[PM-12512] Add Endpoint to allow users to request a new device otp (#5146)

feat(NewDeviceVerification): Added a resend new device OTP endpoint and method for the IUserService as well as wrote test for new methods for the user service.

src/Core/Services/IUserService.cs

@@ -76,7 +76,7 @@ public interface IUserService
     Task SendOTPAsync(User user);
     Task<bool> VerifyOTPAsync(User user, string token);
     Task<bool> VerifySecretAsync(User user, string secret, bool isSettingMFA = false);
-
+    Task ResendNewDeviceVerificationEmail(string email, string secret);
 
     void SetTwoFactorProvider(User user, TwoFactorProviderType type, bool setEnabled = true);
 

src/Core/Services/Implementations/UserService.cs

@@ -1407,7 +1407,7 @@ public class UserService : UserManager<User>, IUserService, IDisposable
 
     public async Task SendOTPAsync(User user)
     {
-        if (user.Email == null)
+        if (string.IsNullOrEmpty(user.Email))
         {
             throw new BadRequestException("No user email.");
         }
@@ -1450,6 +1450,20 @@ public class UserService : UserManager<User>, IUserService, IDisposable
         return isVerified;
     }
 
+    public async Task ResendNewDeviceVerificationEmail(string email, string secret)
+    {
+        var user = await _userRepository.GetByEmailAsync(email);
+        if (user == null)
+        {
+            return;
+        }
+
+        if (await VerifySecretAsync(user, secret))
+        {
+            await SendOTPAsync(user);
+        }
+    }
+
     private async Task SendAppropriateWelcomeEmailAsync(User user, string initiationPath)
     {
         var isFromMarketingWebsite = initiationPath.Contains("Secrets Manager trial");