forum

backend/community/views.py

@@ -2,13 +2,15 @@ from rest_framework import viewsets, status, mixins, parsers, filters
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.decorators import action
 from rest_framework.response import Response
-from rest_framework import serializers
+from rest_framework import serializers, permissions
 from django.core.signing import TimestampSigner, BadSignature, SignatureExpired
+from django.utils import timezone
+from django.db import models
 from drf_spectacular.utils import extend_schema
 
 from shop.models import WeChatUser
-from .models import Activity, ActivitySignup, Topic, Reply, TopicMedia
-from .serializers import ActivitySerializer, ActivitySignupSerializer, TopicSerializer, ReplySerializer, TopicMediaSerializer
+from .models import Activity, ActivitySignup, Topic, Reply, TopicMedia, Announcement
+from .serializers import ActivitySerializer, ActivitySignupSerializer, TopicSerializer, ReplySerializer, TopicMediaSerializer, AnnouncementSerializer
 
 def get_current_wechat_user(request):
     """
@@ -87,6 +89,13 @@ class TopicViewSet(viewsets.ModelViewSet):
             return Response({'error': '请先登录'}, status=401)
         return super().create(request, *args, **kwargs)
 
+    def retrieve(self, request, *args, **kwargs):
+        instance = self.get_object()
+        instance.view_count += 1
+        instance.save(update_fields=['view_count'])
+        serializer = self.get_serializer(instance)
+        return Response(serializer.data)
+
 class ReplyViewSet(viewsets.ModelViewSet):
     """
     帖子回复接口
@@ -105,12 +114,13 @@ class ReplyViewSet(viewsets.ModelViewSet):
             return Response({'error': '请先登录'}, status=401)
         return super().create(request, *args, **kwargs)
 
-class TopicMediaViewSet(viewsets.GenericViewSet, mixins.CreateModelMixin):
+import requests
+
+class TopicMediaViewSet(viewsets.ViewSet):
     """
-    论坛多媒体资源上传接口
+    论坛多媒体资源上传接口 (代理到外部OSS服务)
     """
-    queryset = TopicMedia.objects.all()
-    serializer_class = TopicMediaSerializer
+    permission_classes = [] # 内部鉴权
     parser_classes = [parsers.MultiPartParser, parsers.FormParser]
 
     @extend_schema(summary="上传媒体文件 (返回URL用于Markdown)")
@@ -119,6 +129,57 @@ class TopicMediaViewSet(viewsets.GenericViewSet, mixins.CreateModelMixin):
         if not user:
             return Response({'error': '请先登录'}, status=401)
             
-        # 允许上传时不关联 Topic (发帖前上传)，或后续关联
-        # 主要是返回 url
-        return super().create(request, *args, **kwargs)
+        file_obj = request.FILES.get('file')
+        if not file_obj:
+            return Response({'error': '未提供文件'}, status=400)
+            
+        # 转发到外部 OSS 上传服务
+        upload_url = "https://data.tangledup-ai.com/upload?folder=uploads%2Fmarket%2Fforum_image"
+        files = {'file': (file_obj.name, file_obj, file_obj.content_type)}
+        
+        try:
+            # 这里的 headers 不需要 Content-Type，requests 会自动设置 multipart/form-data
+            response = requests.post(upload_url, files=files, timeout=30)
+            
+            if response.status_code == 200:
+                data = response.json()
+                if data.get('success'):
+                    # Create TopicMedia record
+                    media_type = 'image' if 'image' in file_obj.content_type else 'video'
+                    media_obj = TopicMedia.objects.create(
+                        file_url=data.get('file_url'),
+                        media_type=media_type,
+                        # topic will be associated later
+                    )
+                    
+                    # 返回符合前端预期的格式
+                    return Response({
+                        'id': media_obj.id, # Return real DB ID
+                        'file': media_obj.file_url,
+                        'media_type': media_obj.media_type,
+                        'created_at': media_obj.created_at
+                    })
+                else:
+                     return Response({'error': '外部服务上传失败', 'detail': data}, status=400)
+            else:
+                return Response({'error': f'上传服务响应错误: {response.status_code}', 'detail': response.text}, status=502)
+                
+        except Exception as e:
+            return Response({'error': str(e)}, status=500)
+
+class AnnouncementViewSet(viewsets.ReadOnlyModelViewSet):
+    """
+    社区公告接口
+    """
+    queryset = Announcement.objects.all()
+    serializer_class = AnnouncementSerializer
+    permission_classes = [permissions.AllowAny]
+
+    def get_queryset(self):
+        now = timezone.now()
+        qs = Announcement.objects.filter(is_active=True)
+        # Filter by start_time (if set, must be <= now)
+        qs = qs.filter(models.Q(start_time__isnull=True) | models.Q(start_time__lte=now))
+        # Filter by end_time (if set, must be >= now)
+        qs = qs.filter(models.Q(end_time__isnull=True) | models.Q(end_time__gte=now))
+        return qs.order_by('-is_pinned', '-priority', '-created_at')