Feat/post likes users

app/like/repository.py

@@ -3,6 +3,7 @@
 
 from app.database.deps import SessionDep
 from app.like.tables import comment_like_table, post_like_table
+from app.users.models import User
 from app.utils.dependency import dependency
 
 
@@ -51,6 +52,18 @@ async def remove_all_by_user(self, *, user_id: int):
             delete(post_like_table).where(post_like_table.c.user_id == user_id)
         )
 
+    async def find_users_by_post_id(self, *, post_id: int) -> list[User]:
+        result = await self.session.scalars(
+            select(User)
+            .join(post_like_table, User.id == post_like_table.c.user_id)
+            .where(
+                post_like_table.c.post_id == post_id,
+                User.deleted_at.is_(None),
+            )
+            .order_by(User.id)
+        )
+        return list(result.all())
+
 
 @dependency
 class CommentLikeRepository:

app/posts/router.py

@@ -10,6 +10,7 @@
 from app.core.router import create_router
 from app.storage.schemas import ImageUrl
 from app.storage.service import ImageMetadata, create_presigned_upload_url
+from app.users.schemas import UserRead
 
 from .schemas import (
     PostCompactRead,
@@ -158,3 +159,14 @@ async def unlike_post(
         post_id=post_id,
         current_user=current_user,
     )
+
+
+@router.get("/{post_id}/liked-users", status_code=status.HTTP_200_OK)
+async def read_post_liked_users(
+    post_service: PostService,
+    post_id: int,
+    current_user: CurrentUser,
+) -> list[UserRead]:
+    return await post_service.get_post_liked_users(
+        post_id=post_id, current_user=current_user
+    )

app/posts/service.py

@@ -12,6 +12,7 @@
 from app.storage.deps import S3ClientDep
 from app.storage.service import get_image_metadata
 from app.users.models import User
+from app.users.schemas import UserRead
 from app.utils.dependency import dependency
 
 from .models import Post, PostImage
@@ -280,3 +281,15 @@ async def unlike_post(self, *, post_id: int, current_user: User):
             user_id=current_user.id,
             post_id=post_id,
         )
+
+    async def get_post_liked_users(
+        self, *, post_id: int, current_user: User
+    ) -> list[UserRead]:
+        post = await self.post_repository.find_by_id(post_id=post_id)
+        if not post:
+            raise HTTPException(status_code=404, detail="게시물을 찾을 수 없습니다.")
+
+        users = await self.post_like_repository.find_users_by_post_id(post_id=post_id)
+        return [
+            UserRead.from_user(user, current_user_id=current_user.id) for user in users
+        ]