create desktop alias to current macOS app

AddAliasToDesktopUtility

#import <Cocoa/Cocoa.h>

@interface AddAliasToDesktopUtility : NSObject {

}
    
- (BOOL) addAliasNow;

@end

@implementation AddAliasToDesktopUtility

- (BOOL) addAliasNow
{
    NSArray *arr = [[NSFileManager defaultManager] URLsForDirectory: NSDesktopDirectory inDomains: NSUserDomainMask];
    NSURL *desktopUrl = [arr firstObject];
    NSURL *originalUrl = [[NSBundle mainBundle] bundleURL];
    NSURL *aliasUrl = [desktopUrl URLByAppendingPathComponent:[originalUrl lastPathComponent]];
    
    NSData *bookmarkData = [originalUrl bookmarkDataWithOptions: NSURLBookmarkCreationSuitableForBookmarkFile includingResourceValuesForKeys:nil relativeToURL:nil error:NULL];
    
    NSError *err;
    
    if(bookmarkData != nil) {
        BOOL success = [NSURL writeBookmarkData:bookmarkData toURL:aliasUrl options:NSURLBookmarkCreationSuitableForBookmarkFile error:&err];
        if(NO == success) {
            //error
            NSLog(@"error is %@", [err localizedDescription]);
            return FALSE;
        }
    }
    return TRUE;
}

@end