#import "UnionAdSsgfEvent.h"
#import <Flutter/Flutter.h>

@interface UnionAdSsgfEvent () <FlutterStreamHandler>
@property(nonatomic, strong) FlutterEventSink eventSink;
@end

@implementation UnionAdSsgfEvent

+ (instancetype)sharedInstance {
  static UnionAdSsgfEvent *myInstance = nil;
  if (myInstance == nil) {
    myInstance = [[UnionAdSsgfEvent alloc] init];
  }
  return myInstance;
}

- (void)initEvent:(NSObject<FlutterPluginRegistrar> *)registrar {
  FlutterEventChannel *eventChannel = [FlutterEventChannel
                                       eventChannelWithName:@"com.example.union_ad_ssgf/adevent"
                                       binaryMessenger:[registrar messenger]];
  [eventChannel setStreamHandler:self];
}

- (void)sentEvent:(NSDictionary *)arguments {
  self.eventSink(arguments);
}

#pragma mark - FlutterStreamHandler
- (FlutterError *_Nullable)onCancelWithArguments:(id _Nullable)arguments {
  self.eventSink = nil;
  return nil;
}

- (FlutterError *_Nullable)onListenWithArguments:(id _Nullable)arguments
                                       eventSink:
                                           (nonnull FlutterEventSink)events {
  self.eventSink = events;
  return nil;
}
@end