/// <inheritdoc cref="IUserRepository{T}.RefreshToken"/>
/// <exception cref="ArgumentNullException">if email claim is null.</exception>
/// <exception cref="SecurityException">if jwt is null or empty</exception>
public async Task <IUserActionResult> RefreshToken(string jwt, string refreshToken)
{
//get the principal
var principal = _jwtHandler.GetPrincipalFromExpiredToken(jwt);
if (principal == null)
{
return(_defaultTokenRefreshErrors);
}
//check if the email in the claim is null, if it is an error occurred.
var email = principal.FindFirstValue(ClaimTypes.Email);
if (email == null)
{
throw new NullReferenceException("Email was null");
}
//find the user by email and their refresh tokens
var user = await FindByEmailIncludingRefreshTokens(email);
var storedRefreshToken = user?.RefreshTokens.FirstOrDefault(c => c.Token == refreshToken);
//if there is no valid RefreshToken return
if (storedRefreshToken == null || storedRefreshToken.IsExpired())
{
return(_defaultTokenRefreshErrors);
}
var newJwt = _jwtHandler.Generate(DefaultJwtHandler.GetDefaultClaims(user.FirstName, user.Email));
var newRefreshToken = _refreshTokenGenerator.Generate();
user.RefreshTokens.Remove(storedRefreshToken);
user.RefreshTokens.Add(newRefreshToken);
await _userManager.UpdateAsync(user);
return(new DefaultUserActionResultBuilder()
.Success()
.WithJwt(newJwt)
.WithRefreshToken(newRefreshToken.Token)
.Build());
}