counterparty: counterparty akt api added

core/apps/counterparty/views/counterparty.py

@@ -18,6 +18,11 @@ from core.apps.counterparty.serializers import counterparty as serializers
 from core.apps.counterparty.filters.counterparty import CounterpartyFilter
 # finance
 from core.apps.finance.models import Expence, Income
+from core.apps.finance.serializers.income import IncomeListSerializer
+from core.apps.finance.serializers.expence import ExpenceListSerializer
+# orders
+from core.apps.orders.models import Party
+from core.apps.orders.serializers.party import PartyDetailSerializer
 
 
 class CounterpartyListApiView(generics.ListAPIView):
@@ -264,4 +269,79 @@ class CounterPartyIncomeExpenceStatisticsApiView(views.APIView):
             }
         }
 
-        return Response(data, status=200)
+        return Response(data, status=200)
+    
+
+
+class CounterpartyAKTApiView(views.APIView):
+    permission_classes = [HasRolePermission]
+
+    def get(self, request, id):
+        # TODO: filterlar
+        date = request.query_params.get('date', None)
+        end_date = request.query_params.get('end_date', None)
+        project_folder = request.query_params.getlist('folder', None)
+        project = request.query_params.getlist('project', None)
+        currency = request.query_params.get('currency', 'uzs')       
+
+        counterparty = get_object_or_404(Counterparty, id=id)
+        parties = Party.objects.filter(
+            orders__counterparty=counterparty, is_deleted=False, process=100, payment_percentage=100
+        ).distinct().order_by('-created_at')
+        expences = Expence.objects.filter(counterparty=counterparty, is_deleted=False).distinct().order_by('-created_at')
+        incomes = Income.objects.filter(counterparty=counterparty, is_deleted=False).distinct().order_by('-created_at')
+
+        # TODO: date va end date boyicha filter
+        if date:
+            parties = parties.filter(close_date__gte=date)
+            expences = expences.filter(created_at__gte=date)
+            incomes = incomes.filter(created_at__gte=date)
+        if end_date:
+            parties = parties.filter(close_date__lte=end_date)
+            expences = expences.filter(created_at__lte=end_date)
+            incomes = incomes.filter(created_at__lte=end_date)
+        
+        # TODO: project folder va project boyicha filter
+        if project_folder:
+            parties = parties.filter(orders__project_folder=project_folder).distinct()
+            expences = expences.filter(project_folder=project_folder)
+            incomes = incomes.filter(project_folder=project_folder)
+        if project:
+            parties = parties.filter(orders__project=project).distinct()
+            expences = expences.filter(project=project)
+            incomes = incomes.filter(project=project)
+        
+        # TODO: currency boyicha filter
+        if currency:
+            parties = parties.filter(currency=currency)
+            expences = expences.filter(currency=currency)
+            incomes = incomes.filter(currency=currency)
+        
+        # TODO: total kreditni hisoblash kerak: Sum(party total_price) + Sum(income total_price)
+        parties_total_price = parties.aggregate(total_price=Sum('party_amount__total_price'))['total_price'] or 0
+        income_total_price = incomes.aggregate(total_price=Sum('price'))['total_price'] or 0
+        total_kredit = Decimal(parties_total_price) + Decimal(income_total_price)
+
+        # TODO: total debitni hisoblash kerak: Sum(expence total_price) 
+        expence_total_balance = expences.aggregate(total_price=Sum('price'))['total_price'] or 0
+        total_debit = expence_total_balance
+
+        # TODO: final balanceni hisoblash kerak: total_kredit - total_debit = final balance => negative or positive
+        final_balance = total_kredit - total_debit
+
+        # TODO: final balance typeni topish kerak -> debit or kredit: if negative == debit, positive == kredit
+        type = 'debit' if final_balance < 0 else 'kredit'
+
+        response = {
+            "parties": PartyDetailSerializer(parties, many=True).data,
+            "expences": ExpenceListSerializer(expences, many=True).data,
+            "incomes": IncomeListSerializer(incomes, many=True).data,
+            "total_kredit": str(total_kredit),
+            "total_debit": str(total_debit),
+            "final_balance": {
+                "balance": str(final_balance) if not str(final_balance).startswith('-') else str(final_balance).replace('-', ''),
+                "type": type, 
+            }
+        }
+
+        return Response(response, status=200)