'use strict';

// As of v14, Node.js does not exit when there is an unhandled Promise rejection. Convert an
// unhandled rejection into an uncaught exception, which does cause Node.js to exit.
process.on('unhandledRejection', (err) => { throw err; });

const fs = require('fs');
const childProcess = require('child_process');
const semver = require('semver');

/*

Usage

node src/bin/release.js patch

*/
const usage =
    'node src/bin/release.js [patch/minor/major] -- example: "node src/bin/release.js patch"';

const release = process.argv[2];

if (!release) {
  console.log(usage);
  throw new Error('No release type included');
}

const changelog = fs.readFileSync('CHANGELOG.md', {encoding: 'utf8', flag: 'r'});
let packageJson = fs.readFileSync('./src/package.json', {encoding: 'utf8', flag: 'r'});
packageJson = JSON.parse(packageJson);
const currentVersion = packageJson.version;

const newVersion = semver.inc(currentVersion, release);
if (!newVersion) {
  console.log(usage);
  throw new Error('Unable to generate new version from input');
}

const changelogIncludesVersion = changelog.indexOf(newVersion) !== -1;

if (!changelogIncludesVersion) {
  throw new Error('No changelog record for ', newVersion, ' - please create changelog record');
}

console.log('Okay looks good, lets create the package.json and package-lock.json');

packageJson.version = newVersion;

fs.writeFileSync('src/package.json', JSON.stringify(packageJson, null, 2));

// run npm version `release` where release is patch, minor or major
childProcess.execSync('npm install --package-lock-only', {cwd: 'src/'});
// run npm install --package-lock-only <-- required???

childProcess.execSync(`git checkout -b release/${newVersion}`);
childProcess.execSync('git add src/package.json');
childProcess.execSync('git add src/package-lock.json');
childProcess.execSync('git commit -m "bump version"');
childProcess.execSync(`git push origin release/${newVersion}`);


childProcess.execSync('make docs');
childProcess.execSync('git clone git@github.com:ether/ether.github.com.git');
childProcess.execSync(`cp -R out/doc/ ether.github.com/doc/v${newVersion}`);

console.log('Once merged into master please run the following commands');
console.log(`git tag -a ${newVersion} -m ${newVersion} && git push origin master`);
console.log(`cd ether.github.com && git add . && git commit -m '${newVersion} docs'`);
console.log('Build the windows zip');
console.log('Visit https://github.com/ether/etherpad-lite/releases/new and create a new release ' +
            `with 'master' as the target and the version is ${newVersion}.  Include the windows ` +
            'zip as an asset');
console.log(`Once the new docs are uploaded then modify the download
   link on etherpad.org and then pull master onto develop`);
console.log('Finally go public with an announcement via our comms channels :)');