Merge pull request #24 from Django-Wanted-Internship-3-Team/feature/i…

…ssue-010

게시물 상세 API 작성

posts/apps.py

@@ -4,3 +4,6 @@
 class PostsConfig(AppConfig):
     default_auto_field = "django.db.models.BigAutoField"
     name = "posts"
+
+    def ready(self):
+        import posts.signals  # noqa

posts/serializers.py

@@ -74,3 +74,23 @@ class PostQuerySerializer(serializers.Serializer):
         help_text="created_at, updated_at, view_count, like_count, share_count를 기준으로 오름차순/내림차순으로 정렬하여 조회합니다. (default: created_at)",
     )
     hashtag = serializers.CharField(required=False, help_text="조회할 해시태그입니다. (default: 본인계정)")
+
+
+class PostDetailSerializer(serializers.ModelSerializer):
+    hashtag = HashTagSerializer(many=True, read_only=True)
+
+    class Meta:
+        model = Post
+        fields = [
+            "content_id",
+            "post_type",
+            "title",
+            "content",
+            "view_count",
+            "like_count",
+            "share_count",
+            "created_at",
+            "updated_at",
+            "hashtag",
+            "user",
+        ]

posts/signals.py

@@ -0,0 +1,10 @@
+from django.db.models.signals import pre_save
+from django.dispatch import receiver
+
+from posts.models import Post
+
+
+@receiver(pre_save, sender=Post)
+def increment_view_count(sender, instance, **kwargs):
+    # 게시글을 조회할 때 조회수 증가
+    instance.view_count += 1

posts/tests/views/test_posts_detail_view.py

@@ -0,0 +1,84 @@
+import uuid
+
+from django.contrib.auth import get_user_model
+from django.db import transaction
+from django.urls import reverse
+from django.utils import timezone
+from rest_framework import status
+from rest_framework.test import APITestCase
+
+from posts.models import HashTag, Post
+
+User = get_user_model()
+
+
+class PostDetailViewTest(APITestCase):
+    @classmethod
+    def setUpTestData(cls):
+        # 테스트 사용자 생성
+        cls.user = User.objects.create_user(username="testuser1", password="testpass1", email="test1@email.com")
+
+        # 테스트 해시태그 생성
+        cls.hashtag = HashTag.objects.create(name="hashtag1")
+
+        # 테스트 게시물 생성 및 content_id 저장
+        cls.content_ids = []
+
+        # 테스트 게시물 생성
+        for i in range(1, 6):
+            post = Post.objects.create(
+                content_id=uuid.uuid4(),
+                user=cls.user,
+                post_type="facebook",
+                title=f"test title {i}",
+                content=f"test content {i}",
+                view_count=10 * i,
+                like_count=5 * i,
+                share_count=2 * i,
+                created_at=timezone.now(),
+                updated_at=timezone.now(),
+            )
+            post.hashtag.set([cls.hashtag])
+            cls.content_ids.append(str(post.content_id))
+
+    def setUp(self):
+        pass
+
+    def test_get_existing_post_content_id(self):
+        response = self.client.get(
+            path=reverse("post-detail", kwargs={"content_id": self.content_ids[0]}),
+            data={"type": "all", "hashtag": self.hashtag.id, "ordering": "created_at", "search": ""},
+        )
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    def test_get_not_existing_post_content_id(self):
+        non_existing_content_id = "00000000-0000-0000-0000-000000000001"
+        response = self.client.get(
+            path=reverse("post-detail", kwargs={"content_id": non_existing_content_id}),
+            data={"type": "all", "hashtag": self.hashtag.id, "ordering": "created_at", "search": ""},
+        )
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+
+    def test_increment_view_count(self):
+        content_id = self.content_ids[0]
+
+        # 현재 조회수 가져오기
+        # 초기값 - 1 (조회와 동시에 count가 됨)
+        post = Post.objects.get(content_id=content_id)
+        initial_view_count = post.view_count - 1
+
+        # 게시물 조회
+        with transaction.atomic():
+            response = self.client.get(
+                path=reverse("post-detail", kwargs={"content_id": content_id}),
+                data={"type": "all", "hashtag": self.hashtag.id, "ordering": "created_at", "search": ""},
+            )
+
+        # 조회수 업데이트 확인
+        post.refresh_from_db()
+        updated_view_count = post.view_count
+
+        print("initial_view_count", initial_view_count)
+
+        self.assertEqual(updated_view_count, initial_view_count + 1)
+        self.assertEqual(response.status_code, status.HTTP_200_OK)

posts/urls.py

@@ -1,8 +1,9 @@
 from django.urls import path
 
-from posts.views import PostListView, StatisticsListView
+from posts.views import PostDetailView, PostListView, StatisticsListView
 
 urlpatterns = [
     path("statistics/", StatisticsListView.as_view(), name="statistics"),
     path("", PostListView.as_view(), name="list"),
+    path("<str:content_id>/", PostDetailView.as_view(), name="post-detail"),
 ]

posts/views.py

@@ -3,6 +3,7 @@
 from django.db.models import Count, Q, Sum
 from django.db.models.functions import TruncDay, TruncHour
 from django.db.models.query import QuerySet
+from django.shortcuts import get_object_or_404
 from drf_yasg.utils import swagger_auto_schema
 from rest_framework import status
 from rest_framework.pagination import LimitOffsetPagination
@@ -18,6 +19,7 @@
 from posts.models import Post
 from posts.paginations import PaginationHandlerMixin
 from posts.serializers import (
+    PostDetailSerializer,
     PostListSerializer,
     PostQuerySerializer,
     StatisticsListSerializer,
@@ -210,3 +212,20 @@ def get_ordering(self, posts: QuerySet[Post], ordering: str) -> QuerySet[Post]:
             return posts.order_by(ordering)
         else:
             raise InvalidParameterException(f"ordering 값 {ordering}를 잘못 선택하셨습니다.")
+
+
+class PostDetailView(APIView):
+    # @TODO: IsAuthenticated로 변경 @simseulnyang
+    permission_classes = [AllowAny]
+
+    @swagger_auto_schema(
+        operation_summary="content_id에 해당하는 게시글 상세 조회",
+        responses={
+            status.HTTP_200_OK: PostDetailSerializer,
+        },
+    )
+    def get(self, request: Request, content_id: str) -> Response:
+        post = get_object_or_404(Post, content_id=content_id)
+        serializer = PostDetailSerializer(post)
+
+        return Response(serializer.data, status=status.HTTP_200_OK)