Add clamp connection

app/crud/clamp_connection.py

@@ -0,0 +1,50 @@
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.clamp_connection import ClampConnection
+
+
+async def get(db: AsyncSession, clamp_connection_id: int) -> ClampConnection | None:
+    return await db.get(ClampConnection, clamp_connection_id)
+
+
+async def list_all(
+    db: AsyncSession, skip: int = 0, limit: int = 100
+) -> list[ClampConnection]:
+    result = await db.execute(
+        select(ClampConnection)
+        .order_by(ClampConnection.min_mm.nulls_last(), ClampConnection.min_in.nulls_last())
+        .offset(skip)
+        .limit(limit)
+    )
+    return list(result.scalars().all())
+
+
+async def create(
+    db: AsyncSession,
+    *,
+    min_mm: float | None,
+    max_mm: float | None,
+    min_in: float | None,
+    max_in: float | None,
+) -> ClampConnection:
+    cc = ClampConnection(min_mm=min_mm, max_mm=max_mm, min_in=min_in, max_in=max_in)
+    db.add(cc)
+    await db.commit()
+    await db.refresh(cc)
+    return cc
+
+
+async def update(
+    db: AsyncSession, cc: ClampConnection, data: dict
+) -> ClampConnection:
+    for field, value in data.items():
+        setattr(cc, field, value)
+    await db.commit()
+    await db.refresh(cc)
+    return cc
+
+
+async def delete(db: AsyncSession, cc: ClampConnection) -> None:
+    await db.delete(cc)
+    await db.commit()