use std::time::{Duration, Instant};

use crate::constants::CLOCK_PERIOD;

use crate::resources::{Clock, Resources};

pub fn run(resources: &mut Resources) {
    if !resources.stop_clock {
        try_tick(&mut resources.clock);
    } else {
        reset(&mut resources.clock);
    }
}

fn try_tick(clock: &mut Clock) {
    if Instant::now() - clock.last_ticked > Duration::from_secs_f32(CLOCK_PERIOD) {
        tick(clock);
    } else {
        clock.has_ticked = false;
    }
}

pub fn force_tick(clock: &mut Clock) {
    tick(clock);
}

fn tick(clock: &mut Clock) {
    clock.has_ticked = true;
    clock.last_ticked = Instant::now();
    clock.ticks += 1;
}

fn reset(clock: &mut Clock) {
    clock.last_ticked = Instant::now();
    clock.has_ticked = false;
}