import now from '../time/now';
import timeout from './timeout';
import append from '../array/append';

/**
 * Ensure a minimum delay for callbacks
 */
function awaitDelay(callback, delay) {
    const baseTime = now() + delay;
    return function() {
        // ensure all browsers will execute it asynchronously (avoid hard
        // to catch errors) not using "0" because of old browsers and also
        // since new browsers increase the value to be at least "4"
        // http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout
        const ms = Math.max(baseTime - now(), 4);
        return timeout.apply(this, append([callback, ms, this], arguments));
    };
}

export default awaitDelay;