feat(repository.py): add repository

repository.py

@@ -0,0 +1,26 @@
+from sqlalchemy import select
+
+from database import new_session, TaskOrm
+from schemas import STaskAdd, STask
+
+
+class TaskRepository:
+    @classmethod
+    async def add_one(cls, data: STaskAdd) -> int:
+        async with new_session() as session:
+            task_dict = data.model_dump()
+
+            task = TaskOrm(**task_dict)
+            session.add(task)
+            await session.flush()
+            await session.commit()
+            return task.id
+
+    @classmethod
+    async def find_all(cls) -> list[STask]:
+        async with new_session() as session:
+            query = select(TaskOrm)
+            result = await session.execute(query)
+            task_models = result.scalars().all()
+            task_schemas = [STask.model_validate(task_model) for task_model in task_models]
+            return task_schemas