Add Show CVV view implementation on ios

Author: thangphuocnguyen

ios/Classes/FlutterShowCVVNumberView/FlutterShowCVVNumberView.swift

@@ -0,0 +1,98 @@
+//
+//  FlutterShowCVVNumberView.swift
+//  Runner
+//
+
+import Foundation
+import Flutter
+import UIKit
+import VGSShowSDK
+
+/// FlutterPlatformView wrapper for VGSShowCVVNumberView.
+class FlutterShowCVVNumberView: NSObject, FlutterPlatformView {
+    
+    // MARK: - Vars
+    
+    var vgsShowCVVNumber = VGSShow(id: "tntazhyknp1", environment: .sandbox)
+
+    let showCVVNumberView: ShowCVVNumberView
+    let messenger: FlutterBinaryMessenger
+    let channel: FlutterMethodChannel
+    let viewId: Int64
+    
+    // MARK: - Initialization
+    
+    init(messenger: FlutterBinaryMessenger,
+         frame: CGRect,
+         viewId: Int64,
+         args: Any?) {
+        
+        self.messenger = messenger
+        self.viewId = viewId
+        self.showCVVNumberView = ShowCVVNumberView()
+        
+        channel = FlutterMethodChannel(name: "card-show-cvv-view/\(viewId)", binaryMessenger: messenger)
+        
+        super.init()
+        self.showCVVNumberView.subscribeViewsToShow(self.vgsShowCVVNumber)
+        
+        channel.setMethodCallHandler({ (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
+            switch call.method {
+            case "revealCVV":
+                self.revealCVV(with: call, result: result)
+                break
+            default:
+                result(FlutterMethodNotImplemented)
+            }
+        })
+    }
+    
+    // MARK: - FlutterPlatformView
+    
+    public func view() -> UIView {
+        return self.showCVVNumberView
+    }
+    
+    // MARK: - Helpers
+    
+    private func revealCVV(with flutterMethodCall: FlutterMethodCall, result: @escaping FlutterResult) {
+        var errorInfo: [String : Any] = [:]
+		guard let args = flutterMethodCall.arguments as? [Any],
+					let vaultId = args.first as? String, 
+                    let sandbox = args[1] as? Bool,
+                    let customerToken = args[2] as? String,
+                    let cardId = args[3] as? String
+		else {
+			errorInfo["show_error_code"] = 999
+			errorInfo["show_error_message"] = "No payload to reveal. Collect some data first!"
+			
+            result(errorInfo)
+			return
+		}
+        self.vgsShowCVVNumber = VGSShow(id: vaultId, environment: sandbox ?  .sandbox: .live)
+        self.showCVVNumberView.subscribeViewsToShow(self.vgsShowCVVNumber)
+        
+        self.vgsShowCVVNumber.customHeaders = [
+            "Authorization": "Bearer " + customerToken,
+            "htmlWrapper": "text",
+            "jsonPathSelector": "data.attributes.cvv2"
+        ]
+        
+        self.vgsShowCVVNumber.request(path: "/cards/\(cardId)/secure-data/cvv2", method: .get) { (response) in
+            switch response {
+            case .success(let code):
+                var successInfo: [String : Any] = [:]
+                successInfo["show_status_code"] = code
+                result(successInfo)
+            case .failure(let code, let error):
+                errorInfo["show_error_code"] = code
+                if let message = error?.localizedDescription {
+                    errorInfo["show_error_message"] = message
+                }
+                result(errorInfo)
+            }
+        }
+        
+    }
+    
+}

