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//
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
//
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@interface AppVersion : NSObject
// The properties are updated immediately after launch.
@property (atomic, readonly) NSString *firstAppVersion;
@property (atomic, nullable, readonly) NSString *lastAppVersion;
@property (atomic, readonly) NSString *currentAppVersion;
// There properties aren't updated until appLaunchDidComplete is called.
@property (atomic, nullable, readonly) NSString *lastCompletedLaunchAppVersion;
@property (atomic, nullable, readonly) NSString *lastCompletedLaunchMainAppVersion;
@property (atomic, nullable, readonly) NSString *lastCompletedLaunchSAEAppVersion;
- (instancetype)init NS_UNAVAILABLE;
+ (instancetype)sharedInstance;
- (void)mainAppLaunchDidComplete;
- (void)saeLaunchDidComplete;
- (BOOL)isFirstLaunch;
@end
NS_ASSUME_NONNULL_END