import {info} from '@travi/cli-messages';

import {execa} from 'execa';

export async function determineLatestVersionOf(nodeVersionCategory) {

info('Determining version of node', {level: 'secondary'});

const {stdout: nvmLsOutput} = await execa(

`. ~/.nvm/nvm.sh && nvm ls-remote${('LTS' === nodeVersionCategory) ? ' --lts' : ''}`,

{shell: true}

);

const lsLines = nvmLsOutput.split('\n');

const lsLine = lsLines[lsLines.length - 2];

return lsLine.match(/(v[0-9]+)\.[0-9]+\.[0-9]+/)[1];

}

export function install(nodeVersionCategory) {

info(`Installing ${nodeVersionCategory} version of node using nvm`, {level: 'secondary'});

const subprocess = execa('. ~/.nvm/nvm.sh && nvm install', {shell: true});

subprocess.stdout.pipe(process.stdout);

return subprocess;

}