#!/usr/bin/env node

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
// terminate the Node.js process with a non-zero exit code.
process.on('unhandledRejection', (err) => {
  throw err;
});

// Note: we're intentionally using `var` here in case Diez is running on a very old version of Node.
var semver = require('semver');
if (semver.gt('7.6.0', process.version)) {
  console.log('Your Node version is incompatible with Diez. Please upgrade to a newer version.');
  process.exit(1);
}

// Monkey-patch `require()` so the `.diezrc` autodiscovery mechanism can work across monorepos.
// TODO: we should have a way to *only* do this while developing across monorepos.
const {addPath} = require('app-module-path');
const {Module} = require('module');
for (const requirePath of Module._nodeModulePaths(global.process.cwd())) {
  addPath(requirePath);
}

(async () => {
  const packageJson = require('package-json');
  const {Log, diezVersion, loadingMessage} = require('@diez/cli-core');
  const {join} = require('path');
  const {clearLine} = require('readline');

  // Perform a fast DNS resolution check to avoid a hung version check.
  require('dns').lookup('npmjs.com', async (err) => {
    if (err) {
      require('@diez/cli-core/lib/cli').run(join(__dirname, '..'));
      return;
    }

    // Make a simple spinner for our update check.
    const spinner = loadingMessage('Checking for updates...');

    try {
      const {version: latestVersion} = await packageJson('@diez/cli-core');
      if (semver.gt(latestVersion, diezVersion)) {
        Log.warning('You are using an out-of-date version of Diez. Please upgrade to the latest version:\n');
        Log.info('If you are using yarn:');
        Log.code('yarn upgrade diez --latest\n\n');
        Log.info('If you are using npm:');
        Log.code(`npm install diez@${latestVersion} --save\n\n `);
      }
    } catch (_) {
      // Noop.
    } finally {
      spinner.stop();
      clearLine(process.stdout);
      require('@diez/cli-core/lib/cli').run(join(__dirname, '..'));
    }
  });
})();