#!/usr/bin/env node

'use strict';

const clear = require('clear');
const {existsSync} = require('fs');
const {readJsonSync} = require('fs-extra');
const {join} = require('path');
const theme = require('../theme');
const {execRead} = require('../utils');

const run = async ({cwd, packages, tags}) => {
  // Tags are named after the react version.
  const {version} = readJsonSync(
    `${cwd}/build/node_modules/react/package.json`
  );

  clear();

  if (tags.length === 1 && tags[0] === 'next') {
    console.log(
      theme`{header A "next" release} {version ${version}} {header has been published!}`
    );
  } else if (tags.length === 1 && tags[0] === 'experimental') {
    console.log(
      theme`{header An "experimental" release} {version ${version}} {header has been published!}`
    );
  } else {
    const nodeModulesPath = join(cwd, 'build/node_modules');

    console.log(
      theme.caution`The release has been published but you're not done yet!`
    );

    if (tags.includes('latest')) {
      // All packages are built from a single source revision,
      // so it is safe to read build info from any one of them.
      const arbitraryPackageName = packages[0];
      // FIXME: New build script does not output build-info.json. It's only used
      // by this post-publish print job, and only for "latest" releases, so I've
      // disabled it as a workaround so the publish script doesn't crash for
      // "next" and "experimental" pre-releases.
      const {commit} = readJsonSync(
        join(
          cwd,
          'build',
          'node_modules',
          arbitraryPackageName,
          'build-info.json'
        )
      );

      console.log();
      console.log(
        theme.header`Please review and commit all local, staged changes.`
      );

      console.log();
      console.log('Version numbers have been updated in the following files:');
      for (let i = 0; i < packages.length; i++) {
        const packageName = packages[i];
        console.log(theme.path`• packages/%s/package.json`, packageName);
      }
      const status = await execRead(
        'git diff packages/shared/ReactVersion.js',
        {cwd}
      );
      if (status) {
        console.log(theme.path`• packages/shared/ReactVersion.js`);
      }

      console.log();
      console.log(
        theme`{header Don't forget to also update and commit the }{path CHANGELOG}`
      );

      // Prompt the release engineer to tag the commit and update the CHANGELOG.
      // (The script could automatically do this, but this seems safer.)
      console.log();
      console.log(
        theme.header`Tag the source for this release in Git with the following command:`
      );
      console.log(
        theme`  {command git tag -a v}{version %s} {command -m "v%s"} {version %s}`,
        version,
        version,
        commit
      );
      console.log(theme.command`  git push origin --tags`);

      console.log();
      console.log(theme.header`Lastly, please fill in the release on GitHub.`);
      console.log(
        theme.link`https://github.com/facebook/react/releases/tag/v%s`,
        version
      );
      console.log(
        theme`\nThe GitHub release should also include links to the following artifacts:`
      );
      for (let i = 0; i < packages.length; i++) {
        const packageName = packages[i];
        if (existsSync(join(nodeModulesPath, packageName, 'umd'))) {
          const {version: packageVersion} = readJsonSync(
            join(nodeModulesPath, packageName, 'package.json')
          );
          console.log(
            theme`{path • %s:} {link https://unpkg.com/%s@%s/umd/}`,
            packageName,
            packageName,
            packageVersion
          );
        }
      }

      // Update reactjs.org so the React version shown in the header is up to date.
      console.log();
      console.log(
        theme.header`Once you've pushed changes, update the docs site.`
      );
      console.log(
        'This will ensure that any newly-added error codes can be decoded.'
      );

      console.log();
    }
  }
};

module.exports = run;
