94 lines
3.2 KiB
Objective-C
Executable File
94 lines
3.2 KiB
Objective-C
Executable File
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "AppVersion.h"
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NSString *const kNSUserDefaults_FirstAppVersion = @"kNSUserDefaults_FirstAppVersion";
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NSString *const kNSUserDefaults_LastAppVersion = @"kNSUserDefaults_LastVersion";
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NSString *const kNSUserDefaults_LastCompletedLaunchAppVersion = @"kNSUserDefaults_LastCompletedLaunchAppVersion";
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@interface AppVersion ()
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@property (nonatomic) NSString *firstAppVersion;
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@property (nonatomic) NSString *lastAppVersion;
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@property (nonatomic) NSString *currentAppVersion;
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@property (nonatomic) NSString *lastCompletedLaunchAppVersion;
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@end
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#pragma mark -
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@implementation AppVersion
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+ (instancetype)instance {
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static AppVersion *instance = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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instance = [AppVersion new];
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[instance configure];
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});
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return instance;
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}
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- (void)configure {
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self.currentAppVersion = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
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// The version of the app when it was first launched.
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// nil if the app has never been launched before.
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self.firstAppVersion = [[NSUserDefaults standardUserDefaults] objectForKey:kNSUserDefaults_FirstAppVersion];
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// The version of the app the last time it was launched.
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// nil if the app has never been launched before.
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self.lastAppVersion = [[NSUserDefaults standardUserDefaults] objectForKey:kNSUserDefaults_LastAppVersion];
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self.lastCompletedLaunchAppVersion =
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[[NSUserDefaults standardUserDefaults] objectForKey:kNSUserDefaults_LastCompletedLaunchAppVersion];
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// Ensure the value for the "first launched version".
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if (!self.firstAppVersion) {
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self.firstAppVersion = self.currentAppVersion;
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[[NSUserDefaults standardUserDefaults] setObject:self.currentAppVersion
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forKey:kNSUserDefaults_FirstAppVersion];
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}
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// Update the value for the "most recently launched version".
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[[NSUserDefaults standardUserDefaults] setObject:self.currentAppVersion
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forKey:kNSUserDefaults_LastAppVersion];
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[[NSUserDefaults standardUserDefaults] synchronize];
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DDLogInfo(@"%@ firstAppVersion: %@", self.tag, self.firstAppVersion);
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DDLogInfo(@"%@ lastAppVersion: %@", self.tag, self.lastAppVersion);
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DDLogInfo(@"%@ currentAppVersion: %@", self.tag, self.currentAppVersion);
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DDLogInfo(@"%@ lastCompletedLaunchAppVersion: %@", self.tag, self.lastCompletedLaunchAppVersion);
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}
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- (void)appLaunchDidComplete
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{
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DDLogInfo(@"%@ appLaunchDidComplete", self.tag);
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self.lastCompletedLaunchAppVersion = self.currentAppVersion;
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// Update the value for the "most recently launch-completed version".
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[[NSUserDefaults standardUserDefaults] setObject:self.currentAppVersion
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forKey:kNSUserDefaults_LastCompletedLaunchAppVersion];
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[[NSUserDefaults standardUserDefaults] synchronize];
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}
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- (BOOL)isFirstLaunch
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{
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return self.firstAppVersion != nil;
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}
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#pragma mark - Logging
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+ (NSString *)tag
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{
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return [NSString stringWithFormat:@"[%@]", self.class];
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}
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- (NSString *)tag
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{
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return self.class.tag;
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}
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@end
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