react-native-google-cast/lib/module/plugin/withIosGoogleCast.js

React Native wrapper for the Google Cast SDK for iOS and Android

import { withAppDelegate, withInfoPlist } from '@expo/config-plugins';
import { mergeContents } from '@expo/config-plugins/build/utils/generateCode';
const LOCAL_NETWORK_USAGE = '${PRODUCT_NAME} uses the local network to discover Cast-enabled devices on your WiFi network';

/**
 * On iOS, a dialog asking the user for the local network permission will now be displayed immediately when the app is opened.
 *
 * @param {*} config
 * @param {*} props.receiverAppId If using a custom receiver, make sure to replace `CC1AD845` with your custom receiver app id.
 * @returns
 */
const withIosLocalNetworkPermissions = (config, {
  receiverAppId = 'CC1AD845'
} = {}) => {
  return withInfoPlist(config, config_ => {
    if (!Array.isArray(config_.modResults.NSBonjourServices)) {
      config_.modResults.NSBonjourServices = [];
    }
    // Add required values
    config_.modResults.NSBonjourServices.push('_googlecast._tcp', `_${receiverAppId}._googlecast._tcp`);

    // Remove duplicates
    config_.modResults.NSBonjourServices = [...new Set(config_.modResults.NSBonjourServices)];

    // For iOS 14+, you need to add local network permissions to Info.plist:
    // https://developers.google.com/cast/docs/ios_sender/ios_permissions_changes#updating_your_app_on_ios_14
    config_.modResults.NSLocalNetworkUsageDescription = config_.modResults.NSLocalNetworkUsageDescription || LOCAL_NETWORK_USAGE;
    return config_;
  });
};

// TODO: Use AppDelegate swizzling
const withIosAppDelegateLoaded = (config, props) => {
  return withAppDelegate(config, config_ => {
    if (config_.modResults.language === 'swift') {
      config_.modResults.contents = addSwiftGoogleCastAppDelegateDidFinishLaunchingWithOptions(config_.modResults.contents, props).contents;
      config_.modResults.contents = addSwiftGoogleCastAppDelegateImport(config_.modResults.contents).contents;
    } else if (config_.modResults.language === 'objc' || config_.modResults.language === 'objcpp') {
      config_.modResults.contents = addGoogleCastAppDelegateDidFinishLaunchingWithOptions(config_.modResults.contents, props).contents;
      config_.modResults.contents = addGoogleCastAppDelegateImport(config_.modResults.contents).contents;
    }
    return config_;
  });
};
export const withIosGoogleCast = (config, props) => {
  config = withIosLocalNetworkPermissions(config, {
    receiverAppId: props.receiverAppId
  });
  config = withIosAppDelegateLoaded(config, {
    disableDiscoveryAutostart: props.disableDiscoveryAutostart,
    expandedController: props.expandedController,
    receiverAppId: props.receiverAppId,
    startDiscoveryAfterFirstTapOnCastButton: props.startDiscoveryAfterFirstTapOnCastButton,
    suspendSessionsWhenBackgrounded: props.suspendSessionsWhenBackgrounded
  });
  return config;
};

// From expo-cli RNMaps setup
export const MATCH_INIT = /-\s*\(BOOL\)\s*application:\s*\(UIApplication\s*\*\s*\)\s*\w+\s+didFinishLaunchingWithOptions:/g;
export function addGoogleCastAppDelegateDidFinishLaunchingWithOptions(src, {
  disableDiscoveryAutostart = false,
  expandedController = false,
  receiverAppId = null,
  startDiscoveryAfterFirstTapOnCastButton = true,
  suspendSessionsWhenBackgrounded = true
} = {}) {
  let newSrc = [];
  newSrc.push(
  // For extra safety
  '#if __has_include(<GoogleCast/GoogleCast.h>)',
  // TODO: This should probably read safely from a static file like the Info.plist
  `  NSString *receiverAppID = ${receiverAppId ? `@"${receiverAppId}"` : 'kGCKDefaultMediaReceiverApplicationID'};`, '  GCKDiscoveryCriteria *criteria = [[GCKDiscoveryCriteria alloc] initWithApplicationID:receiverAppID];', '  GCKCastOptions* options = [[GCKCastOptions alloc] initWithDiscoveryCriteria:criteria];', `  options.disableDiscoveryAutostart = ${String(!!disableDiscoveryAutostart)};`, `  options.startDiscoveryAfterFirstTapOnCastButton = ${String(!!startDiscoveryAfterFirstTapOnCastButton)};`, `  options.suspendSessionsWhenBackgrounded = ${String(!!suspendSessionsWhenBackgrounded)};`, '  [GCKCastContext setSharedInstanceWithOptions:options];', `  [GCKCastContext sharedInstance].useDefaultExpandedMediaControls = ${String(!!expandedController)};`, '#endif');
  newSrc = newSrc.filter(Boolean);
  return mergeContents({
    tag: 'react-native-google-cast-didFinishLaunchingWithOptions',
    src,
    newSrc: newSrc.join('\n'),
    anchor: MATCH_INIT,
    offset: 2,
    comment: '//'
  });
}
function addGoogleCastAppDelegateImport(src) {
  const newSrc = [];
  newSrc.push('#if __has_include(<GoogleCast/GoogleCast.h>)', '#import <GoogleCast/GoogleCast.h>', '#endif');
  return mergeContents({
    tag: 'react-native-google-cast-import',
    src,
    newSrc: newSrc.join('\n'),
    anchor: /#import "AppDelegate\.h"/,
    offset: 1,
    comment: '//'
  });
}
function addSwiftGoogleCastAppDelegateImport(src) {
  const newSrc = [];
  newSrc.push('#if canImport(GoogleCast) && os(iOS)', 'import GoogleCast', '#endif');
  return mergeContents({
    tag: 'react-native-google-cast-import',
    src,
    newSrc: newSrc.join('\n'),
    anchor: /import React/,
    offset: 0,
    comment: '//'
  });
}
export function addSwiftGoogleCastAppDelegateDidFinishLaunchingWithOptions(src, {
  disableDiscoveryAutostart = false,
  expandedController = false,
  receiverAppId = null,
  startDiscoveryAfterFirstTapOnCastButton = true,
  suspendSessionsWhenBackgrounded = true
} = {}) {
  let newSrc = [];
  newSrc.push(
  // For extra safety
  '#if canImport(GoogleCast) && os(iOS)', `    let receiverAppID = ${receiverAppId ? `"${receiverAppId}"` : 'kGCKDefaultMediaReceiverApplicationID'}`, '    let criteria = GCKDiscoveryCriteria(applicationID: receiverAppID)', '    let options = GCKCastOptions(discoveryCriteria: criteria)', `    options.disableDiscoveryAutostart = ${String(!!disableDiscoveryAutostart)}`, `    options.startDiscoveryAfterFirstTapOnCastButton = ${String(!!startDiscoveryAfterFirstTapOnCastButton)}`, `    options.suspendSessionsWhenBackgrounded = ${String(!!suspendSessionsWhenBackgrounded)}`, '    GCKCastContext.setSharedInstanceWith(options)', `    GCKCastContext.sharedInstance().useDefaultExpandedMediaControls = ${String(!!expandedController)}`, '#endif');
  newSrc = newSrc.filter(Boolean);
  return mergeContents({
    tag: 'react-native-google-cast-didFinishLaunchingWithOptions',
    src,
    newSrc: newSrc.join('\n'),
    anchor: /let\s+delegate\s*=\s*ReactNativeDelegate\(\)/,
    offset: 0,
    comment: '//'
  });
}
//# sourceMappingURL=withIosGoogleCast.js.map