use rand::distr::{Alphanumeric, SampleString};
use std::time::{SystemTime, UNIX_EPOCH};

/// Generate a random string of a given size
pub fn rand_str(len: usize) -> String {
    Alphanumeric.sample_string(&mut rand::rng(), len)
}

/// Get current time
pub fn curr_time() -> anyhow::Result<u64> {
    Ok(SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .map(|t| t.as_secs())?)
}

/// Format time
pub fn format_time(time: u64) -> Option<String> {
    let time = chrono::DateTime::from_timestamp(time as i64, 0)?;
    Some(time.naive_local().to_string())
}