first push

panel/ProvinceOperator/services/pos_transfer_service.py

@@ -0,0 +1,71 @@
+import secrets
+
+from panel.models import POSAuditLog, POSAccessLevel, POSMachine
+from django.db import transaction
+
+
+def make_unique_id():
+    while True:
+        random_number = ''.join(str(secrets.randbelow(10)) for _ in range(6))
+        if not POSMachine.objects.filter(pos_unique_id=random_number).exists():
+            return random_number
+
+
+class POSTransferService:
+    ACTION_MAP = {
+        'owner': 'CHANGE_OWNER',
+        'current_user': 'CHANGE_CURRENT_USER',
+        'representative': 'CHANGE_REPRESENTATIVE',
+    }
+
+    @staticmethod
+    @transaction.atomic
+    def transfer(pos, recipient_type, recipient, performed_by):
+        old_state = {
+            "owner": pos.owner_id,
+            "current_user": pos.current_user_id,
+            "current_representative": pos.current_representative_id,
+        }
+
+        pos.current_user = None
+        pos.current_representative = None
+
+        if recipient_type == 'owner':
+            pos.owner = recipient
+            pos.current_user = None
+            pos.current_representative = None
+            if not pos.pos_unique_id:
+                pos.pos_unique_id = make_unique_id()
+        elif recipient_type == 'current_user':
+            pos.current_user = recipient
+            pos.current_representative = None
+
+        elif recipient_type == 'representative':
+            pos.current_representative = recipient
+            pos.current_user = None
+
+        pos.save()
+
+        if recipient_type == 'owner':
+            POSAccessLevel.objects.filter(pos=pos).delete()
+            user_roles = recipient.role.all()
+            for role in user_roles:
+                if role.name in ['KillHouse', 'Steward', 'Guilds']:
+                    POSAccessLevel.objects.create(
+                        pos=pos,
+                        name=role.name
+                    )
+
+        POSAuditLog.objects.create(
+            pos=pos,
+            action=POSTransferService.ACTION_MAP[recipient_type],
+            performed=performed_by,
+            old_value=old_state,
+            new_value={
+                "recipient_type": recipient_type,
+                "recipient_id": recipient.id
+            },
+            description="انتقال دستگاه پوز"
+        )
+
+        return pos