#import <UIKit/UIKit.h>

@interface SimpleClass : NSObject

@property (assign, readwrite) float value;

@end

@implementation SimpleClass

@end

@interface ComplexClass : NSObject

@property (strong, nonatomic) NSString *firstName;
@property (strong, nonatomic) NSString *lastName;
@property (assign, readwrite) float value;
@property (strong, nonatomic) NSArray *arr;

@end

@implementation ComplexClass

@end

@interface TimingViewController : UIViewController

@property (strong, nonatomic) NSMutableArray *simpleArray;
@property (strong, nonatomic) NSMutableArray *complexArray;

@end

@implementation TimingViewController

int numElements = 1000;
int numReps = 50;

- (void)viewDidLoad {
    [super viewDidLoad];
    
	self.view.backgroundColor = [UIColor systemYellowColor];
	
	_simpleArray = [NSMutableArray new];
	_complexArray = [NSMutableArray new];

	srand48(time(0));

	for (int i = 0; i < numElements; i++) {
		
		float r = drand48();
		
		SimpleClass *sc = [SimpleClass new];
		sc.value = r;
		[_simpleArray addObject:sc];
		
		ComplexClass *cc = [ComplexClass new];
		cc.value = r;
		cc.firstName = [NSString stringWithFormat:@"First %i", i];
		cc.lastName = [NSString stringWithFormat:@"Last %i", i];
		
		NSMutableArray *a = [NSMutableArray new];
		for (int j = 0; j < 1000; j++) {
			[a addObject:[NSNumber numberWithInt:j]];
		}
		cc.arr = [a mutableCopy];
		
		[_complexArray addObject:cc];
	}
	
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
	
	double d = 0;
	
	NSLog(@"Sorting %d element array of Simple Objects %d times...", numElements, numReps);
	
	NSMutableArray *a = [NSMutableArray new];
	for (int j = 0; j < numReps; j++) {
		d = [self timingTest:_simpleArray];
		[a addObject:[NSNumber numberWithDouble:d]];
	}

	NSLog(@"Sorting %d element array of Complex Objects %d times...", numElements, numReps);

	NSMutableArray *b = [NSMutableArray new];
	for (int j = 0; j < numReps; j++) {
		d = [self timingTest:_complexArray];
		[b addObject:[NSNumber numberWithDouble:d]];
	}

	NSNumber *aAvg = [a valueForKeyPath:@"@avg.self"];
	NSNumber *bAvg = [b valueForKeyPath:@"@avg.self"];

	NSLog(@"Average Seconds for Simple:  %0.10f", [aAvg doubleValue]);
	NSLog(@"Average Seconds for Complex: %0.10f", [bAvg doubleValue]);

}

- (double)timingTest: (NSMutableArray *)a {
	
	CFTimeInterval startTime;
	CFTimeInterval endTime;

	NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"value" ascending:YES];

	startTime = CACurrentMediaTime();
	NSArray *aa = [a sortedArrayUsingDescriptors:@[sortDescriptor]];
	endTime = CACurrentMediaTime();
	
	return endTime - startTime;
}

@end