fix

core/apps/counterparty/urls.py

@@ -18,6 +18,7 @@ urlpatterns = [
             path("<uuid:id>/", cp_views.CounterpartyDetailApiView.as_view()),
             path('<uuid:id>/un_archive/', cp_views.UnArchiveCounterpartyApiView.as_view()),
             path('all/', cp_views.AllCounterpartyListApiView.as_view()),
+            path("<uuid:id>/statistics/", cp_views.CounterpartyStatisticsApiView.as_view()),
         ]
     )),
     path('counterparty_folder/', include(

core/apps/counterparty/views/counterparty.py

@@ -10,6 +10,7 @@ from core.apps.shared.paginations.custom import CustomPageNumberPagination
 from core.apps.counterparty.models import Counterparty, CounterpartyFolder
 from core.apps.counterparty.serializers import counterparty as serializers
 from core.apps.counterparty.filters.counterparty import CounterpartyFilter
+from core.apps.finance.models import Expence, Income
 
 
 class CounterpartyListApiView(generics.ListAPIView):
@@ -176,3 +177,85 @@ class AllCounterpartyListApiView(generics.GenericAPIView):
         if page is not None:
             serializer = self.serializer_class(page, many=True)
             return self.get_paginated_response(serializer.data)
+
+
+class CounterPartyIncomeExpenceStatisticsApiView(views.APIView):
+    permission_classes = [HasRolePermission]
+
+    def get(self, request, id):
+        counterparty = get_object_or_404(Counterparty, id=id)
+        incomes = Income.objects.filter(
+            counterparty=counterparty, 
+            is_deleted=False
+        )
+        expences = Expence.objects.filter(
+            counterparty=counterparty, 
+            is_deleted=False,
+        )
+        income_by_currency = {}
+        expence_by_currency = {}
+        
+        for income in incomes:
+            currency = income.currency
+            amount = income.price
+            
+            if currency not in income_by_currency:
+                income_by_currency[currency] = {
+                    'total': 0,
+                    'count': 0,
+                    'amount_uzs': 0
+                }
+            
+            income_by_currency[currency]['total'] += amount
+            income_by_currency[currency]['count'] += 1
+            
+            if currency == 'usd':
+                income_by_currency[currency]['amount_uzs'] += amount * income.exchange_rate
+            else:
+                income_by_currency[currency]['amount_uzs'] += amount
+        
+        for expence in expences:
+            currency = expence.currency
+            amount = expence.price
+            
+            if currency not in expence_by_currency:
+                expence_by_currency[currency] = {
+                    'total': 0,
+                    'count': 0,
+                    'amount_uzs': 0
+                }
+            
+            expence_by_currency[currency]['total'] += amount
+            expence_by_currency[currency]['count'] += 1
+            
+            if currency == 'usd':
+                expence_by_currency[currency]['amount_uzs'] += amount * expence.exchange_rate
+            else:
+                expence_by_currency[currency]['amount_uzs'] += amount
+        
+        total_income_uzs = sum(data['amount_uzs'] for data in income_by_currency.values())
+        total_expence_uzs = sum(data['amount_uzs'] for data in expence_by_currency.values())
+        balance = total_income_uzs - total_expence_uzs
+        
+        data = {
+            'counterparty': {
+                'id': counterparty.id,
+                'name': counterparty.name,
+            },
+            'income': {
+                'by_currency': income_by_currency,
+                'total_uzs': total_income_uzs,
+                'total_count': sum(data['count'] for data in income_by_currency.values())
+            },
+            'expence': {
+                'by_currency': expence_by_currency,
+                'total_uzs': total_expence_uzs,
+                'total_count': sum(data['count'] for data in expence_by_currency.values())
+            },
+            'balance': {
+                'uzs': balance,
+                'status': 'positive' if balance > 0 else 'negative' if balance < 0 else 'zero'
+            }
+        }
+        
+        return Response(data, status=status.HTTP_200_OK)