pub fn size_display<'a>(total_bytes: usize) -> (f64, &'a str) {
    let total_bytes = total_bytes as f64;
    if total_bytes >= 1024.0 * 1024.0 * 1024.0 * 1024.0 {
        (total_bytes / (1024.0 * 1024.0 * 1024.0 * 1024.0), "TB")
    } else if total_bytes >= 1024.0 * 1024.0 * 1024.0 {
        (total_bytes / (1024.0 * 1024.0 * 1024.0), "GB")
    } else if total_bytes >= 1024.0 * 1024.0 {
        (total_bytes / (1024.0 * 1024.0), "MB")
    } else if total_bytes >= 1024.0 {
        (total_bytes / 1024.0, "KB")
    } else {
        (total_bytes, "B")
    }
}