using OtpNet;

namespace EnvelopeGenerator.Application.Contracts.Services;

/// <summary>
/// 
/// </summary>
public interface IAuthenticator
{
    /// <summary>
    /// 
    /// </summary>
    /// <param name="length"></param>
    /// <returns></returns>
    string GenerateCode(int length);

    /// <summary>
    /// 
    /// </summary>
    /// <param name="length"></param>
    /// <returns></returns>
    string GenerateTotpSecretKey(int? length = null);

    /// <summary>
    /// 
    /// </summary>
    /// <param name="userEmail"></param>
    /// <param name="secretKey"></param>
    /// <param name="issuer"></param>
    /// <param name="totpUrlFormat"></param>
    /// <param name="pixelsPerModule"></param>
    /// <returns></returns>
    byte[] GenerateTotpQrCode(string userEmail, string secretKey, string? issuer = null, string? totpUrlFormat = null, int? pixelsPerModule = null);

    /// <summary>
    /// 
    /// </summary>
    /// <param name="userEmail"></param>
    /// <param name="length"></param>
    /// <param name="issuer"></param>
    /// <param name="totpUrlFormat"></param>
    /// <param name="pixelsPerModule"></param>
    /// <returns></returns>
    byte[] GenerateTotpQrCode(string userEmail, int? length = null, string? issuer = null, string? totpUrlFormat = null, int? pixelsPerModule = null);

    /// <summary>
    /// 
    /// </summary>
    /// <param name="secretKey"></param>
    /// <param name="step"></param>
    /// <returns></returns>
    string GenerateTotp(string secretKey, int step = 30);

    /// <summary>
    /// 
    /// </summary>
    /// <param name="totpCode"></param>
    /// <param name="secretKey"></param>
    /// <param name="step"></param>
    /// <param name="window"></param>
    /// <returns></returns>
    bool VerifyTotp(string totpCode, string secretKey, int step = 30, VerificationWindow? window = null);
}