import got from 'got';
import gunzipMaybe from 'gunzip-maybe';
import stream from 'stream';
import * as tsm from 'ts-morph';
import { promisify } from 'util';
import { log } from '../utils/log';
import { extractPackageTarball } from './extract-package-tarball';

const pipeline = promisify(stream.pipeline);

export async function tryDownloadPackage({
    tarball,
}: {
    tarball: string;
}): Promise<tsm.FileSystemHost | undefined> {
    try {
        const fileSystem = new tsm.InMemoryFileSystemHost();

        await pipeline(
            got.stream(tarball),
            gunzipMaybe(),
            extractPackageTarball({ fileSystem })
        );

        return fileSystem;
    } catch (err) {
        log('tryDownloadPackage: download failed: %O', { tarball, err });
        return undefined;
    }
}