                    session.sdk = headers_data['device-sdk']
+                    session.latitude = headers_data['device-lot']
+                    session.longitude = headers_data['device-lng']
+                    session.save()
 
                 org_data = {
                     'id': device_owner_org.id,
@@ -86,7 +100,7 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
                 }
 
                 return Response({
-                    "message": "login success - session activated",
+                    "message": "خوش آمدید",
                     "device_identity": device.device_identity,
                     "serial": device.serial,
                     "password": device.password,
@@ -95,30 +109,32 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
                     "device_owner": org_data,
                     "device_owner_users": get_users_of_organization(device_owner_org)  
                 }, status=status.HTTP_200_OK)
-
+ 
             return Response({
-                "message": "device pre registered - unauthorized",
+                "message": "دستگاه در سیستم ثبت در انتظار فعال سازی توسط پذیرنده می باشد",
                 "device_identity": device.device_identity,
-                "password": device.password,
+                "password": "****",
                 "serial": device.serial,
                 "provider": organization.name,
                 "provider_tell": '0214021',
             }, status=status.HTTP_401_UNAUTHORIZED)
+        
+        else:
+            pre_device = pos_models.Device.objects.create(
+                serial=serial,
+                mac=mac,
+                organization=organization,
+                pre_registered=True,
+                is_activated=False
+            )
 
-        pre_device = pos_models.Device.objects.create(
-            serial=serial,
-            organization=organization,
-            pre_registered=True,
-            is_activated=False
-        )
-
-        return Response({
-            "message": "device pre-registered",
-            "device_identity": pre_device.device_identity,
-            "password": pre_device.password,
-            "provider": organization.name,
-            "provider_tell": '0214021',
-        }, status=status.HTTP_412_PRECONDITION_FAILED)
+            return Response({
+                "message": "دستگاه در سیستم ثبت در انتظار فعال سازی توسط پذیرنده می باشد",
+                "device_identity": pre_device.device_identity,
+                "password": "****",
+                "provider": organization.name,
+                "provider_tell": '0214021',
+            }, status=status.HTTP_412_PRECONDITION_FAILED)
 
     @action(
         methods=['post'],