NSApplication Open at Login extension

NSApplication+OpeanAtLogin.m

@implementation NSApplication (OpenAtLogin)

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"

- (BOOL)openAtLogin
{
    LSSharedFileListItemRef loginItem = [self loginItem];
    BOOL result = loginItem ? YES : NO;

    if (loginItem) {
        CFRelease(loginItem);
    }

    return result;
}

- (void)setOpenAtLogin:(BOOL)openAtLogin
{
    if (openAtLogin == self.openAtLogin) {
        return;
    }

    LSSharedFileListRef loginItemsRef = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);

    if (openAtLogin) {
        CFURLRef appUrl = (__bridge CFURLRef)[[NSBundle mainBundle] bundleURL];
        LSSharedFileListItemRef itemRef = LSSharedFileListInsertItemURL(loginItemsRef, kLSSharedFileListItemLast, NULL, NULL, appUrl, NULL, NULL);
        if (itemRef) {
            CFRelease(itemRef);
        }
    } else {
        LSSharedFileListItemRef loginItem = [self loginItem];
        LSSharedFileListItemRemove(loginItemsRef, loginItem);
        if (loginItem) {
            CFRelease(loginItem);
        }
    }

    if (loginItemsRef) {
        CFRelease(loginItemsRef);
    }
}

- (LSSharedFileListItemRef)loginItem
{
    LSSharedFileListRef loginItemsRef = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);

    if (!loginItemsRef) {
        return NULL;
    }

    NSArray *loginItems = CFBridgingRelease(LSSharedFileListCopySnapshot(loginItemsRef, nil));

    LSSharedFileListItemRef result = NULL;

    for (id item in loginItems) {
        LSSharedFileListItemRef itemRef = (__bridge LSSharedFileListItemRef)item;
        CFURLRef itemURLRef;

        if (LSSharedFileListItemResolve(itemRef, 0, &itemURLRef, NULL) == noErr) {
            NSURL *itemURL = (__bridge NSURL *)itemURLRef;

            if ([itemURL isEqual:NSBundle.mainBundle.bundleURL]) {
                result = itemRef;
                break;
            }
        }
    }

    if (result) {
        CFRetain(result);
    }

    CFRelease(loginItemsRef);

    return result;
}

#pragma clang diagnostic pop

@end