How to use SurveyMonkey in React Native

Issue #521

#import <React/RCTBridgeModule.h>

@interface RNSurveyManager : NSObject <RCTBridgeModule>

@end

#import "RNSurveyManager.h"
#import <React/RCTLog.h>
#import <SurveyMonkeyiOSSDK/SurveyMonkeyiOSSDK.h>

@interface RNSurveyManager()<SMFeedbackDelegate>
@property (nonatomic, strong) SMFeedbackViewController * feedbackController;
@end

@implementation RNSurveyManager

- (instancetype)init {
  self = [super init];
  if (self) {
    self.feedbackController = [[SMFeedbackViewController alloc] initWithSurvey:@"VV8X5QA"];
    self.feedbackController.delegate = self;
  }
  return self;
}

+ (BOOL)requiresMainQueueSetup {
  return YES;
}

- (dispatch_queue_t)methodQueue {
  return dispatch_get_main_queue();
}

RCT_EXPORT_MODULE(SurveyManager);

- (void)respondentDidEndSurvey:(SMRespondent *)respondent error:(NSError *)error {
  NSLog(@"respondent %@ error %@", respondent, error);
}

RCT_EXPORT_METHOD(show:(RCTResponseSenderBlock)callback) {
  [UIApplication.sharedApplication.keyWindow.rootViewController
   presentViewController:self.feedbackController
   animated:YES
   completion:^() {
     callback(@[]);
   }];
}

@end

// @flow

import { NativeModules } from 'react-native'

type SurveyManagerType = {
  show: () => void
}

const SurveyManager: SurveyManagerType = NativeModules.SurveyManager
export default SurveyManager