//
//  UITapGesture.swift
//  VDS
//
//  Created by Matt Bruce on 8/4/22.
//

import Foundation
import UIKit

extension UITapGestureRecognizer {
    
    /// Determines if the touch event has a action attribute within the range given
    /// - Parameters:
    ///   - label: UILabel in question
    ///   - targetRange: Range to look within
    /// - Returns: Wether the range in the label has an action
    public func didTapActionInLabel(_ label: UILabel, inRange targetRange: NSRange) -> Bool {
        
        guard let attributedText = label.attributedText else { return false }
        
        let layoutManager = NSLayoutManager()
        let textContainer = NSTextContainer(size: label.bounds.size)
        let textStorage = NSTextStorage(attributedString: attributedText)
        layoutManager.addTextContainer(textContainer)
        textStorage.addLayoutManager(layoutManager)

        let location = location(in: label)
        let characterIndex = layoutManager.characterIndex(for: location, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)

        guard let _ = attributedText.attribute(NSAttributedString.Key.action, at: characterIndex, effectiveRange: nil) as? String, characterIndex < attributedText.length else { return false }
        return true
    }
}