added update_pics.py

.gitignore

@@ -1,3 +1,5 @@
 backend/randpic/__pycache__
 backend/tianyi/__pycache__
-backend/db.sqlite3
+backend/db.sqlite3
+backend/secret.txt
+backend/jsons/pics.json

backend/update_pics.py

@@ -0,0 +1,19 @@
+# Description: This script is used to update the list of pictures in the Azure Blob Storage container.
+from azure.storage.blob import BlobServiceClient
+import argparse
+import json
+parser = argparse.ArgumentParser()
+parser.add_argument('--container', type=str, default="tianyi-random")
+parser.add_argument('--remotedir', type=str, default="")
+args=parser.parse_args()
+try:
+    with open('secret.txt', 'r') as f:
+        connect_str = f.read()
+    blob_service_client = BlobServiceClient.from_connection_string(connect_str)
+    container_client = blob_service_client.get_container_client(args.container)
+    existing_files=[blob.name.split("/")[-1] for blob in container_client.list_blobs(name_starts_with=args.remotedir)]
+    with open('jsons/pics.json', 'w') as f:
+        json.dump(existing_files, f, indent=4, sort_keys=True)
+except Exception as e:
+    print(e)
+    exit(1)