search_bsky: ignore dates if unable to parse

datasources/bsky/search_bsky.py

@@ -604,20 +604,30 @@ def map_item(item):
             "author_display_name": item["author"]["display_name"],
             "author_profile": author_profile,
             "author_avatar": item["author"]["avatar"],
-            "author_created_at": SearchBluesky.bsky_convert_datetime_string(item["author"]["created_at"]).isoformat(),
+            "author_created_at": SearchBluesky.bsky_convert_datetime_string(item["author"]["created_at"], mode="iso_string"),
 
             "timestamp": created_at.timestamp(),
         }, message=f"Bluesky new mappings: {unmapped_data}")
 
     @staticmethod
-    def bsky_convert_datetime_string(datetime_string):
+    def bsky_convert_datetime_string(datetime_string, mode="datetime"):
         """
-        Bluesky datetime string to datetime object
+        Bluesky datetime string to datetime object. If unable to parse, return the string.
 
         :param str datetime_string:  The datetime string to convert
+        :param str mode:  The mode to return the datetime object in [datetime, iso_string]
         :return datetime:  The converted datetime object
         """
-        return parser.isoparse(datetime_string)
+        try:
+            datetime_object = parser.isoparse(datetime_string)
+        except ValueError:
+            return datetime_string
+
+        if mode == "datetime":
+            return datetime_object
+        elif mode == "iso_string":
+            return datetime_object.isoformat()
+
 
     @staticmethod
     def get_bsky_link(handle, post_id):