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use core::time::Duration;

mod bitset;
mod entry;
pub mod scheduler;
mod stack;
mod wheel;

pub fn delay(duration: Duration) -> scheduler::Timer {
    scheduler::scope::borrow_with(|handle| {
        let nanos = duration.as_nanos();
        let nanos_per_tick = resolution::tick_duration().as_nanos();
        let ticks = nanos / nanos_per_tick;

        handle.delay(ticks as u64)
    })
}

pub fn now() -> Duration {
    scheduler::scope::borrow_with(|handle| {
        let nanos_per_tick = resolution::tick_duration().as_nanos() as u64;

        let ticks = handle.ticks();
        let nanos = nanos_per_tick * ticks;
        Duration::from_nanos(nanos)
    })
}

pub use resolution::{tick_duration, with_tick_duration};

mod resolution {
    use core::time::Duration;
    crate::scope::define!(scope, Duration);

    pub fn tick_duration() -> Duration {
        scope::try_borrow_with(|v| v.unwrap_or_else(|| Duration::from_micros(1)))
    }

    pub use scope::with as with_tick_duration;
}