"use strict";
/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSysroot = void 0;
const child_process_1 = require("child_process");
const crypto_1 = require("crypto");
const os_1 = require("os");
const fs = require("fs");
const https = require("https");
const path = require("path");
const sysroots_1 = require("./sysroots");
// Based on https://source.chromium.org/chromium/chromium/src/+/main:build/linux/sysroot_scripts/install-sysroot.py.
const URL_PREFIX = 'https://msftelectron.blob.core.windows.net';
const URL_PATH = 'sysroots/toolchain';
function getSha(filename) {
    const hash = (0, crypto_1.createHash)('sha1');
    // Read file 1 MB at a time
    const fd = fs.openSync(filename, 'r');
    const buffer = Buffer.alloc(1024 * 1024);
    let position = 0;
    let bytesRead = 0;
    while ((bytesRead = fs.readSync(fd, buffer, 0, buffer.length, position)) === buffer.length) {
        hash.update(buffer);
        position += bytesRead;
    }
    hash.update(buffer.slice(0, bytesRead));
    return hash.digest('hex');
}
async function getSysroot(arch) {
    const sysrootDict = sysroots_1.sysrootInfo[arch];
    const tarballFilename = sysrootDict['Tarball'];
    const tarballSha = sysrootDict['Sha1Sum'];
    const sysroot = path.join((0, os_1.tmpdir)(), sysrootDict['SysrootDir']);
    const url = [URL_PREFIX, URL_PATH, tarballSha, tarballFilename].join('/');
    const stamp = path.join(sysroot, '.stamp');
    if (fs.existsSync(stamp) && fs.readFileSync(stamp).toString() === url) {
        return sysroot;
    }
    console.log(`Installing Debian ${arch} root image: ${sysroot}`);
    fs.rmSync(sysroot, { recursive: true, force: true });
    fs.mkdirSync(sysroot);
    const tarball = path.join(sysroot, tarballFilename);
    console.log(`Downloading ${url}`);
    let downloadSuccess = false;
    for (let i = 0; i < 3 && !downloadSuccess; i++) {
        await new Promise((c) => {
            https.get(url, (res) => {
                const chunks = [];
                res.on('data', (chunk) => {
                    chunks.push(chunk);
                });
                res.on('end', () => {
                    fs.writeFileSync(tarball, Buffer.concat(chunks));
                    downloadSuccess = true;
                    c();
                });
            }).on('error', (err) => {
                console.error('Encountered an error during the download attempt: ' + err.message);
                c();
            });
        });
    }
    if (!downloadSuccess) {
        throw new Error('Failed to download ' + url);
    }
    const sha = getSha(tarball);
    if (sha !== tarballSha) {
        throw new Error(`Tarball sha1sum is wrong. Expected ${tarballSha}, actual ${sha}`);
    }
    const proc = (0, child_process_1.spawnSync)('tar', ['xf', tarball, '-C', sysroot]);
    if (proc.status) {
        throw new Error('Tarball extraction failed with code ' + proc.status);
    }
    fs.rmSync(tarball);
    fs.writeFileSync(stamp, url);
    return sysroot;
}
exports.getSysroot = getSysroot;