/**
 * Copyright 2020 Google Inc. All rights reserved.
 *
 * 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.
 */

import {Product} from './common/Product.js';
import {rootDirname} from './constants.js';
import {PuppeteerNode} from './node/Puppeteer.js';
import {PUPPETEER_REVISIONS} from './revisions.js';
import {getPackageDirectory} from './util/getPackageDirectory.js';

/**
 * @internal
 */
export const initializePuppeteer = (packageName: string): PuppeteerNode => {
  const isPuppeteerCore = packageName === 'puppeteer-core';
  let preferredRevision = PUPPETEER_REVISIONS.chromium;
  // puppeteer-core ignores environment variables
  const productName = !isPuppeteerCore
    ? ((process.env['PUPPETEER_PRODUCT'] ||
        process.env['npm_config_puppeteer_product'] ||
        process.env['npm_package_config_puppeteer_product']) as Product)
    : undefined;

  if (!isPuppeteerCore && productName === 'firefox') {
    preferredRevision = PUPPETEER_REVISIONS.firefox;
  }

  return new PuppeteerNode({
    projectRoot: isPuppeteerCore ? undefined : getPackageDirectory(rootDirname),
    preferredRevision,
    isPuppeteerCore,
    productName,
  });
};