first commit

backend/app/repositories/case_repo.py

@@ -0,0 +1,35 @@
+from sqlalchemy import select, func, or_
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.case import Case, CaseStatus
+from app.repositories.base import BaseRepository
+
+
+class CaseRepository(BaseRepository[Case]):
+    def __init__(self, session: AsyncSession):
+        super().__init__(Case, session)
+
+    async def list_cases(
+        self,
+        offset: int = 0,
+        limit: int = 50,
+        status: CaseStatus | None = None,
+        search: str | None = None,
+    ) -> tuple[list[Case], int]:
+        query = select(Case).where(Case.deleted_at.is_(None))
+        count_query = select(func.count()).select_from(Case).where(Case.deleted_at.is_(None))
+
+        if status:
+            query = query.where(Case.status == status)
+            count_query = count_query.where(Case.status == status)
+
+        if search:
+            pattern = f"%{search}%"
+            search_filter = or_(Case.case_no.ilike(pattern), Case.title.ilike(pattern))
+            query = query.where(search_filter)
+            count_query = count_query.where(search_filter)
+
+        total = (await self.session.execute(count_query)).scalar() or 0
+        query = query.order_by(Case.created_at.desc()).offset(offset).limit(limit)
+        result = await self.session.execute(query)
+        return list(result.scalars().all()), total