/**
 * Copyright 2020 Google Inc. All rights reserved.
 *
 * 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.
 */
import https from 'https';
import os from 'os';
import ProgressBar from 'progress';

import puppeteer from '../node.js';
import { PUPPETEER_REVISIONS } from '../revisions.js';

const supportedProducts = {
    chrome: 'Chromium',
    firefox: 'Firefox Nightly',
};
export async function downloadBrowser() {
    const downloadHost = process.env.PUPPETEER_DOWNLOAD_HOST ||
        process.env.npm_config_puppeteer_download_host ||
        process.env.npm_package_config_puppeteer_download_host;
    const product = process.env.PUPPETEER_PRODUCT ||
        process.env.npm_config_puppeteer_product ||
        process.env.npm_package_config_puppeteer_product ||
        'chrome';
    const downloadPath = process.env.PUPPETEER_DOWNLOAD_PATH ||
        process.env.npm_config_puppeteer_download_path ||
        process.env.npm_package_config_puppeteer_download_path;
    const browserFetcher = puppeteer.createBrowserFetcher({
        product,
        host: downloadHost,
        path: downloadPath,
    });
    const revision = await getRevision();
    await fetchBinary(revision);
    function getRevision() {
        if (product === 'chrome') {
            return (process.env.PUPPETEER_CHROMIUM_REVISION ||
                process.env.npm_config_puppeteer_chromium_revision ||
                PUPPETEER_REVISIONS.chromium);
        }
        else if (product === 'firefox') {
            puppeteer._preferredRevision =
                PUPPETEER_REVISIONS.firefox;
            return getFirefoxNightlyVersion().catch((error) => {
                console.error(error);
                process.exit(1);
            });
        }
        else {
            throw new Error(`Unsupported product ${product}`);
        }
    }
    function fetchBinary(revision) {
        const revisionInfo = browserFetcher.revisionInfo(revision);
        // Do nothing if the revision is already downloaded.
        if (revisionInfo.local) {
            logPolitely(`${supportedProducts[product]} is already in ${revisionInfo.folderPath}; skipping download.`);
            return;
        }
        // Override current environment proxy settings with npm configuration, if any.
        const NPM_HTTPS_PROXY = process.env.npm_config_https_proxy || process.env.npm_config_proxy;
        const NPM_HTTP_PROXY = process.env.npm_config_http_proxy || process.env.npm_config_proxy;
        const NPM_NO_PROXY = process.env.npm_config_no_proxy;
        if (NPM_HTTPS_PROXY)
            process.env.HTTPS_PROXY = NPM_HTTPS_PROXY;
        if (NPM_HTTP_PROXY)
            process.env.HTTP_PROXY = NPM_HTTP_PROXY;
        if (NPM_NO_PROXY)
            process.env.NO_PROXY = NPM_NO_PROXY;
        function onSuccess(localRevisions) {
            if (os.arch() !== 'arm64') {
                logPolitely(`${supportedProducts[product]} (${revisionInfo.revision}) downloaded to ${revisionInfo.folderPath}`);
            }
            localRevisions = localRevisions.filter((revision) => revision !== revisionInfo.revision);
            const cleanupOldVersions = localRevisions.map((revision) => browserFetcher.remove(revision));
            Promise.all([...cleanupOldVersions]);
        }
        function onError(error) {
            console.error(`ERROR: Failed to set up ${supportedProducts[product]} r${revision}! Set "PUPPETEER_SKIP_DOWNLOAD" env variable to skip download.`);
            console.error(error);
            process.exit(1);
        }
        let progressBar = null;
        let lastDownloadedBytes = 0;
        function onProgress(downloadedBytes, totalBytes) {
            if (!progressBar) {
                progressBar = new ProgressBar(`Downloading ${supportedProducts[product]} r${revision} - ${toMegabytes(totalBytes)} [:bar] :percent :etas `, {
                    complete: '=',
                    incomplete: ' ',
                    width: 20,
                    total: totalBytes,
                });
            }
            const delta = downloadedBytes - lastDownloadedBytes;
            lastDownloadedBytes = downloadedBytes;
            progressBar.tick(delta);
        }
        return browserFetcher
            .download(revisionInfo.revision, onProgress)
            .then(() => browserFetcher.localRevisions())
            .then(onSuccess)
            .catch(onError);
    }
    function toMegabytes(bytes) {
        const mb = bytes / 1024 / 1024;
        return `${Math.round(mb * 10) / 10} Mb`;
    }
    function getFirefoxNightlyVersion() {
        const firefoxVersions = 'https://product-details.mozilla.org/1.0/firefox_versions.json';
        const promise = new Promise((resolve, reject) => {
            let data = '';
            logPolitely(`Requesting latest Firefox Nightly version from ${firefoxVersions}`);
            https
                .get(firefoxVersions, (r) => {
                if (r.statusCode >= 400)
                    return reject(new Error(`Got status code ${r.statusCode}`));
                r.on('data', (chunk) => {
                    data += chunk;
                });
                r.on('end', () => {
                    try {
                        const versions = JSON.parse(data);
                        return resolve(versions.FIREFOX_NIGHTLY);
                    }
                    catch {
                        return reject(new Error('Firefox version not found'));
                    }
                });
            })
                .on('error', reject);
        });
        return promise;
    }
}
export function logPolitely(toBeLogged) {
    const logLevel = process.env.npm_config_loglevel;
    const logLevelDisplay = ['silent', 'error', 'warn'].indexOf(logLevel) > -1;
    // eslint-disable-next-line no-console
    if (!logLevelDisplay)
        console.log(toBeLogged);
}
