#!/usr/bin/env node
/**
 * Copyright 2017 Google Inc. All rights reserved.
 * Modifications copyright (c) Microsoft Corporation.
 *
 * 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 path = require('path');
const { Registry } = require('../packages/playwright-core/lib/coreBundle').registry;
const fs = require('fs');
const protocolGenerator = require('./protocol-types-generator');
const {execSync} = require('child_process');
const playwright = require('playwright-core');

const SCRIPT_NAME = path.basename(__filename);
const CORE_PATH = path.resolve(path.join(__dirname, '..', 'packages', 'playwright-core'));

function usage() {
  return `
usage: ${SCRIPT_NAME} <browser> <revision> [version]

Roll the <browser> to a specific <revision> and generate new protocol.
Version is required for chromium-based browsers.
Supported browsers: chromium, firefox, webkit, ffmpeg, firefox-beta.

Example:
  ${SCRIPT_NAME} chromium 123456 123.0.1234.56
  ${SCRIPT_NAME} webkit 123456
`;
}

(async () => {
  // 1. Parse CLI arguments
  const args = process.argv.slice(2);
  if (args.some(arg => arg === '--help')) {
    console.log(usage());
    process.exit(1);
  } else if (args.length < 1) {
    console.log(`Please specify the browser name, e.g. 'chromium'.`);
    console.log(`Try running ${SCRIPT_NAME} --help`);
    process.exit(1);
  } else if (args.length < 2) {
    console.log(`Please specify the revision`);
    console.log(`Try running ${SCRIPT_NAME} --help`);
    process.exit(1);
  }
  const browsersJSON = require(path.join(CORE_PATH, 'browsers.json'));
  const browserName = {
    'cr': 'chromium',
    'ff': 'firefox',
    'ff-beta': 'firefox-beta',
    'wk': 'webkit',
  }[args[0].toLowerCase()] ?? args[0].toLowerCase();
  const browserTypeName = browserName.split('-')[0];
  const descriptors = browsersJSON.browsers.filter(b =>
    b.name === browserName || b.name === `${browserName}-headless-shell`
  );

  if (!descriptors.length) {
    console.log(`Unknown browser "${browserName}"`);
    console.log(`Try running ${SCRIPT_NAME} --help`);
    process.exit(1);
  }

  const revision = args[1];
  let browserVersion = args[2];
  console.log(`Rolling ${browserName} to ${revision}`);
  if (browserVersion) {
    console.log(`Browser version: ${browserVersion}`);
  } else if (browserTypeName === 'chromium') {
    console.log(`Chromium-based browsers must provide a version`);
    process.exit(1);
  }

  // 2. Update browser revisions in browsers.json.
  console.log('\nUpdating revision in browsers.json...');
  for (const descriptor of descriptors) {
    descriptor.revision = String(revision);
    if (browserVersion)
      descriptor.browserVersion = browserVersion;
  }
  fs.writeFileSync(path.join(CORE_PATH, 'browsers.json'), JSON.stringify(browsersJSON, null, 2) + '\n');

  // 3. Download new browser.
  console.log('\nDownloading new browser...');
  const registry = new Registry(browsersJSON);
  const executable = registry.findExecutable(browserName);
  await registry.installDeps([executable]);
  await registry.install([...registry.defaultExecutables(), executable]);

  // 4. Update browser version if rolling WebKit / Firefox, validate if rolling Chromium.
  const browserType = playwright[browserTypeName];
  if (browserType) {
    const browser = await browserType.launch({
      executablePath: executable.executablePath('javascript'),
    });
    const downloadedVersion = await browser.version();
    await browser.close();

    if (browserVersion && downloadedVersion !== browserVersion) {
      console.error(`\nError: Provided browser version "${browserVersion}" does not match downloaded version "${downloadedVersion}".`);
      console.error(`Please verify that revision ${revision} corresponds to version ${browserVersion}.`);
      process.exit(1);
    }

    if (!browserVersion) {
      console.log('\nUpdating browser version in browsers.json...');
      for (const descriptor of descriptors)
        descriptor.browserVersion = downloadedVersion;
      fs.writeFileSync(path.join(CORE_PATH, 'browsers.json'), JSON.stringify(browsersJSON, null, 2) + '\n');
    }
  }

  if (browserType && descriptors[0].installByDefault) {
    // 5. Generate types.
    console.log('\nGenerating protocol types...');
    const executablePath = registry.findExecutable(browserName).executablePathOrDie();
    await protocolGenerator.generateProtocol(browserName, executablePath);

    // 6. Update docs.
    console.log('\nUpdating documentation...');
    try {
      execSync('npm run doc', { stdio: 'inherit' });
    } catch (e) {
      console.log('npm run doc failed with non-zero exit code. This might have updated generated files.');
    }
  }
  console.log(`\nRolled ${browserName} to ${revision}`);
})().catch(err => {
  console.error(err);
  process.exit(1);
});

