'use strict';

// Copyright 2016, Google, Inc.

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

const fs = require(`fs`);

const path = require(`path`);

const PROJECT_ROOT = path.join(__dirname, `..`);

// Get subdirectories with a `package.json` file

const directories = fs.readdirSync(PROJECT_ROOT)

.filter((dir) => fs.existsSync(path.join(PROJECT_ROOT, dir, `package.json`)));

// Dedupe package.json dependencies

// WARNING: This will fail if two different versions of the same package are required.

const pkgSet = {};

let pkgJson;

directories.forEach((dir) => {

pkgJson = JSON.parse(fs.readFileSync(path.join(PROJECT_ROOT, dir, `package.json`)));

Object.assign(pkgSet, pkgJson.dependencies);

});

// Update root-level package.json (by shelling to npm)

const spawn = require('child_process').spawn;

spawn(`yarn`, [`add`].concat(Object.keys(pkgSet).map(pkg => `${pkg}@${pkgSet[pkg]}`)));