pub fn prettify_bytes(bytes: u64) -> String {
    if bytes > 1024 * 1024 * 1024 {
        format!("{:.2} GB", bytes as f64 / 1024.0 / 1024.0 / 1024.0)
    }

    else if bytes > 1024 * 1024 {
        format!("{:.2} MB", bytes as f64 / 1024.0 / 1024.0)
    }

    else if bytes > 1024 {
        format!("{:.2} KB", bytes as f64 / 1024.0)
    }

    else {
        format!("{:.2} B", bytes)
    }
}