1 files changed, 25 insertions, 0 deletions
diff --git a/thallium-backend/src/dto/users.py b/thallium-backend/src/dto/users.py
new file mode 100644
index 0000000..0d1cdac
--- /dev/null
+++ b/thallium-backend/src/dto/users.py
@@ -0,0 +1,25 @@
+from enum import IntFlag
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+class UserPermission(IntFlag):
+    """The permissions a user has."""
+
+    VIEW_VOUCHERS = 2**0
+    ISSUE_VOUCHERS = 2**1
+    REVOKE_VOUCHERS = 2**1
+    VIEW_PRODUCTS = 2**2
+    MANAGE_USERS = 2**3
+
+
+class User(BaseModel):
+    """An user authenticated with the backend."""
+
+    id: UUID
+    permissions: int
+
+    def has_permission(self, permission: UserPermission) -> bool:
+        """Whether the user has the given permission."""
+        return (self.permissions & permission) == permission