transmission/macosx/BlocklistScheduler.mm

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// This file Copyright © 2008-2022 Transmission authors and contributors.
// It may be used under the MIT (SPDX: MIT) license.
// License text can be found in the licenses/ folder.
#import "BlocklistScheduler.h"
#import "BlocklistDownloader.h"
//thirty second delay before running after option is changed
#define SMALL_DELAY 30
//update one week after previous update
#define FULL_WAIT (60 * 60 * 24 * 7)
@interface BlocklistScheduler ()
@property(nonatomic) NSTimer* fTimer;
- (void)runUpdater;
@end
@implementation BlocklistScheduler
BlocklistScheduler* fScheduler = nil;
+ (BlocklistScheduler*)scheduler
{
if (!fScheduler)
{
fScheduler = [[BlocklistScheduler alloc] init];
}
return fScheduler;
}
- (void)updateSchedule
{
if (BlocklistDownloader.isRunning)
return;
[self cancelSchedule];
NSString* blocklistURL;
if (![NSUserDefaults.standardUserDefaults boolForKey:@"BlocklistNew"] ||
!((blocklistURL = [NSUserDefaults.standardUserDefaults stringForKey:@"BlocklistURL"]) && ![blocklistURL isEqualToString:@""]) ||
![NSUserDefaults.standardUserDefaults boolForKey:@"BlocklistAutoUpdate"])
{
return;
}
NSDate* lastUpdateDate = [NSUserDefaults.standardUserDefaults objectForKey:@"BlocklistNewLastUpdate"];
if (lastUpdateDate)
{
lastUpdateDate = [lastUpdateDate dateByAddingTimeInterval:FULL_WAIT];
}
NSDate* closeDate = [NSDate dateWithTimeIntervalSinceNow:SMALL_DELAY];
NSDate* useDate = lastUpdateDate ? [lastUpdateDate laterDate:closeDate] : closeDate;
self.fTimer = [[NSTimer alloc] initWithFireDate:useDate interval:0 target:self selector:@selector(runUpdater) userInfo:nil
repeats:NO];
//current run loop usually means a second update won't work
NSRunLoop* loop = NSRunLoop.mainRunLoop;
[loop addTimer:self.fTimer forMode:NSDefaultRunLoopMode];
[loop addTimer:self.fTimer forMode:NSModalPanelRunLoopMode];
[loop addTimer:self.fTimer forMode:NSEventTrackingRunLoopMode];
}
- (void)cancelSchedule
{
[self.fTimer invalidate];
self.fTimer = nil;
}
#pragma mark - Private
- (void)runUpdater
{
self.fTimer = nil;
[BlocklistDownloader downloader];
}
@end