From e1e41ec1d99d056a062d885b715fc0e8eb48b16c Mon Sep 17 00:00:00 2001
From: Alexande B <abobrikovich@gmail.com>
Date: Wed, 21 Feb 2024 23:57:19 +0100
Subject: [PATCH] feat: HCaptcha.redrawView

---
 Example/HCaptcha/ViewController.swift | 25 +++++++++++++++++
 HCaptcha/Classes/HCaptcha.swift       | 10 +++++++
 README.md                             | 40 +++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)

diff --git a/Example/HCaptcha/ViewController.swift b/Example/HCaptcha/ViewController.swift
index 399cc79..9c117ff 100644
--- a/Example/HCaptcha/ViewController.swift
+++ b/Example/HCaptcha/ViewController.swift
@@ -10,6 +10,7 @@ import HCaptcha
 import RxCocoa
 import RxSwift
 import UIKit
+import WebKit
 
 class ViewController: UIViewController {
     private struct Constants {
@@ -21,6 +22,7 @@ class ViewController: UIViewController {
     private var disposeBag = DisposeBag()
 
     private var locale: Locale?
+    private var challengeShown: Bool = false
 
     /// Don't init SDK to avoid unnecessary API calls and simplify debugging if the application used as a host for tests
     private var unitTesting: Bool {
@@ -90,6 +92,11 @@ class ViewController: UIViewController {
                     print("onEvent error: \(String(describing: error))")
                 }
 
+                if event == .open {
+                    self?.challengeShown = true
+                    self?.hcaptcha.redrawView()
+                }
+
                 let alertController = UIAlertController(title: "On Event",
                                                         message: event.rawValue,
                                                         preferredStyle: .alert)
@@ -131,6 +138,7 @@ class ViewController: UIViewController {
                 self?.view.viewWithTag(Constants.webViewTag)
             }
             .subscribe(onNext: { subview in
+                self.challengeShown = false
                 subview?.removeFromSuperview()
             })
             .disposed(by: disposeBag)
@@ -169,6 +177,10 @@ class ViewController: UIViewController {
         hcaptcha = try! HCaptcha(locale: locale)
 
         hcaptcha.configureWebView { [weak self] webview in
+            if self?.challengeShown == true {
+                self?.moveHCaptchaUp(webview)
+                return
+            }
             webview.frame = self?.view.bounds ?? CGRect.zero
             webview.tag = Constants.webViewTag
 
@@ -187,4 +199,17 @@ class ViewController: UIViewController {
             self?.view.addSubview(label)
         }
     }
+
+    private func moveHCaptchaUp(_ webview: WKWebView) {
+        let padding: CGFloat = 0
+        let windowHeight = view.frame.size.height
+        let targetHeight = (2.0 / 3.0) * windowHeight
+
+        webview.frame = CGRect(
+            x: padding,
+            y: padding,
+            width: view.frame.size.width - 2 * padding,
+            height: targetHeight - 2 * padding
+        )
+    }
 }
diff --git a/HCaptcha/Classes/HCaptcha.swift b/HCaptcha/Classes/HCaptcha.swift
index 8d4b106..7921524 100644
--- a/HCaptcha/Classes/HCaptcha.swift
+++ b/HCaptcha/Classes/HCaptcha.swift
@@ -206,6 +206,16 @@ public class HCaptcha: NSObject {
         manager.onDidFinishLoading = closure
     }
 
+    /**
+     Request for a call to the `configureWebView` closure.
+
+     This may be useful if you need to modify the layout of hCaptcha.
+    */
+    @objc
+    public func redrawView() {
+        manager.configureWebView?(manager.webView)
+    }
+
     // MARK: - Development
 
 #if DEBUG
diff --git a/README.md b/README.md
index cebec1e..f078032 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@
     + [Using landscape instead of portrait orientation](#using-landscape-instead-of-portrait-orientation)
     + [SDK Events](#sdk-events)
     + [Disable new token fetch on expiry](#disable-new-token-fetch-on-expiry)
+    + [Change hCaptch frame](#change-hcaptcha-frame)
   * [Known issues](#known-issues)
   * [License](#license)
   * [Troubleshooting](#troubleshooting)
@@ -311,6 +312,45 @@ hcaptcha.validate(on: view, resetOnError: false) { result in
    }
 ```
 
+### Change hCaptch frame
+
+In case if you need to change hCaptcha layout for example after visual challenge appear you can use approach above
+
+``` swift
+let hcaptcha = try? HCaptcha(...)
+var visualChallengeShown = false
+...
+hcaptcha?.configureWebView { [weak self] webview in
+    webview.tag = "hCaptchaViewTag"
+    if visualChallengeShown {
+        let padding = 10
+        webview.frame = CGRect(
+            x: padding,
+            y: padding,
+            width: view.frame.size.width - 2 * padding,
+            height: targetHeight - 2 * padding
+        )
+    } else {
+        webview.frame = self?.view.bounds ?? CGRect.zero
+    }
+}
+...
+hcaptcha.onEvent { (event, data) in
+    if event == .open {
+        visualChallengeShown = true
+        hcaptcha.redrawView*()
+    } else if event == .error {
+        let error = data as? HCaptchaError
+        print("onEvent error: \(String(describing: error))")
+        ...
+    }
+}
+...
+hcaptcha.validate(on: view, resetOnError: false) { result in
+    visualChallengeShown = false
+}
+```
+
 ### SwiftUI Example
 
 `HCaptcha` was originally designed to be used with UIKit. But you can easily use it with `SwiftUI` as well. Check out the [SwiftUI Example](./Example/SwiftUI)