SolarEnergy/central_backend/src/utils/time_utils.rs

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

/// Get the current time since epoch
pub fn time_secs() -> u64 {
    SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_secs()
}

/// Get the current time since epoch
pub fn time_millis() -> u128 {
    SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_millis()
}

/// Get the number of the day since 01-01-1970 of a given UNIX timestamp
pub fn day_number(time: u64) -> u64 {
    time / (3600 * 24)
}

#[cfg(test)]
mod test {
    use crate::utils::time_utils::day_number;

    #[test]
    fn test_time_of_day() {
        assert_eq!(day_number(500), 0);
        assert_eq!(day_number(1726592301), 19983);
        assert_eq!(day_number(1726592401), 19983);
        assert_eq!(day_number(1726498701), 19982);
    }
}