from rest_framework import permissions, viewsets

from apps.api.serializers import (
    TransactionSerializer,
    TransactionCategorySerializer,
    TransactionTagSerializer,
    InstallmentPlanSerializer,
)
from apps.transactions.models import (
    Transaction,
    TransactionCategory,
    TransactionTag,
    InstallmentPlan,
)
from apps.rules.signals import transaction_updated, transaction_created


class TransactionViewSet(viewsets.ModelViewSet):
    queryset = Transaction.objects.all()
    serializer_class = TransactionSerializer

    def perform_create(self, serializer):
        instance = serializer.save()
        transaction_created.send(sender=instance)

    def perform_update(self, serializer):
        instance = serializer.save()
        transaction_updated.send(sender=instance)


class TransactionCategoryViewSet(viewsets.ModelViewSet):
    queryset = TransactionCategory.objects.all()
    serializer_class = TransactionCategorySerializer


class TransactionTagViewSet(viewsets.ModelViewSet):
    queryset = TransactionTag.objects.all()
    serializer_class = TransactionTagSerializer


class InstallmentPlanViewSet(viewsets.ModelViewSet):
    queryset = InstallmentPlan.objects.all()
    serializer_class = InstallmentPlanSerializer

    def perform_create(self, serializer):
        instance = serializer.save()
        instance.create_transactions()

    def perform_update(self, serializer):
        instance = serializer.save()
        instance.create_transactions()