#!/usr/bin/env node

/**

* Copyright 2017, 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.

*/

'use strict';

const fs = require(`fs`);

const path = require(`path`);

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

// Dedupe package.json dependencies

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

const pkgSet = {};

function getDeps (directory, depth) {

// Limit recursion depth

if (depth < 0) {

return;

}

// Skip module directories

if (directory.includes('node_modules')) {

return;

}

// Get subdirectories

const dirs = fs.readdirSync(directory)

// Record subdirectories that contain a package.json file

let pkgJson;

const pkgJsonDirs = dirs.filter((dir) =>

fs.existsSync(path.join(directory, dir, `package.json`))

);

pkgJsonDirs.forEach((dir) => {

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

Object.assign(pkgSet, pkgJson.dependencies);

});

// Recurse

const recurseDirs = dirs.filter((dir) => {

return fs.statSync(path.join(directory, dir)).isDirectory();

});

recurseDirs.forEach((dir) => {

getDeps(path.join(directory, dir), depth-1);

});

};

getDeps(PROJECT_ROOT, 3);

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

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

const args = [`add`, `-D`].concat(Object.keys(pkgSet).map(pkg => `${pkg}@${pkgSet[pkg]}`));

spawn(`yarn`, args, {

cwd: PROJECT_ROOT

});