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using System.Threading.Tasks;
using Web.Api.Core.Dto;
using Web.Api.Core.Dto.UseCaseRequests;
using Web.Api.Core.Dto.UseCaseResponses;
using Web.Api.Core.Interfaces;
using Web.Api.Core.Interfaces.Gateways.Repositories;
using Web.Api.Core.Interfaces.Services;
using Web.Api.Core.Interfaces.UseCases;
namespace Web.Api.Core.UseCases
{
public sealed class LoginUseCase : ILoginUseCase
{
private readonly IUserRepository _userRepository;
private readonly IJwtFactory _jwtFactory;
private readonly ITokenFactory _tokenFactory;
public LoginUseCase(IUserRepository userRepository, IJwtFactory jwtFactory, ITokenFactory tokenFactory)
{
_userRepository = userRepository;
_jwtFactory = jwtFactory;
_tokenFactory = tokenFactory;
}
public async Task<bool> Handle(LoginRequest message, IOutputPort<LoginResponse> outputPort)
{
if (!string.IsNullOrEmpty(message.UserName) && !string.IsNullOrEmpty(message.Password))
{
// ensure we have a user with the given user name
var user = await _userRepository.FindByName(message.UserName);
if (user != null)
{
// validate password
if (await _userRepository.CheckPassword(user, message.Password))
{
// generate refresh token
var refreshToken = _tokenFactory.GenerateToken();
user.AddRefreshToken(refreshToken, user.Id, message.RemoteIpAddress);
await _userRepository.Update(user);
// generate access token
outputPort.Handle(new LoginResponse(await _jwtFactory.GenerateEncodedToken(user.IdentityId, user.UserName), refreshToken, true));
return true;
}
}
}
outputPort.Handle(new LoginResponse(new[] { new Error("login_failure", "Invalid username or password.") }));
return false;
}
}
}
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