feat: add workspace

src/usecase/workspace/create_workspace.py

@@ -0,0 +1,28 @@
+import uuid
+from typing import TYPE_CHECKING
+
+from src import domain, dto
+
+if TYPE_CHECKING:
+    from .. import Usecase
+
+
+async def create_workspace(
+    self: 'Usecase', user_id: uuid.UUID, input: dto.CreateWorkspaceInput
+) -> dto.CreateWorkspaceOutput:
+    user = await self.database.get_user(user_id=user_id)
+    if not user:
+        raise domain.UserNotFound(user_id)
+
+    workspace = domain.Workspace(
+        name=input.name,
+    )
+
+    async with self.database.transaction():
+        await self.database.create_workspace(workspace)
+        await self.database.add_user_to_workspace(workspace.id, user_id)
+
+    return dto.CreateWorkspaceOutput(
+        id=workspace.id,
+        name=workspace.name,
+    )