#!/usr/bin/env node

const execSync = require('child_process').execSync;
const minimist = require('minimist');
const standardVersion = require('standard-version');
const chalk = require('chalk');
const args = minimist(process.argv.slice(2));

const DEFAULT_UPSTREAM_REPO_ORIGIN = 'origin';
const DEFAULT_UPSTREAM_REPO_BRANCH = 'master';
const origin = args['repo-origin'] || DEFAULT_UPSTREAM_REPO_ORIGIN;
const branch = args['repo-branch'] || DEFAULT_UPSTREAM_REPO_BRANCH;
const distTag = args['npm-dist-tag'];

console.log(chalk.blue('ℹ'), `Fetching from origin '${origin}' to read upstream version...`);
try {
  console.log(execSync(`git fetch ${origin}`).toString());
} catch (e) {
  console.log(chalk.red('✘'), 'Couldn\'t fetch latest commits. Please check the error above.');
  return;
}

const localRef = execSync(`git rev-parse ${branch}`).toString();
const originRef = execSync(`git rev-parse ${origin}/${branch}`).toString();

if (localRef !== originRef) {
  console.log(chalk.red('✘'), `Local branch '${branch}' is not up to date with '${origin}/${branch}'. Please update your local branch first.`);
  return;
}

console.log(chalk.green('✔'), 'Release branch is up to date with remote branch.');

console.log(chalk.blue('ℹ'), 'Reinstalling node_modules just to make sure that everything is up to date...');

try {
  console.log(execSync('npm run install_all').toString());
  console.log(chalk.green('✔'), 'Depencencies installed.');
} catch (e) {
  console.log(chalk.red('✘'), 'A problem occured. Please check the error above');
  return;
}

standardVersion({
  dryRun: args['dry-run'],
  prerelease: args.prerelease,
  sign: args.sign,
  releaseAs: args['release-as']
}).then(() => {
  if (!args['dry-run']) {
    console.log(chalk.blue('ℹ'), `Pushing release commit to origin '${origin}' on branch '${branch}'...`);
    try {
      const output = execSync(`git push ${origin} ${branch} --follow-tags`).toString();
      console.log(chalk.green(output));
      console.log(chalk.green('✔'), 'Successfully pushed release commit');
    } catch (e) {
      console.log(chalk.red('✘'), 'Couldn\'t push release commit. Please check the error above.');
      return { error: true };
    }
  } else {
    console.log(chalk.blue('ℹ'), 'This is a dry run. Nothing\'s being pushed.');
  }
}).then(error => {
  if (error) {
    return error;
  }
  console.log(chalk.blue('ℹ'), 'Publishing new Embark version on npm...');

  let npmPublishCommand = distTag ? `npm publish --tag ${distTag}` : 'npm publish';

  npmPublishCommand += args['dry-run'] ? ' --dry-run' : '';

  try {
    const output = execSync(npmPublishCommand).toString();
    console.log(chalk.green(output));
    if (args['dry-run']) {
      console.log(chalk.blue('ℹ'), 'This was a dry run: Successfuly published latest version.');
    } else {
      console.log(chalk.green('✔'), 'Successfully published latest version.');
    }
  } catch (e) {
    console.log(chalk.red('✘'), 'Couldn\'t publish version on npm. Please check the error above.');
    return { error: true };
  }
}).then(error => {
  if (error) {
    console.log(chalk.red('✘'), 'Stopping right here. Make sure to clean up commits and tags if needed.');
  } else {
    console.log(chalk.green('✔'), 'Woohoo! Done.');
  }
});