# backend/utils.py
"""
Shared utility functions for the Warracker application
"""

def allowed_file(filename):
    """Check if the file extension is allowed"""
    ALLOWED_EXTENSIONS = {'pdf', 'png', 'jpg', 'jpeg', 'zip', 'rar', 'webp', 'gif'}
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS