Filza 27.2 worse_query: public and developer builds
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#import "UpdateChecker.h"
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#import <UIKit/UIKit.h>
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static NSString *const kFSUpdateAPIURL =
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@"https://api.github.com/repos/0xjohnnydev/FilzaSlop/releases/latest";
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static NSString *const kFSVersionInfoKey = @"FilzaSlopVersion";
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static NSString *const kFSLastCheckDateKey = @"FilzaSlopUpdateLastCheckDate";
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static NSString *const kFSLastCheckedVersionKey =
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@"FilzaSlopUpdateLastCheckedVersion";
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static NSString *const kFSLastAlertedTagKey =
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@"FilzaSlopUpdateLastAlertedTag";
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static const NSTimeInterval kFSUpdateCheckInterval = 24.0 * 60.0 * 60.0;
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static BOOL gFSUpdateCheckerStarted;
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static BOOL gFSUpdateCheckInFlight;
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static BOOL gFSUpdatePresentationScheduled;
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static NSDictionary<NSString *, NSString *> *gFSPendingRelease;
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static NSString *FSUpdateVersion(NSString *value)
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{
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if (![value isKindOfClass:NSString.class]) return nil;
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NSString *version = [value stringByTrimmingCharactersInSet:
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NSCharacterSet.whitespaceAndNewlineCharacterSet];
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if ([version hasPrefix:@"v"] || [version hasPrefix:@"V"])
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version = [version substringFromIndex:1];
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return version.length > 0 ? version : nil;
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}
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static NSString *FSCurrentVersion(void)
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{
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return FSUpdateVersion([NSBundle.mainBundle objectForInfoDictionaryKey:
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kFSVersionInfoKey]);
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}
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static BOOL FSUpdateVersionIsNewer(NSString *latest, NSString *current)
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{
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NSString *latestVersion = FSUpdateVersion(latest);
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NSString *currentVersion = FSUpdateVersion(current);
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if (!latestVersion || !currentVersion) return NO;
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return [latestVersion compare:currentVersion options:NSNumericSearch] ==
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NSOrderedDescending;
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}
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static UIViewController *FSTopViewController(UIViewController *controller)
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{
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UIViewController *current = controller;
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while (current) {
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UIViewController *next = nil;
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if (current.presentedViewController &&
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!current.presentedViewController.isBeingDismissed) {
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next = current.presentedViewController;
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} else if ([current isKindOfClass:UINavigationController.class]) {
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next = ((UINavigationController *)current).visibleViewController;
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} else if ([current isKindOfClass:UITabBarController.class]) {
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next = ((UITabBarController *)current).selectedViewController;
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}
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if (!next || next == current) break;
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current = next;
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}
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return current;
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}
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static UIViewController *FSUpdatePresenter(void)
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{
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UIApplication *application = UIApplication.sharedApplication;
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UIWindow *selectedWindow = nil;
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for (UIScene *scene in application.connectedScenes) {
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if (![scene isKindOfClass:UIWindowScene.class] ||
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scene.activationState != UISceneActivationStateForegroundActive)
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continue;
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for (UIWindow *window in ((UIWindowScene *)scene).windows) {
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if (window.isHidden || window.alpha == 0.0 || !window.rootViewController)
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continue;
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if (window.isKeyWindow) return FSTopViewController(window.rootViewController);
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if (!selectedWindow) selectedWindow = window;
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}
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}
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return selectedWindow ? FSTopViewController(selectedWindow.rootViewController)
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: nil;
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}
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static NSURL *FSReleaseURL(NSString *value)
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{
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NSURL *url = [NSURL URLWithString:value ?: @""];
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NSString *host = url.host.lowercaseString;
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NSString *path = url.path.lowercaseString;
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if (![url.scheme.lowercaseString isEqualToString:@"https"] ||
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![host isEqualToString:@"github.com"] ||
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![path hasPrefix:@"/0xjohnnydev/filzaslop/releases/"])
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return nil;
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return url;
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}
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static void FSScheduleUpdatePresentation(NSUInteger attemptsRemaining);
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static void FSPresentPendingUpdate(void)
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{
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NSDictionary<NSString *, NSString *> *release = gFSPendingRelease;
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if (!release) return;
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UIViewController *presenter = FSUpdatePresenter();
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if (!presenter || !presenter.view.window || presenter.isBeingDismissed ||
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[presenter isKindOfClass:UIAlertController.class])
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return;
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NSString *tag = release[@"tag"];
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NSString *current = FSCurrentVersion();
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NSURL *releaseURL = FSReleaseURL(release[@"url"]);
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if (!tag.length || !current.length || !releaseURL) {
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gFSPendingRelease = nil;
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return;
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}
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NSString *message = [NSString stringWithFormat:
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@"Version %@ is available. You have version %@.", tag, current];
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UIAlertController *alert = [UIAlertController
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alertControllerWithTitle:@"FilzaSlop Update Available"
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message:message preferredStyle:UIAlertControllerStyleAlert];
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[alert addAction:[UIAlertAction actionWithTitle:@"Later"
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style:UIAlertActionStyleCancel handler:nil]];
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[alert addAction:[UIAlertAction actionWithTitle:@"View Release"
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style:UIAlertActionStyleDefault handler:^(__unused UIAlertAction *action) {
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[UIApplication.sharedApplication openURL:releaseURL options:@{}
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completionHandler:nil];
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}]];
