Added validation and fixed errors

SchengenVisaApi/ApplicationLayer/Services/Users/IUsersService.cs

@@ -0,0 +1,23 @@
+using ApplicationLayer.Services.Users.Requests;
+using Domains.Users;
+
+namespace ApplicationLayer.Services.Users
+{
+    /// user accounts service
+    public interface IUsersService
+    {
+        /// Returns all user accounts with role of approving authority
+        /// <param name="cancellationToken">Cancellation token</param>
+        Task<List<User>> GetAuthoritiesAccountsAsync(CancellationToken cancellationToken);
+
+        /// Changes authentication data for an account
+        /// <param name="request"> Request object with identifier of user and new authentication data</param>
+        /// <param name="cancellationToken">Cancellation token</param>
+        Task ChangeAccountAuthDataAsync(ChangeUserAuthDataRequest request, CancellationToken cancellationToken);
+
+        /// Removes user account
+        /// <param name="userId">Identifier of account</param>
+        /// <param name="cancellationToken">Cancellation token</param>
+        Task RemoveUserAccount(Guid userId, CancellationToken cancellationToken);
+    }
+}

SchengenVisaApi/ApplicationLayer/Services/Users/Requests/ChangeUserAuthDataRequest.cs

@@ -0,0 +1,6 @@
+using ApplicationLayer.Services.AuthServices.Common;
+
+namespace ApplicationLayer.Services.Users.Requests
+{
+    public record ChangeUserAuthDataRequest(Guid UserId, AuthData NewAuthData);
+}

SchengenVisaApi/ApplicationLayer/Services/Users/UsersService.cs

@@ -0,0 +1,34 @@
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.AuthServices.NeededServices;
+using ApplicationLayer.Services.Users.Requests;
+using Domains.Users;
+
+namespace ApplicationLayer.Services.Users
+{
+    public class UsersService(IUsersRepository users, IUnitOfWork unitOfWork) : IUsersService
+    {
+        async Task<List<User>> IUsersService.GetAuthoritiesAccountsAsync(CancellationToken cancellationToken)
+        {
+            return await users.GetAllOfRoleAsync(Role.ApprovingAuthority, cancellationToken);
+        }
+
+        async Task IUsersService.ChangeAccountAuthDataAsync(ChangeUserAuthDataRequest request, CancellationToken cancellationToken)
+        {
+            var user = await users.GetByIdAsync(request.UserId, cancellationToken);
+
+            user.Email = request.NewAuthData.Email;
+            user.Password = request.NewAuthData.Password;
+            await users.UpdateAsync(user, cancellationToken);
+
+            await unitOfWork.SaveAsync(cancellationToken);
+        }
+
+        async Task IUsersService.RemoveUserAccount(Guid userId, CancellationToken cancellationToken)
+        {
+            var user = await users.GetByIdAsync(userId, cancellationToken);
+            users.Remove(user);
+
+            await unitOfWork.SaveAsync(cancellationToken);
+        }
+    }
+}