Drawing Text over NSImage

I have the following code to draw a text over an NSImage.

But the resulting image is getting cropped at the corner and only the corner portion is displayed.

What i'm i doing wrong? Please advice

funcdrawText(image :NSImage) ->NSImage
{
    let text = "sample text"
    let font = NSFont.boldSystemFont(ofSize: 18)
    let imageRect = CGRect(x: 0, y: 0, width: image.size.width, height: image.size.height)
    let textRect = CGRect(x: 5, y: 5, width: image.size.width - 5, height: image.size.height - 5)
    let textStyle = NSMutableParagraphStyle.default().mutableCopy() as! NSMutableParagraphStyle
    let textFontAttributes = [
        NSFontAttributeName: font,
        NSForegroundColorAttributeName: NSColor.white,
        NSParagraphStyleAttributeName: textStyle
    ]
    let im:NSImage = NSImage(size: image.size)
    let rep:NSBitmapImageRep = NSBitmapImageRep(bitmapDataPlanes: nil, pixelsWide: Int(image.size.width), pixelsHigh: Int(image.size.height), bitsPerSample: 8, samplesPerPixel: 4, hasAlpha: true, isPlanar: false, colorSpaceName: NSCalibratedRGBColorSpace, bytesPerRow: 0, bitsPerPixel: 0)!
    im.addRepresentation(rep)
    im.lockFocus()
    image.draw(in: imageRect)
    text.draw(in: textRect, withAttributes: textFontAttributes)
    im.unlockFocus()
    return im
}