"use strict";
module.exports = function(Promise, INTERNAL) {
var util = require("./util");
var TimeoutError = Promise.TimeoutError;

var afterTimeout = function (promise, message, parent) {
    if (!promise.isPending()) return;
    var err;
    if (typeof message !== "string") {
        if (message instanceof Error) {
            err = message;
        } else {
            err = new TimeoutError("operation timed out");
        }
    } else {
        err = new TimeoutError(message);
    }
    util.markAsOriginatingFromRejection(err);
    promise._attachExtraTrace(err);
    promise._reject(err);
    parent.cancel();
};

var afterValue = function(value) { return delay(+this).thenReturn(value); };
var delay = Promise.delay = function (ms, value) {
    var ret;
    if (value !== undefined) {
        ret = Promise.resolve(value)
                ._then(afterValue, null, null, ms, undefined);
    } else {
        ret = new Promise(INTERNAL);
        setTimeout(function() { ret._fulfill(); }, +ms);
    }
    ret._setAsyncGuaranteed();
    return ret;
};

Promise.prototype.delay = function (ms) {
    return delay(ms, this);
};

function successClear(value) {
    var handle = this;
    if (handle instanceof Number) handle = +handle;
    clearTimeout(handle);
    return value;
}

function failureClear(reason) {
    var handle = this;
    if (handle instanceof Number) handle = +handle;
    clearTimeout(handle);
    throw reason;
}

Promise.prototype.timeout = function (ms, message) {
    ms = +ms;
    var parent = this.then();
    var ret = parent.then();
    var handle = setTimeout(function timeoutTimeout() {
        afterTimeout(ret, message, parent);
    }, ms);
    return ret._then(successClear, failureClear, undefined, handle, undefined);
};

};
