From 8b7c598407a5fea9a3d78473e72df87606998cd4 Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Fri, 4 Aug 2023 10:10:28 +0300
Subject: Copy over files from GN3 repository.

---
 gn_auth/auth/authorisation/users/models.py | 66 ++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 gn_auth/auth/authorisation/users/models.py

(limited to 'gn_auth/auth/authorisation/users/models.py')

diff --git a/gn_auth/auth/authorisation/users/models.py b/gn_auth/auth/authorisation/users/models.py
new file mode 100644
index 0000000..89c1d22
--- /dev/null
+++ b/gn_auth/auth/authorisation/users/models.py
@@ -0,0 +1,66 @@
+"""Functions for acting on users."""
+import uuid
+from functools import reduce
+
+from gn3.auth import db
+from gn3.auth.authorisation.roles.models import Role
+from gn3.auth.authorisation.checks import authorised_p
+from gn3.auth.authorisation.privileges import Privilege
+
+from gn3.auth.authentication.users import User
+
+@authorised_p(
+    ("system:user:list",),
+    "You do not have the appropriate privileges to list users.",
+    oauth2_scope="profile user")
+def list_users(conn: db.DbConnection) -> tuple[User, ...]:
+    """List out all users."""
+    with db.cursor(conn) as cursor:
+        cursor.execute("SELECT * FROM users")
+        return tuple(
+            User(uuid.UUID(row["user_id"]), row["email"], row["name"])
+            for row in cursor.fetchall())
+
+def __build_resource_roles__(rows):
+    def __build_roles__(roles, row):
+        role_id = uuid.UUID(row["role_id"])
+        priv = Privilege(row["privilege_id"], row["privilege_description"])
+        role = roles.get(role_id, Role(
+            role_id, row["role_name"], bool(row["user_editable"]), tuple()))
+        return {
+            **roles,
+            role_id: Role(role_id, role.role_name, role.user_editable, role.privileges + (priv,))
+        }
+    def __build__(acc, row):
+        resource_id = uuid.UUID(row["resource_id"])
+        return {
+            **acc,
+            resource_id: __build_roles__(acc.get(resource_id, {}), row)
+        }
+    return {
+        resource_id: tuple(roles.values())
+        for resource_id, roles in reduce(__build__, rows, {}).items()
+    }
+
+# @authorised_p(
+#     ("",),
+#     ("You do not have the appropriate privileges to view a user's roles on "
+#      "resources."))
+def user_resource_roles(conn: db.DbConnection, user: User) -> dict[uuid.UUID, tuple[Role, ...]]:
+    """Fetch all the user's roles on resources."""
+    with db.cursor(conn) as cursor:
+        cursor.execute(
+            "SELECT res.*, rls.*, p.*"
+            "FROM resources AS res INNER JOIN "
+            "group_user_roles_on_resources AS guror "
+            "ON res.resource_id=guror.resource_id "
+            "LEFT JOIN roles AS rls "
+            "ON guror.role_id=rls.role_id "
+            "LEFT JOIN role_privileges AS rp "
+            "ON rls.role_id=rp.role_id "
+            "LEFT JOIN privileges AS p "
+            "ON rp.privilege_id=p.privilege_id "
+            "WHERE guror.user_id = ?",
+            (str(user.user_id),))
+        return __build_resource_roles__(
+            (dict(row) for row in cursor.fetchall()))
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