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gFSPendingRelease = nil;
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[presenter presentViewController:alert animated:YES completion:^{
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[NSUserDefaults.standardUserDefaults setObject:tag
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forKey:kFSLastAlertedTagKey];
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}];
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}
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static void FSScheduleUpdatePresentation(NSUInteger attemptsRemaining)
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{
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if (!gFSPendingRelease || gFSUpdatePresentationScheduled) return;
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gFSUpdatePresentationScheduled = YES;
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC),
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dispatch_get_main_queue(), ^{
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gFSUpdatePresentationScheduled = NO;
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FSPresentPendingUpdate();
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if (gFSPendingRelease && attemptsRemaining > 1)
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FSScheduleUpdatePresentation(attemptsRemaining - 1);
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});
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}
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static void FSHandleReleaseResponse(NSData *data, NSURLResponse *response,
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NSError *error)
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{
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dispatch_async(dispatch_get_main_queue(), ^{
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gFSUpdateCheckInFlight = NO;
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NSInteger statusCode = [response isKindOfClass:NSHTTPURLResponse.class]
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? ((NSHTTPURLResponse *)response).statusCode : 0;
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if (error || statusCode != 200 || data.length == 0) {
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NSLog(@"[UpdateChecker] request failed status=%ld error=%@",
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(long)statusCode, error);
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return;
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}
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NSError *jsonError = nil;
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NSDictionary *payload = [NSJSONSerialization JSONObjectWithData:data
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options:0 error:&jsonError];
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if (![payload isKindOfClass:NSDictionary.class]) {
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NSLog(@"[UpdateChecker] invalid response error=%@", jsonError);
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return;
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}
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NSString *tag = [payload[@"tag_name"] isKindOfClass:NSString.class]
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? payload[@"tag_name"] : nil;
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NSString *releaseURL = [payload[@"html_url"] isKindOfClass:NSString.class]
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? payload[@"html_url"] : nil;
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NSString *current = FSCurrentVersion();
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if (tag == nil || releaseURL == nil) {
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NSLog(@"[UpdateChecker] response omitted release metadata");
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return;
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}
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if (!FSUpdateVersionIsNewer(tag, current)) {
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NSLog(@"[UpdateChecker] current=%@ latest=%@", current, tag);
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return;
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}
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NSString *lastAlerted = [NSUserDefaults.standardUserDefaults
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stringForKey:kFSLastAlertedTagKey];
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if ([lastAlerted isEqualToString:tag]) return;
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if (!FSReleaseURL(releaseURL)) {
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NSLog(@"[UpdateChecker] rejected release URL %@", releaseURL);
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return;
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}
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gFSPendingRelease = @{ @"tag": tag, @"url": releaseURL };
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FSScheduleUpdatePresentation(10);
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});
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}
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static void FSCheckForUpdateIfNeeded(void)
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{
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NSCAssert(NSThread.isMainThread,
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@"Update checks must start on the main thread");
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if (gFSUpdateCheckInFlight) return;
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NSString *current = FSCurrentVersion();
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if (!current.length) {
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NSLog(@"[UpdateChecker] %@ is missing; skipping update check",
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kFSVersionInfoKey);
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return;
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}
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NSUserDefaults *defaults = NSUserDefaults.standardUserDefaults;
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NSDate *lastCheck = [defaults objectForKey:kFSLastCheckDateKey];
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if (![lastCheck isKindOfClass:NSDate.class]) lastCheck = nil;
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NSString *lastVersion = [defaults stringForKey:kFSLastCheckedVersionKey];
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NSTimeInterval elapsed = lastCheck
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? [NSDate.date timeIntervalSinceDate:lastCheck] : kFSUpdateCheckInterval;
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BOOL sameVersion = [lastVersion isEqualToString:current];
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if (sameVersion && elapsed >= 0.0 && elapsed < kFSUpdateCheckInterval)
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return;
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[defaults setObject:NSDate.date forKey:kFSLastCheckDateKey];
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[defaults setObject:current forKey:kFSLastCheckedVersionKey];
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gFSUpdateCheckInFlight = YES;
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NSMutableURLRequest *request = [NSMutableURLRequest
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requestWithURL:[NSURL URLWithString:kFSUpdateAPIURL]
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cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:15.0];
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[request setValue:@"application/vnd.github+json" forHTTPHeaderField:@"Accept"];
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[request setValue:@"2022-11-28"
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forHTTPHeaderField:@"X-GitHub-Api-Version"];
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[request setValue:@"FilzaSlop-UpdateChecker" forHTTPHeaderField:@"User-Agent"];
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NSURLSessionDataTask *task = [NSURLSession.sharedSession
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dataTaskWithRequest:request
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completionHandler:^(NSData *data, NSURLResponse *response,
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NSError *error) {
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FSHandleReleaseResponse(data, response, error);
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}];
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[task resume];
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}
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void FSUpdateCheckerStart(void)
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{
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dispatch_async(dispatch_get_main_queue(), ^{
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if (gFSUpdateCheckerStarted) return;
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gFSUpdateCheckerStarted = YES;
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[NSNotificationCenter.defaultCenter
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addObserverForName:UIApplicationDidBecomeActiveNotification
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object:nil queue:NSOperationQueue.mainQueue
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usingBlock:^(__unused NSNotification *notification) {
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FSScheduleUpdatePresentation(10);
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FSCheckForUpdateIfNeeded();
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}];
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if (UIApplication.sharedApplication.applicationState ==
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UIApplicationStateActive)
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FSCheckForUpdateIfNeeded();
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});
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}
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