#import <UIKit/UIKit.h>

static inline BOOL firstVersionIsLessThanSecond(NSString * first, NSString * second)
{
  NSArray const * const f = [first componentsSeparatedByString:@"."];
  NSArray const * const s = [second componentsSeparatedByString:@"."];
  NSUInteger iter = 0;
  while (f.count > iter && s.count > iter)
  {
    NSInteger fiv = ((NSString *)f[iter]).integerValue;
    NSInteger siv = ((NSString *)s[iter]).integerValue;

    if (fiv == siv)
      iter++;
    else
      return fiv < siv;
  }
  return f.count < s.count;
}

static inline BOOL isIOSVersionLessThan(NSString * version)
{
  return firstVersionIsLessThanSecond(UIDevice.currentDevice.systemVersion, version);
}

static inline BOOL isIOSVersionLessThan(NSUInteger version)
{
  return isIOSVersionLessThan([NSString stringWithFormat:@"%@", @(version)]);
}

static inline BOOL isInterfaceRightToLeft()
{
  return UIApplication.sharedApplication.userInterfaceLayoutDirection ==
         UIUserInterfaceLayoutDirectionRightToLeft;
}

static inline NSString * formattedSize(uint64_t size)
{
  return
      [NSByteCountFormatter stringFromByteCount:size countStyle:NSByteCountFormatterCountStyleFile];
}

// Use only for screen dimensions CGFloat comparison
static inline BOOL equalScreenDimensions(CGFloat left, CGFloat right)
{
  return fabs(left - right) < 0.5;
}

static inline CGFloat statusBarHeight()
{
  CGSize const statusBarSize = UIApplication.sharedApplication.statusBarFrame.size;
  return MIN(statusBarSize.height, statusBarSize.width);
}

static inline void setStatusBarBackgroundColor(UIColor * color)
{
  UIView * statusBar =
      [UIApplication.sharedApplication valueForKeyPath:@"statusBarWindow.statusBar"];
  if ([statusBar respondsToSelector:@selector(setBackgroundColor:)])
    statusBar.backgroundColor = color;
}