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use std::time::{SystemTime, UNIX_EPOCH};

// `@ud` ~1970.1.1
static DA_UNIX_EPOCH: u128 = 170141184475152167957503069145530368000;
// `@ud` ~s1
static DA_SECOND: u128 = 18446744073709551616;

// Convert from Unix time in milliseconds to Urbit `@da` time
pub fn unix_time_to_da(unix_time: u64) -> u128 {
    let time_since_epoch = (unix_time as u128 * DA_SECOND) / 1000;
    DA_UNIX_EPOCH + time_since_epoch
}

// Acquire the current time in Urbit `@da` encoding
pub fn get_current_da_time() -> u128 {
    let unix_time = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_millis() as u64;
    unix_time_to_da(unix_time)
}