From dea03d90991797619523b0ea09a8451a64febc39 Mon Sep 17 00:00:00 2001
From: sm4640 <s1m0611@naver.com>
Date: Sat, 12 Apr 2025 01:53:23 +0900
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---
 portfolios/views.py | 106 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 104 insertions(+), 2 deletions(-)

diff --git a/portfolios/views.py b/portfolios/views.py
index 91ea44a..a7a2e08 100644
--- a/portfolios/views.py
+++ b/portfolios/views.py
@@ -1,3 +1,105 @@
-from django.shortcuts import render
+from django.shortcuts import get_object_or_404
 
-# Create your views here.
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework import status
+
+from .models import *
+
+from django_filters.rest_framework import DjangoFilterBackend
+from rest_framework.filters import OrderingFilter
+from rest_framework.generics import ListAPIView
+from .serializers import PortfolioListViewSerializer, PortfolioCreateSerializer
+from .paginations import PortfolioPagination
+from .filters import PortfolioFilter
+from .services import PortfolioStateChangeService, PortfolioBeforeRelCheckService
+
+from django.db import transaction
+
+
+class PortfolioListView(ListAPIView):
+    queryset = Portfolio.objects.filter(is_published=True).order_by('-created_at')
+    serializer_class = PortfolioListViewSerializer
+    pagination_class = PortfolioPagination
+    filterset_class = PortfolioFilter
+    filter_backends = [DjangoFilterBackend, OrderingFilter]
+    ordering_fields = ['view_count', 'like_count', 'scrap_count', 'created_at']  # 허용할 필드 추천순 제외
+    ordering = ['-created_at']  # 기본 정렬은 최신순
+
+class PortfolioCreateAPIView(APIView):
+    @transaction.atomic
+    def post(self, request):
+        data = request.data.copy()
+        data['owner'] = request.user.id
+        serializer = PortfolioCreateSerializer(data=data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response({"message": "create portfolio success"}, status=status.HTTP_200_OK)
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+    
+class PortfolioDeleteAPIView(APIView):
+    @transaction.atomic
+    def delete(self, request, pk):
+        user = request.user
+        portfolio = get_object_or_404(Portfolio, id=pk)
+        if user != portfolio.owner:
+            return Response({"message": "Not owner"}, status=status.HTTP_403_FORBIDDEN)
+        portfolio.delete()
+        return Response({"message": "delete success"}, status=status.HTTP_200_OK)
+        
+class PortfolioSetRepresentAPIView(APIView):
+    @transaction.atomic
+    def patch(self, request, pk):
+        user = request.user
+        portfolio = get_object_or_404(Portfolio, id=pk)
+        if user != portfolio.owner:
+            return Response({"message": "Not owner"}, status=status.HTTP_403_FORBIDDEN)
+        if before_represent := Portfolio.objects.filter(owner=user, is_represent=True).first():
+            before_represent.is_represent = False
+        portfolio.is_represent = True
+        return Response({"message": "change represent success"}, status=status.HTTP_200_OK)
+
+
+class PortfolioSetPublishAPIView(APIView):
+    @transaction.atomic
+    def patch(self, request, pk):
+        user = request.user
+        portfolio = get_object_or_404(Portfolio, id=pk)
+        if user != portfolio.owner:
+            return Response({"message": "Not owner"}, status=status.HTTP_403_FORBIDDEN)
+        portfolio.is_published = True
+        portfolio.save()
+        return Response({"message": "publish success"}, status=status.HTTP_200_OK)
+
+class PortfolioChangeState(APIView):
+    @transaction.atomic
+    def patch(self, request, pk):
+        portfolio = get_object_or_404(Portfolio, pk=pk)
+        user = request.user
+        action_type = request.query_params.get('type')
+        if PortfolioBeforeRelCheckService.check_user_portfolio_rel(action_type, portfolio, user):
+            return Response({"message": "already done"}, status=status.HTTP_400_BAD_REQUEST)
+        return self._handle_action(action_type, portfolio, user, add=True)
+
+    @transaction.atomic
+    def delete(self, request, pk):
+        portfolio = get_object_or_404(Portfolio, pk=pk)
+        user = request.user
+        action_type = request.query_params.get('type')
+        if not PortfolioBeforeRelCheckService.check_user_portfolio_rel(action_type, portfolio, user):
+            return Response({"message": "never done before"}, status=status.HTTP_400_BAD_REQUEST)
+        return self._handle_action(action_type, portfolio, user, add=False)
+
+    def _handle_action(self, action_type, portfolio, user, add=True):
+        if not action_type:
+            return Response({'message': 'Missing action type'}, status=status.HTTP_400_BAD_REQUEST)
+
+        try:
+            PortfolioStateChangeService.change_user_portfolio_rel(action_type, portfolio, user, add)
+            PortfolioStateChangeService.change_count_portfolio_state(action_type, portfolio, add)
+        except ValueError as e:
+            return Response({'message': str(e)}, status=status.HTTP_400_BAD_REQUEST)
+
+        return Response({
+            'message': f'{action_type} {"added" if add else "removed"}'
+        }, status=status.HTTP_200_OK)
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