public async Task <Result <AuthTokenDTO> > Handle(AuthenticateCommand request, CancellationToken cancellationToken)
{
var user = await _userManager.FindByNameAsync(request.Username);
if (user == null)
{
return(Result.Failure <AuthTokenDTO>("Invalid username or password."));
}
if (request.GrantType.Equals("password"))
{
var isPassowrdValid = await _userManager.CheckPasswordAsync(user, request.Password);
if (!isPassowrdValid)
{
return(Result.Failure <AuthTokenDTO>("Invalid username or password."));
}
var roles = await _userManager.GetRolesAsync(user);
var token = TokenHelper.GenerateToken(user, roles.ToArray());
await _mediator.Publish(new TokenCreatedEvent(user.Id, token), cancellationToken);
return(Result.Ok <AuthTokenDTO>(token));
}
else if (request.GrantType.Equals("refresh_token"))
{
var refreshTokenResult = _refreshTokenRepository.CheckRefreshToken(user.Id, request.RefreshToken);
if (refreshTokenResult.IsFailure)
{
return(Result.Failure <AuthTokenDTO>(refreshTokenResult.Error));
}
var roles = await _userManager.GetRolesAsync(user);
var token = TokenHelper.GenerateToken(user, roles.ToArray());
await _mediator.Publish(new TokenCreatedEvent(user.Id, token, oldToken : request.RefreshToken), cancellationToken);
return(Result.Ok <AuthTokenDTO>(token));
}
else
{
return(Result.Failure <AuthTokenDTO>("Invalid Grant Type."));
}
}