const path = require('path');

const { pathExists } = require('fs-extra');

const spawn = require('cross-spawn-promise');

async function isNPMInstalled(args) {

return pathExists(path.join(args.workDir, 'node_modules'));

}

async function install(args) {

if (await isNPMInstalled(args)) return;

const { workDir, npmClient = 'tnpm' } = args;

try {

await spawn(npmClient, ['i'], { stdio: 'inherit', cwd: workDir });

} catch (e) {

// TODO

}

}

async function isNPMModuleInstalled(args, name) {

const modulePkgJsonPath = path.resolve(args.workDir || '', 'node_modules', name, 'package.json');

return pathExists(modulePkgJsonPath);

}

async function installModule(args, name) {

if (await isNPMModuleInstalled(args, name)) return;

const { workDir, npmClient = 'tnpm' } = args;

try {

await spawn(npmClient, ['i', name], { stdio: 'inherit', cwd: workDir });

} catch (e) {

// TODO

}

}

module.exports = {

installModule,

install,

};