react-native-cp-update-button/dist/lib/downloadNewVersion.js

The goal of this component is to make the workflow of letting your users explicitly update the app as simple as CodePush.sync()

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});

var _reactNativeCodePush = require('react-native-code-push');

var _reactNativeCodePush2 = _interopRequireDefault(_reactNativeCodePush);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/* If there already been a remotePackage downloaded
// use that instead of making a another trip to the server
// NOTE: Will not need to reassign to this local variable once this issue,
// https://github.com/Microsoft/react-native-code-push/issues/383, has been resolved */
var cachedVersion = void 0;

var downloadNewVersion = function downloadNewVersion(downloadProgressCallback) {
	return new Promise(function (resolve, reject) {
		if (cachedVersion) return resolve(cachedVersion);
		// If there is a local update pending use that instead of fetching
		// a potential new update from the server
		_reactNativeCodePush2.default.getUpdateMetadata(_reactNativeCodePush.UpdateState.PENDING).then(function (localUpdate) {
			cachedVersion = localUpdate;
			if (localUpdate) return resolve(localUpdate);
			// Queries the CodePush service to see whether the configured app deployment has an update available.
			// By default, it will use the deployment key that is configured in your Info.plist file (iOS), or MainActivity.java file (Android)
			_reactNativeCodePush2.default.checkForUpdate().then(function (remoteUpdate) {
				cachedVersion = remoteUpdate;
				if (!remoteUpdate) return resolve(null);
				/*
    remoteUpdate === null can be due to the following reasons:
    - No CodePush updates were installed since the last time disallowRestart was called, and therefore, there isn't any need to restart anyways.
    - There is currently a pending CodePush update, but it was installed via InstallMode.ON_NEXT_RESUME and the app hasn't been put into the background yet, and therefore, there isn't a need to programmatically restart yet.
    - The currently running app already has the latest release from the configured deployment, and therefore, doesn't need it again.
    - No calls to restartApp were made since the last time disallowRestart was called.
    */
				remoteUpdate
				// downloadProgressCallback is periodically called with a DownloadProgress object
				// than looks like { totalBytes: Number, receivedBytes: Number }
				.download(downloadProgressCallback).then(function (localUpdate) {
					cachedVersion = localUpdate;
					return resolve(localUpdate);
				});
			});
		});
	});
};

exports.default = downloadNewVersion;