feat: 初始化工程

service/like_service.py

@@ -0,0 +1,46 @@
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from models.family import Likes
+from schemas.like import LikeCreate
+from service.record_service import get_record_by_id
+
+
+def get_like(db: Session, record_id: int, user_id: int) -> Likes | None:
+    result = db.execute(
+        select(Likes).where(Likes.record_id == record_id, Likes.user_id == user_id)
+    )
+    return result.scalar_one_or_none()
+
+
+def create_like(db: Session, like_dto: LikeCreate) -> bool:
+    exist = get_like(db, like_dto.record_id, like_dto.user_id)
+    if exist:
+        return False
+
+    like = Likes(**like_dto.model_dump())
+    db.add(like)
+
+    record = get_record_by_id(db, like_dto.record_id)
+    if record:
+        record.like_count = (record.like_count or 0) + 1
+
+    db.commit()
+
+    return True
+
+
+def delete_like(db: Session, record_id: int, user_id: int) -> bool:
+    like = get_like(db, record_id, user_id)
+    if not like:
+        return False
+
+    db.delete(like)
+
+    record = get_record_by_id(db, record_id)
+    if record and record.like_count and record.like_count > 0:
+        record.like_count -= 1
+
+    db.commit()
+
+    return True