/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule setupDevtools
 * @flow
 */
'use strict';

if (__DEV__) {
  var AppState = require('AppState');
  var NativeModules = require('NativeModules');
  var Platform = require('Platform');
  var {connectToDevTools} = require('react-devtools-core');

  connectToDevTools({
    isAppActive() {
      // Don't steal the DevTools from currently active app.
      // Note: if you add any AppState subscriptions to this file,
      // you will also need to guard against `AppState.isAvailable`,
      // or the code will throw for bundles that don't have it.
      return AppState.currentState !== 'background';
    },
    // Special case: Genymotion is running on a different host.
    host: (Platform.OS === 'android' && NativeModules.AndroidConstants) ?
      NativeModules.AndroidConstants.ServerHost.split(':')[0] :
      'localhost',
    // Read the optional global variable for backward compatibility.
    // It was added in https://github.com/facebook/react-native/commit/bf2b435322e89d0aeee8792b1c6e04656c2719a0.
    port: window.__REACT_DEVTOOLS_PORT__,
    resolveRNStyle: require('flattenStyle'),
  });
}