ios/Classes/FlutterShowCVVNumberView/FlutterShowCVVNumberViewFactory.swift

@@ -0,0 +1,35 @@
+//
+//  FlutterShowCVVNumberViewFactory.swift
+//  Runner
+//
+
+import Foundation
+import Flutter
+import UIKit
+
+/// Flutter View factory for VGSShow wrapper.
+class FlutterShowCVVNumberViewFactory: NSObject, FlutterPlatformViewFactory {
+    
+    // MARK: - Private vars
+    
+    private var messenger: FlutterBinaryMessenger
+    
+    // MARK: - Initialization
+    
+    init(messenger: FlutterBinaryMessenger) {
+        self.messenger = messenger
+    }
+    
+    // MARK: - Public
+    
+    public func create(withFrame frame: CGRect,
+                       viewIdentifier viewId: Int64,
+                       arguments args: Any?) -> FlutterPlatformView {
+        return FlutterShowCVVNumberView(messenger: messenger,
+                               frame: frame, viewId: viewId,
+                               args: args)
+    }
+    public func createArgsCodec() -> FlutterMessageCodec & NSObjectProtocol {
+        return FlutterStandardMessageCodec.sharedInstance()
+    }
+}

ios/Classes/FlutterShowCVVNumberView/FlutterShowCVVNumberViewPlugin.swift

@@ -0,0 +1,15 @@
+//
+//  FlutterShowCVVNumberViewPlugin.swift
+//  Runner
+//
+
+import Foundation
+import Flutter
+
+/// Flutter plugin for bridging VGSShow.
+public class FlutterShowCVVNumberViewPlugin {
+    class func register(with registrar: FlutterPluginRegistrar) {
+        let viewFactory = FlutterShowCVVNumberViewFactory(messenger: registrar.messenger())
+        registrar.register(viewFactory, withId: "card-show-cvv-view")
+    }
+}

ios/Classes/FlutterShowCVVNumberView/ShowCVVNumberView.swift

@@ -0,0 +1,73 @@
+//
+//  ShowCVVNumberView.swift
+//  Runner
+//
+
+import Foundation
+import UIKit
+import VGSShowSDK
+
+/// Native UIView subclass, holds VGSLabels.
+class ShowCVVNumberView: UIView {
+    
+    // MARK: - Vars
+    
+    private lazy var stackView: UIStackView = {
+        let stackView = UIStackView()
+        stackView.translatesAutoresizingMaskIntoConstraints = false
+        stackView.axis = .vertical
+        
+        stackView.layoutMargins = UIEdgeInsets(top: 8, left: 8, bottom: 8, right: 8)
+        stackView.distribution = .fill
+        stackView.spacing = 16
+        return stackView
+    }()
+    
+    private lazy var cvvNumberVGSLabel: VGSLabel = {
+        let label = ShowCVVNumberView.provideStylesVGSLabel()
+        
+        label.placeholder = "***"
+        label.contentPath = "data.attributes.cvv2"
+        
+        return label
+    }()
+    
+    // MARK: - Initialization
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        addSubview(stackView)
+        
+        stackView.addArrangedSubview(cvvNumberVGSLabel)
+        
+        cvvNumberVGSLabel.heightAnchor.constraint(equalToConstant: 60).isActive = true
+        cvvNumberVGSLabel.widthAnchor.constraint(equalToConstant: 150).isActive = true
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    // MARK: - Public
+    
+    func subscribeViewsToShow(_ vgsShow: VGSShow) {
+        vgsShow.subscribe(cvvNumberVGSLabel)
+    }
+    
+    // MARK: - Private
+    
+    static private func provideStylesVGSLabel() -> VGSLabel {
+        let label = VGSLabel()
+        label.translatesAutoresizingMaskIntoConstraints = true
+        label.font = UIFont.systemFont(ofSize: 14)
+        label.textColor = UIColor(red: 0.05, green: 0.11, blue: 0.26, alpha: 1.00)
+        label.placeholderStyle.font = UIFont.systemFont(ofSize: 14)
+        label.placeholderStyle.color = .black
+        label.placeholderStyle.textAlignment = .right
+        label.textAlignment = .right
+        label.borderColor = UIColor.clear
+        
+        return label
+    }
+}