document.addEventListener('DOMContentLoaded', () => {
    if (!document.getElementById('upload-form')) return;

    const neverExpireCheckbox = document.getElementById('field-never_expire');
    const expireAfterDaysField = document.getElementById('field-expire_after_days');

    const autogenUrlCheckbox = document.getElementById('field-autogen_url');
    const slugField = document.getElementById('field-slug');

    neverExpireCheckbox.addEventListener('change', () => {
        expireAfterDaysField.disabled = neverExpireCheckbox.checked;
    });

    autogenUrlCheckbox.addEventListener('change', () => {
        slugField.disabled = autogenUrlCheckbox.checked;
    });
});