/*
  Copyright 2019 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/

const joi = require('@hapi/joi');
const upath = require('upath');

const basePartial = require('../partials/base');
const defaults = require('../defaults');
const injectPartial = require('../partials/inject');
const webpackPartial = require('../partials/webpack');

// See https://github.com/hapijs/joi/blob/v16.0.0-rc2/API.md#anydefaultvalue-description
const swSrcBasename = (context) => {
  const {name} = upath.parse(context.swSrc);
  // Always use the .js extension when generating a default filename.
  return name + '.js';
};
swSrcBasename.description = 'derived from the swSrc file name';

const supportedOptions = Object.assign({
  compileSrc: joi.boolean().default(defaults.compileSrc),
  webpackCompilationPlugins: joi.array().items(joi.object()).when(
      'compileSrc', {is: false, then: joi.forbidden()}),
}, basePartial, injectPartial, webpackPartial);

module.exports = joi.object().keys(supportedOptions).keys({
  // List this separately, so that the swSrc validation happens first.
  swDest: joi.string().default(swSrcBasename),
});