1 files changed, 104 insertions, 0 deletions
diff --git a/scripts/authentication/resource.py b/scripts/authentication/resource.py
new file mode 100644
index 00000000..4996f34c
--- /dev/null
+++ b/scripts/authentication/resource.py
@@ -0,0 +1,104 @@
+"""A script that:
+
+- Optionally restores data from a json file.
+
+- By default, without any args provided, adds the group: 'editors' to
+every resource. 'editors' should have the right to edit both metadata
+and data.
+
+- Optionally creates a back-up every time you edit a resource.
+
+
+To restore a back-up:
+
+.. code-block:: python
+   python resource.py --restore <PATH/TO/RESOURCE/BACK-UP/FILE>
+
+To add editors to every resource without creating a back-up:
+
+.. code-block:: python
+   python resource.py
+
+To add editors to every resource while creating a back-up before any
+destructive edits:
+
+.. code-block:: python
+   python resource.py --enable-backup
+
+"""
+import argparse
+import json
+import redis
+import os
+
+from datetime import datetime
+
+
+def recover_hash(name: str, file_path: str, set_function) -> bool:
+    """Recover back-ups using the `set_function`
+
+    Parameters:
+
+    - `name`: Redis hash where `file_path` will be restored
+
+    - `file_path`: File path where redis hash is sourced from
+
+    - `set_function`: Function used to do the Redis backup for
+      example: HSET
+
+    """
+    try:
+        with open(file_path, "r") as f:
+            resources = json.load(f)
+            for resource_id, resource in resources.items():
+                set_function(name=name,
+                             key=resource_id,
+                             value=resource)
+            return True
+    except Exception as e:
+        print(e)
+        return False
+
+
+if __name__ == "__main__":
+    # Initialising the parser CLI arguments
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--group-id",
+                        help="Add the group id to all resources")
+    parser.add_argument("--restore",
+                        help="Restore from a given backup")
+    parser.add_argument("--enable-backup", action="store_true",
+                        help="Create a back up before edits")
+    args = parser.parse_args()
+
+    if not args.group_id:
+        exit("Please specify the group-id!\n")
+    if args.restore:
+        if recover_hash(name="resources",
+                        file_path=args.back_up,
+                        set_function=redis.Redis(decode_responses=True).hset):
+            exit(f"\n Done restoring {args.back_up}!\n")
+        else:
+            exit(f"\n There was an error restoring {args.back_up}!\n")
+
+    REDIS_CONN = redis.Redis(decode_responses=True)
+    RESOURCES = REDIS_CONN.hgetall("resources")
+    BACKUP_DIR = os.path.join(os.getenv("HOME"), "redis")
+    if args.enable_backup:
+        FILENAME = ("resources-"
+                    f"{datetime.now().strftime('%Y-%m-%d-%I:%M:%S-%p')}"
+                    ".json")
+        if not os.path.exists(BACKUP_DIR):
+            os.mkdir(BACKUP_DIR)
+        with open(os.path.join(BACKUP_DIR, FILENAME), "w") as f:
+            json.dump(RESOURCES, f, indent=4)
+        print(f"\nDone backing upto {FILENAME}")
+
+    for resource_id, resource in RESOURCES.items():
+        _resource = json.loads(resource)  # str -> dict conversion
+        _resource["group_masks"] = {args.group_id: {"metadata": "edit",
+                                                    "data": "edit"}}
+        REDIS_CONN.hset("resources",
+                        resource_id,
+                        json.dumps(_resource))
+    exit("Done updating `resources`\n")