PM-3349 PM-3350 MAUI Migration Initial

src/Core/Pages/CaptchaProtectedViewModel.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Threading.Tasks;
+using Bit.App.Abstractions;
+using Bit.Core.Resources.Localization;
+using Bit.App.Utilities;
+using Bit.Core.Abstractions;
+using Microsoft.Maui.Authentication;
+
+namespace Bit.App.Pages
+{
+    public abstract class CaptchaProtectedViewModel : BaseViewModel
+    {
+        protected abstract II18nService i18nService { get; }
+        protected abstract IEnvironmentService environmentService { get; }
+        protected abstract IDeviceActionService deviceActionService { get; }
+        protected abstract IPlatformUtilsService platformUtilsService { get; }
+        protected string _captchaToken = null;
+
+        protected async Task<bool> HandleCaptchaAsync(string captchaSiteKey, bool needsCaptcha, Func<Task> onSuccess)
+        {
+            if (!needsCaptcha)
+            {
+                _captchaToken = null;
+                return false;
+            }
+
+            if (await HandleCaptchaAsync(captchaSiteKey))
+            {
+                await onSuccess();
+                _captchaToken = null;
+            }
+            return true;
+        }
+
+        protected async Task<bool> HandleCaptchaAsync(string CaptchaSiteKey)
+        {
+            var callbackUri = "bitwarden://captcha-callback";
+            var data = AppHelpers.EncodeDataParameter(new
+            {
+                siteKey = CaptchaSiteKey,
+                locale = i18nService.Culture.TwoLetterISOLanguageName,
+                callbackUri = callbackUri,
+                captchaRequiredText = AppResources.CaptchaRequired,
+            });
+
+            var url = environmentService.GetWebVaultUrl() +
+                      "/captcha-mobile-connector.html?" +
+                      "data=" + data +
+                      "&parent=" + Uri.EscapeDataString(callbackUri) +
+                      "&v=1";
+
+            WebAuthenticatorResult authResult = null;
+            bool cancelled = false;
+            try
+            {
+                // PrefersEphemeralWebBrowserSession should be false to allow access to the hCaptcha accessibility
+                // cookie set in the default browser
+                // https://www.hcaptcha.com/accessibility
+                var options = new WebAuthenticatorOptions
+                {
+                    Url = new Uri(url),
+                    CallbackUrl = new Uri(callbackUri),
+                    PrefersEphemeralWebBrowserSession = false,
+                };
+                authResult = await WebAuthenticator.AuthenticateAsync(options);
+            }
+            catch (TaskCanceledException)
+            {
+                await deviceActionService.HideLoadingAsync();
+                cancelled = true;
+            }
+
+            if (cancelled == false && authResult != null &&
+                authResult.Properties.TryGetValue("token", out _captchaToken))
+            {
+                return true;
+            }
+            else
+            {
+                await platformUtilsService.ShowDialogAsync(AppResources.CaptchaFailed,
+                    AppResources.CaptchaRequired);
+                return false;
+            }
+        }
+    }
+}