UILabel Attribute Text Gesture

let underlineAttriString = NSMutableAttributedString(string: text)
let range1 = (text as NSString).range(of: i18n("AgreementTerms"))
underlineAttriString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: range1)
let range2 = (text as NSString).range(of: i18n("AgreementPrivacy"))
underlineAttriString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: range2)
self.agreeLabel.attributedText = underlineAttriString

@IBAction func tapLabelDetect(_ gesture: UITapGestureRecognizer) {
    let text = self.agreeLabel.text ?? ""
    let termsRange = (text as NSString).range(of: i18n("AgreementTerms"))
    let privacyRange = (text as NSString).range(of: i18n("AgreementPrivacy"))

    if gesture.didTapAttributeTextInLabel(self.agreeLabel, inRange: termsRange) {
      print("tap terms")
    } else if gesture.didTapAttributeTextInLabel(self.agreeLabel, inRange: privacyRange) {
      print("tap privacy")
    } else {

    }
}

extension UITapGestureRecognizer {

    func didTapAttributeTextInLabel(_ label: UILabel, inRange targetRange: NSRange) -> Bool {
        let layoutManager = NSLayoutManager()
        let textContainer = NSTextContainer(size: .zero)
        let textStorage = NSTextStorage(attributedString: label.attributedText ?? NSAttributedString(string: ""))

        layoutManager.addTextContainer(textContainer)
        textStorage.addLayoutManager(layoutManager)

        textContainer.lineFragmentPadding = 0.0
        textContainer.lineBreakMode = label.lineBreakMode
        textContainer.maximumNumberOfLines = label.numberOfLines
        let labelSize = label.bounds.size
        textContainer.size = labelSize

        let locattionOfTouchInLabel = self.location(in: label)
        let textBoundingBox = layoutManager.usedRect(for: textContainer)
        let textContainerOffset = CGPoint(x: (labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x,
                                          y: (labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)
        let locationOfTouchInTextContainer = CGPoint(x: locattionOfTouchInLabel.x - textContainerOffset.x,
                                                     y: locattionOfTouchInLabel.y - textContainerOffset.y)
        let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInTextContainer,
                                                            in: textContainer,
                                                            fractionOfDistanceBetweenInsertionPoints: nil)
        return NSLocationInRange(indexOfCharacter, targetRange)
    }

}