/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Dolittle. All rights reserved.
 *  Licensed under the MIT License. See LICENSE in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
import spawn from 'cross-spawn';
import os from 'os';
import path from 'path';
import { fileSystem } from '@dolittle/tooling.common.files';
import {
    LatestCompatibleNpmPackageFinder, IPackages, Packages, AllNpmPackageVersionsFinder,
    NpmPackagesByUserFinder, NpmPackagesWithKeywordsFinder, LatestNpmPackageVersionFinder,
    ICanFindLatestVersionOfPackage, ILocalPackageDiscoverers, LocalPackageDiscoverers,
    LocalNpmPackageDiscoverer, NpmPackageDownloader,ICanDownloadPackages,
    IConnectionChecker, ConnectionChecker, ILatestCompatiblePackageFinder
} from './internal';


const npmRootSpawn = spawn.sync('npm', ['root', '-g']);
if (npmRootSpawn.error) throw npmRootSpawn.error;
export const nodeModulesPath = npmRootSpawn.stdout.toString().replace(/\n$/, '');
export const userHomePath = os.homedir();

export const toolingPackage = fileSystem.existsSync(path.join(__dirname, 'package.json')) ?
                                fileSystem.readJsonSync(path.join(__dirname, 'package.json'))
                                : fileSystem.readJsonSync(path.join(__dirname, '..', 'package.json'));

export let latestNpmPackageVersionFinder: ICanFindLatestVersionOfPackage = new LatestNpmPackageVersionFinder();

const allNpmPackageVersionsFinder = new AllNpmPackageVersionsFinder();
export let latestCompatiblePackageFinder: ILatestCompatiblePackageFinder = new LatestCompatibleNpmPackageFinder(allNpmPackageVersionsFinder, toolingPackage);
const npmPackagesByUserFinder = new NpmPackagesByUserFinder();
const npmPackagesWithKeywordsFinder = new NpmPackagesWithKeywordsFinder();

export let packages: IPackages = new Packages(latestCompatiblePackageFinder, [npmPackagesByUserFinder], [npmPackagesWithKeywordsFinder]);

const localNpmPackageDiscoverer = new LocalNpmPackageDiscoverer(fileSystem, nodeModulesPath);
export let localPackageDiscoverers: ILocalPackageDiscoverers = new LocalPackageDiscoverers([localNpmPackageDiscoverer]);

export let npmPackageDownloader: ICanDownloadPackages = new NpmPackageDownloader();

export let connectionChecker: IConnectionChecker = new ConnectionChecker();