Add merchant description to CouponBarcodeVC

@@ -10,7 +10,7 @@ import UIKit
 import AVFoundation
 // import SwiftEventBus
 
-@objc public class CouponBarcodeViewController: UIViewController {
+@objc public class CouponBarcodeViewController: UIViewController, UITextViewDelegate {
     @IBOutlet weak var mainView: UIView!
     @IBOutlet weak var backgroundImage: UIImageView!
     @IBOutlet weak var scrollView: UIScrollView!
@@ -19,6 +19,9 @@ import AVFoundation
     @IBOutlet weak var couponImageHeight: NSLayoutConstraint!
     @IBOutlet weak var nameLabel: UILabel!
     @IBOutlet weak var discriptionLabel: UILabel!
+    @IBOutlet weak var merchantDescrTextView: UnselectableTappableTextView!
+    @IBOutlet weak var merchantDescrTextViewHeight: NSLayoutConstraint!
+    @IBOutlet weak var merchantDescrTextViewTopSpace: NSLayoutConstraint!
     @IBOutlet weak var couponView: UIView!
     @IBOutlet weak var couponNumberLabel: CopyableLabel!
     @IBOutlet weak var barcodeImage: UIImageView!
@@ -29,7 +32,7 @@ import AVFoundation
     @IBOutlet weak var expirationLabel: UILabel!
     @IBOutlet weak var redeemButton: UIButton!
     @IBOutlet weak var termsButton: UIButton!
-    @IBOutlet weak var termsTextView: UITextView!
+    @IBOutlet weak var termsTextView: UnselectableTappableTextView!
     @IBOutlet weak var termsTextViewHeight: NSLayoutConstraint!
     @IBOutlet weak var borderViewHeight: NSLayoutConstraint!
     @IBOutlet weak var borderView2Height: NSLayoutConstraint!
@@ -60,6 +63,8 @@ import AVFoundation
         super.viewDidLoad()
         
         self.hidesBottomBarWhenPushed = true
+        merchantDescrTextView.delegate = self
+        termsTextView.delegate = self
 
         // Do any additional setup after loading the view.
         setBackButton()
@@ -101,6 +106,38 @@ import AVFoundation
         nameLabel.text = couponSetData?.name ?? ""
         discriptionLabel.text = couponSetData?.short_description ?? ""
         
+        merchantDescrTextView.text = ""
+        merchantDescrTextViewTopSpace.constant = CGFloat(0)
+        merchantDescrTextViewHeight.constant = CGFloat(0)
+        merchantDescrTextView.isHidden = true
+        
+        let merchantList:Array<swiftApi.MerchantModel> = swiftApi().getMerchantList()
+        
+        for merchant in merchantList {
+            if (merchant._uuid == couponSetData?.merchant_uuid) {
+                let htmlMerchDescrText = merchant._body
+                
+                if (htmlMerchDescrText != "") {
+                    merchantDescrTextView.attributedText = htmlMerchDescrText.htmlToAttributedString
+                    merchantDescrTextView.font = UIFont(name: "PFSquareSansPro-Regular", size: 17)
+                    merchantDescrTextView.textColor = UIColor(red: 0.25, green: 0.33, blue: 0.39, alpha: 1.00)
+                    merchantDescrTextView.textAlignment = .center
+                    merchantDescrTextView.isScrollEnabled = false
+                    merchantDescrTextView.isUserInteractionEnabled = true
+                    merchantDescrTextView.isEditable = false
+                    merchantDescrTextView.isSelectable = true
+                    merchantDescrTextView.dataDetectorTypes = [.link]
+                    
+                    merchantDescrTextView.isHidden = false
+                    merchantDescrTextViewTopSpace.constant = CGFloat(15)
+                    let targetSize = CGSize(width: merchantDescrTextView.frame.width, height: CGFloat(MAXFLOAT))
+                    merchantDescrTextViewHeight.constant = merchantDescrTextView.sizeThatFits(targetSize).height
+                }
+                
+                break;
+            }
+        }
+        
         couponView.layer.cornerRadius = 8
         couponNumberLabel.text = coupon?.coupon ?? ""
         couponView.frame = CGRect(x: 0.0, y: 0.0, width: couponView.intrinsicContentSize.width, height: 55)
@@ -246,6 +283,11 @@ import AVFoundation
         termsTextView.textAlignment = .center
         termsTextView.isScrollEnabled = false
         
+        termsTextView.isUserInteractionEnabled = true
+        termsTextView.isEditable = false
+        termsTextView.isSelectable = true
+        termsTextView.dataDetectorTypes = [.link]
+        
         // Uncomment if Barcode Section is active again
 //        toggleTerms()
         toggleBarcode()
@@ -265,6 +307,14 @@ import AVFoundation
         
     }
     
+    public func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
+        UIApplication.shared.open(URL)
+
+        // Disable `.preview` by 3D Touch and other interactions
+        return false
+    }
+
+    
     // MARK: - Functions
     func toggleTerms() {
         if (termsVisible) {

@@ -490,3 +490,35 @@ extension UINavigationController {
         return nil
     }
 }
+
+/// Class to allow links but no selection.
+/// Basically, it disables unwanted UIGestureRecognizer from UITextView.
+class UnselectableTappableTextView: UITextView {
+
+    // required to prevent blue background selection from any situation
+    override var selectedTextRange: UITextRange? {
+        get { return nil }
+        set {}
+    }
+
+    override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
+        if gestureRecognizer is UIPanGestureRecognizer {
+            // required for compatibility with isScrollEnabled
+            return super.gestureRecognizerShouldBegin(gestureRecognizer)
+        }
+        if let tapGestureRecognizer = gestureRecognizer as? UITapGestureRecognizer,
+            tapGestureRecognizer.numberOfTapsRequired == 1 {
+            // required for compatibility with links
+            return super.gestureRecognizerShouldBegin(gestureRecognizer)
+        }
+        // allowing smallDelayRecognizer for links
+        if let longPressGestureRecognizer = gestureRecognizer as? UILongPressGestureRecognizer,
+            // comparison value is used to distinguish between 0.12 (smallDelayRecognizer) and 0.5 (textSelectionForce and textLoupe)
+            longPressGestureRecognizer.minimumPressDuration < 0.325 {
+            return super.gestureRecognizerShouldBegin(gestureRecognizer)
+        }
+        // preventing selection from loupe/magnifier (_UITextSelectionForceGesture), multi tap, tap and a half, etc.
+        gestureRecognizer.isEnabled = false
+        return false
+    }
+}