imphnen-backend-service/imphnen-utils/src/generate_date.rs

use tracing::{info};
use chrono::{DateTime, Utc};

/// Returns the current UTC date/time as an RFC3339 string.
pub fn get_iso_date() -> String {
    info!("get_iso_date called");
    let now: DateTime<Utc> = Utc::now();
    let date_str = now.to_rfc3339();
    info!(date_str = %date_str, "get_iso_date returning RFC3339 date string");
    date_str
}

#[cfg(test)]
mod tests {
    use super::*;
    use chrono::DateTime;

    #[test]
    fn test_get_iso_date() {
        let date_str = get_iso_date();
        // Should be valid RFC3339
        let parsed = DateTime::parse_from_rfc3339(&date_str);
        assert!(parsed.is_ok());
        // Should be recent (within last second)
        let now = Utc::now();
        let parsed = parsed.unwrap().with_timezone(&Utc);
        let diff = (now - parsed).num_milliseconds().abs();
        assert!(diff < 1000); // Within 1 second
    }
}