import { log } from 'util';
import * as webpack from 'webpack';
import ExtensionReloaderImpl from '../src/ExtensionReloader';
import { info } from '../src/utils/logger';
import { IPluginOptions } from '../typings/webpack-ext-reloader';

export default class ExtensionCompiler {
  private static treatErrors(err) {
    log(err.stack || err);
    if (err.details) {
      log(err.details);
    }
  }

  private compiler;

  constructor(config: webpack.Configuration, pluginOptions: IPluginOptions) {
    this.compiler = webpack(config);
    new ExtensionReloaderImpl(pluginOptions).apply(this.compiler);
  }

  public watch() {
    // eslint-disable-next-line consistent-return
    this.compiler.watch({}, (err, stats) => {
      if (err) {
        return ExtensionCompiler.treatErrors(err);
      }
      info(stats.toString({ colors: true }));
    });
  }
}