// tslint:disable:no-global-tslint-disable file-header

import { logging, terminal } from '@angular-devkit/core';

import { ModuleNotFoundException, resolve } from '@angular-devkit/core/node';

import { spawn } from 'child_process';

export type NpmInstall = (packageName: string,

logger: logging.Logger,

packageManager: string,

projectRoot: string,

save?: boolean) => void;

export default async function (packageName: string,

logger: logging.Logger,

packageManager: string,

projectRoot: string,

save = true) {

const installArgs: string[] = [];

switch (packageManager) {

case 'cnpm':

case 'npm':

installArgs.push('install', '--quiet');

break;

case 'yarn':

installArgs.push('add');

break;

default:

packageManager = 'npm';

installArgs.push('install', '--quiet');

break;

}

logger.info(terminal.green(`Installing packages for tooling via ${packageManager}.`));

if (packageName) {

try {

// Verify if we need to install the package (it might already be there).

// If it's available and we shouldn't save, simply return. Nothing to be done.

resolve(packageName, { checkLocal: true, basedir: projectRoot });

return;

} catch (e) {

if (!(e instanceof ModuleNotFoundException)) {

throw e;

}

}

installArgs.push(packageName);

}

if (!save) {

installArgs.push('--no-save');

}

const installOptions = {

stdio: 'inherit',

shell: true,

};

await new Promise((resolve, reject) => {

spawn(packageManager, installArgs, installOptions)

.on('close', (code: number) => {

if (code === 0) {

logger.info(terminal.green(`Installed packages for tooling via ${packageManager}.`));

resolve();

} else {

const message = 'Package install failed, see above.';

logger.info(terminal.red(message));

reject(message);

}

});

});

}