From c740ef2b996f651015e8125fb65b81ef20fd7d8a Mon Sep 17 00:00:00 2001
From: Teresa Gomez <46339554+teresamg@users.noreply.github.com>
Date: Thu, 2 May 2024 12:53:31 -0700
Subject: [PATCH] Generates default dataset_description.json if not present

---
 AFQ/api/group.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/AFQ/api/group.py b/AFQ/api/group.py
index 292b67bd8..7e676a438 100644
--- a/AFQ/api/group.py
+++ b/AFQ/api/group.py
@@ -128,8 +128,14 @@ def __init__(self,
         if not op.exists(bids_path):
             raise ValueError("bids_path not found")
         if not op.exists(op.join(bids_path, "dataset_description.json")):
-            raise ValueError("There must be a dataset_description.json"
-                             + " in bids_path")
+            dataset_description = {
+                "Name": "unknown",
+                "BIDSVersion": "unknown",
+                "Authors": ["unknown"]
+            }
+            dd_file = op.join(bids_path, 'dataset_description.json')
+            with open(dd_file, 'w') as outfile:
+                json.dump(dataset_description, outfile)
         if not isinstance(bids_filters, dict):
             raise TypeError("bids_filters must be a dict")
         # preproc_pipeline typechecking handled by pyBIDS