#!/usr/bin/env node

/*
  Copyright © 2018 Andrew Powell

  This Source Code Form is subject to the terms of the Mozilla Public
  License, v. 2.0. If a copy of the MPL was not distributed with this
  file, You can obtain one at http://mozilla.org/MPL/2.0/.

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of this Source Code Form.
*/
// require('v8-compile-cache');

const chalk = require('chalk');
const importLocal = require('import-local');
const parse = require('yargs-parser');
const webpack = require('webpack');

const pkg = require('../package.json');
const { check } = require('../lib/flags');
const { run } = require('../lib/compiler');
const { loadConfig } = require('../lib/config');

const { error: stderr } = console;
const end = () => process.exit(0);

const help = chalk`
  ${pkg.description}

  {underline Usage}
    $ webpack-serve [...options]

  {underline Options}
    --all               Apply webpack-plugin-serve to all compilers in the config
    --client.address    Overrides the WebSocket address in the client
    --client.retry      Instructs the client to attempt to reconnect all WebSockets when interrupted
    --client.silent     Instructs the client not to log anything to the console
    --compress          Enables compression middleware which serves files with GZip compression
    --config            A path to a webpack config file
    --config.\{name\}   A path to a webpack config file, and the config name to run
    --help              Displays this message
    --history-fallback  Enables History API Fallback
    --hmr               Enables Hot Module Replacement. On by default
    --host              Sets the host the server should listen from
    --http2             Instructs the server to enable HTTP2
    --live-reload       Instructs the client to perform a full page reload after each build
    --no-watch          Does not apply \`watch: true\` to the config, allowing for greater customization
    --open              Opens the default browser to the set host and port
    --port              Sets the port on which the server should listen
    --progress          Shows build progress in the client
    --silent            Instruct the CLI to produce no console output
    --static            Sets the directory from which static files will be served
    --status            Shows build status (errors, warnings) in the client
    --version           Displays webpack-nano and webpack versions
    --wait-for-build    Instructs the server to halt middleware processing until the current build is done

  {underline Examples}
    $ webpack-serve
    $ webpack-serve --help
    $ webpack-serve --config webpack.config.js
    $ webpack-serve --config.serve webpack.config.js
`;

const doeet = async () => {
  process.on('SIGINT', end);
  process.on('SIGTERM', end);

  const argv = parse(process.argv.slice(2));
  const logPrefix = { ok: chalk.blue('⬡ webpack:'), whoops: chalk.red('⬢ webpack:') };
  const log = {
    error: (...args) => {
      if (argv.silent) return;
      args.unshift(logPrefix.whoops);
      stderr(...args);
    },
    info: (...args) => {
      if (argv.silent) return;
      args.unshift(logPrefix.ok);
      stderr(...args);
    }
  };

  check(argv);

  if (argv.help) {
    stderr(help);
    return;
  }

  if (argv.version || argv.v) {
    stderr(`
webpack-serve v${pkg.version}
webpack       v${webpack.version}
`);
    return;
  }

  const config = await loadConfig(argv);

  run(config, log);
};

process.on('unhandledRejection', (err) => {
  stderr(err.stack);
  process.exitCode = 1;
});

// eslint-disable-next-line no-unused-expressions
importLocal(__filename) || doeet();