use time::OffsetDateTime;

#[cfg(target_arch = "wasm32")]
pub fn now_utc() -> OffsetDateTime {
    return OffsetDateTime::from_unix_timestamp_nanos((js_sys::Date::now() * 1_000_000f64) as i128)
        .expect("current time outside supported range");
}

#[cfg(not(target_arch = "wasm32"))]
#[inline(always)]
pub fn now_utc() -> OffsetDateTime {
    return OffsetDateTime::now_utc();
}

#[cfg(feature = "local-offset")]
#[cfg(target_arch = "wasm32")]
pub fn current_local_offset() -> Result<time::UtcOffset, time::error::IndeterminateOffset> {
    // get_timezone_offset is in minutes
    time::UtcOffset::from_whole_seconds((js_sys::Date::new_0().get_timezone_offset() * 60f64) as i32)
        .map_err(|_| time::error::IndeterminateOffset)
}

#[cfg(feature = "local-offset")]
#[cfg(not(target_arch = "wasm32"))]
#[inline(always)]
pub fn current_local_offset() -> Result<time::UtcOffset, time::error::IndeterminateOffset> {
    time::UtcOffset::current_local_offset()
}