JwtService - Create Refresh Token

1.Post.RefreshToken.JwtService.cs

public class JwtService : IJwtService
{
	private readonly JwtSettings _settings;

	public JwtService(JwtSettings settings)
	{
		_settings = settings;
	}

	public JsonWebToken CreateJsonWebToken(User user)
	{
		// ... código omitido

		return new JsonWebToken
		{
			AccessToken = accessToken,
			RefreshToken = CreateRefreshToken(user.Email),
			ExpiresIn = (long)TimeSpan.FromMinutes(_settings.ValidForMinutes).TotalSeconds
		};
	}

	private RefreshToken CreateRefreshToken(string username)
	{
		var refreshToken = new RefreshToken
		{
			Username = username,
			ExpirationDate = _settings.RefreshTokenExpiration
		};

		string token;
		var randomNumber = new byte[32];

		using (var rng = RandomNumberGenerator.Create())
		{
			rng.GetBytes(randomNumber);
			token = Convert.ToBase64String(randomNumber);
		}

		refreshToken.Token = token.Replace("+", string.Empty)
			.Replace("=", string.Empty)
			.Replace("/", string.Empty);

		return refreshToken;
	}
	
	// ... código omitido
}