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agenda/utils.py

@@ -56,3 +56,12 @@ def human_readable_delta(future_date: date) -> str | None:
         parts.append(f"{days} day{'s' if days > 1 else ''}")
 
     return " ".join(parts) if parts else None
+
+
+def filename_timestamp(filename: str, ext: str) -> tuple[datetime, str] | None:
+    """Get datetime from filename."""
+    try:
+        ts = datetime.strptime(filename, f"%Y-%m-%d_%H:%M:%S.{ext}")
+    except ValueError:
+        return None
+    return (ts, filename)