feat: cards, attributes and modules

card_attributes/handlers/card_attributes_query_handler.py

@@ -0,0 +1,37 @@
+from typing import Optional
+
+from sqlalchemy import select
+from sqlalchemy.orm import joinedload, selectinload
+
+from card_attributes.handlers.base_handler import BaseHandler
+from models import Attribute, project_attribute, card_relations
+
+
+class CardAttributesQueryHandler(BaseHandler):
+    async def get_attributes_for_project(self, project_id: int) -> list[Attribute]:
+        stmt = (
+            select(Attribute)
+            .join(project_attribute, project_attribute.c.attribute_id == Attribute.id)
+            .where(project_attribute.c.project_id == project_id)
+        )
+        attributes = (await self.session.scalars(stmt)).all()
+        return list(attributes)
+
+    async def get_attr_by_name(self, attr_name: str) -> Optional[Attribute]:
+        stmt = (
+            select(Attribute)
+            .options(
+                selectinload(Attribute.projects),
+            )
+            .where(Attribute.name == attr_name)
+        )
+        attribute = (await self.session.scalars(stmt)).first()
+        return attribute
+
+    async def get_card_ids_by_group_id(self, group_id: int) -> list[int]:
+        stmt = (
+            select(card_relations.c.card_id)
+            .where(card_relations.c.group_id == group_id)
+        )
+        ids = await self.session.scalars(stmt)
+        return list(ids)