/**
 * Copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// Hopefully, this file is never used in injected sources,
// because it does not use `builtins.setTimeout` and similar,
// and can break when clock emulation is engaged.
/* eslint-disable no-restricted-globals */
import { monotonicTime } from './time';
export async function raceAgainstDeadline(cb, deadline) {
    let timer;
    // Note: not including "await" here truncates the async stack inside cb(), so always include it.
    return await Promise.race([
        cb().then(result => {
            return { result, timedOut: false };
        }),
        new Promise(resolve => {
            if (!deadline)
                return;
            timer = setTimeout(() => resolve({ timedOut: true }), deadline - monotonicTime());
        }),
    ]).finally(() => {
        clearTimeout(timer);
    });
}
export async function pollAgainstDeadline(callback, deadline, pollIntervals = [100, 250, 500, 1000]) {
    const lastPollInterval = pollIntervals.pop() ?? 1000;
    let lastResult;
    const wrappedCallback = () => Promise.resolve().then(callback);
    while (true) {
        const time = monotonicTime();
        if (deadline && time >= deadline)
            break;
        const received = await raceAgainstDeadline(wrappedCallback, deadline);
        if (received.timedOut)
            break;
        lastResult = received.result.result;
        if (!received.result.continuePolling)
            return { result: lastResult, timedOut: false };
        const interval = pollIntervals.shift() ?? lastPollInterval;
        if (deadline && deadline <= monotonicTime() + interval)
            break;
        await new Promise(x => setTimeout(x, interval));
    }
    return { timedOut: true, result: lastResult };
}
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