time-falls-between-two-dates

time-falls-between-two-dates.m

- (BOOL)isTimeFallsBetweenTwoDates:(NSDate*)start another:(NSDate*)end{
    NSCalendar *gregorian = [[NSCalendar alloc]
                             initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    NSDateComponents *openingTime = [gregorian components:(NSCalendarUnitHour |
                           NSCalendarUnitMinute) fromDate:start];
    
    NSDateComponents *closingTime = [gregorian components:(NSCalendarUnitHour |
                                                           NSCalendarUnitMinute) fromDate:end];
    
    NSDate *now = [NSDate date];
    
    NSDateComponents *currentTime = [[NSCalendar currentCalendar] components:NSCalendarUnitHour|NSCalendarUnitMinute|NSCalendarUnitSecond
                                                                    fromDate:now];
    
    NSMutableArray *times = [@[openingTime, closingTime, currentTime] mutableCopy];
    [times sortUsingComparator:^NSComparisonResult(NSDateComponents *t1, NSDateComponents *t2) {
        if (t1.hour > t2.hour) {
            return NSOrderedDescending;
        }
        
        if (t1.hour < t2.hour) {
            return NSOrderedAscending;
        }
        // hour is the same
        if (t1.minute > t2.minute) {
            return NSOrderedDescending;
        }
        
        if (t1.minute < t2.minute) {
            return NSOrderedAscending;
        }
        // hour and minute are the same
        if (t1.second > t2.second) {
            return NSOrderedDescending;
        }
        
        if (t1.second < t2.second) {
            return NSOrderedAscending;
        }
        return NSOrderedSame;
        
    }];
    
    if ([times indexOfObject:currentTime] == 1) {
        NSLog(@"We are Open!");
        return  TRUE;
    } else {
        NSLog(@"Sorry, we are closed!");
        return FALSE;
    }
}