/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

const defaultPlugins = [
  [require('babel-plugin-syntax-class-properties')],
  [require('babel-plugin-syntax-trailing-function-commas')],
  [require('babel-plugin-transform-class-properties')],
  [require('babel-plugin-transform-es2015-block-scoping')],
  [require('babel-plugin-transform-es2015-computed-properties')],
  [require('babel-plugin-transform-es2015-destructuring')],
  [require('babel-plugin-transform-es2015-function-name')],
  [require('babel-plugin-transform-es2015-literals')],
  [require('babel-plugin-transform-es2015-parameters')],
  [require('babel-plugin-transform-es2015-shorthand-properties')],
  [require('babel-plugin-transform-flow-strip-types')],
  [require('babel-plugin-transform-react-jsx')],
  [require('babel-plugin-transform-regenerator')],
  [
    require('babel-plugin-transform-es2015-modules-commonjs'),
    {strict: false, allowTopLevelThis: true},
  ],
];

const checkES2015Constants = [require('babel-plugin-check-es2015-constants')];
const es2015ArrowFunctions = [require('babel-plugin-transform-es2015-arrow-functions')];
const es2015Classes = [require('babel-plugin-transform-es2015-classes')];
const es2015ForOf = [require('babel-plugin-transform-es2015-for-of'), {loose: true}];
const es2015Spread = [require('babel-plugin-transform-es2015-spread')];
const es2015TemplateLiterals = [require('babel-plugin-transform-es2015-template-literals')];
const asyncFunctions = [require('babel-plugin-syntax-async-functions')];
const exponentiationOperator = [require('babel-plugin-transform-exponentiation-operator')];
const objectAssign = [require('babel-plugin-transform-object-assign')];
const objectRestSpread = [require('babel-plugin-transform-object-rest-spread')];
const reactDisplayName = [require('babel-plugin-transform-react-display-name')];
const reactJsxSource = [require('babel-plugin-transform-react-jsx-source')];
const symbolMember = [require('../transforms/transform-symbol-member')];

const getPreset = (src, options) => {
  const isNull = src === null || src === undefined;
  const hasClass = isNull || src.indexOf('class') !== -1;
  const hasForOf =
    isNull || (src.indexOf('for') !== -1 && src.indexOf('of') !== -1);

  const extraPlugins = [];

  if (isNull || src.indexOf('async') !== -1 || src.indexOf('await') !== -1) {
    extraPlugins.push(asyncFunctions);
  }
  if (hasClass) {
    extraPlugins.push(es2015Classes);
  }
  if (isNull || src.indexOf('=>') !== -1) {
    extraPlugins.push(es2015ArrowFunctions);
  }
  if (isNull || src.indexOf('const') !== -1) {
    extraPlugins.push(checkES2015Constants);
  }
  if (isNull || hasClass || src.indexOf('...') !== -1) {
    extraPlugins.push(es2015Spread);
    extraPlugins.push(objectRestSpread);
  }
  if (isNull || src.indexOf('`') !== -1) {
    extraPlugins.push(es2015TemplateLiterals);
  }
  if (isNull || src.indexOf('**') !== -1) {
    extraPlugins.push(exponentiationOperator);
  }
  if (isNull || src.indexOf('Object.assign') !== -1) {
    extraPlugins.push(objectAssign);
  }
  if (hasForOf) {
    extraPlugins.push(es2015ForOf);
  }
  if (hasForOf || src.indexOf('Symbol') !== -1) {
    extraPlugins.push(symbolMember);
  }
  if (
    isNull ||
    src.indexOf('React.createClass') !== -1 ||
    src.indexOf('createReactClass') !== -1
  ) {
    extraPlugins.push(reactDisplayName);
  }

  if (options && options.dev) {
    extraPlugins.push(reactJsxSource);
  }

  return {
    comments: false,
    compact: true,
    plugins: defaultPlugins.concat(extraPlugins),
  };
};

const base = getPreset(null);
const devTools = getPreset(null, {dev: true});

module.exports = options => {
  if (options.withDevTools == null) {
    const env = process.env.BABEL_ENV || process.env.NODE_ENV;
    if (!env || env === 'development') {
      return devTools;
    }
  }
  return base;
};

module.exports.getPreset = getPreset;