src/utils/file_utils.py

import os
import time
from pathlib import Path
from typing import Dict, Optional

def get_latest_files(directory: str, file_types: list = ['.webm', '.zip']) -> Dict[str, Optional[str]]:
    """Get the latest recording and trace files"""
    latest_files = {ext: None for ext in file_types}
    
    if not os.path.exists(directory):
        os.makedirs(directory, exist_ok=True)
        return latest_files

    for file_type in file_types:
        try:
            matches = list(Path(directory).rglob(f"*{file_type}"))
            if matches:
                latest = max(matches, key=lambda p: p.stat().st_mtime)
                # Only return files that are complete (not being written)
                if time.time() - latest.stat().st_mtime > 1.0:
                    latest_files[file_type] = str(latest)
        except Exception as e:
            print(f"Error getting latest {file_type} file: {e}")
            
    return latest_files