using Nini.Config;
using System.Net;
using System.DirectoryServices.Protocols;

namespace LdapLoginLib.Data
{
    internal class LdapConfig
    {
        // DN Config (route)
        private static string? UserDn { get; set; } = null;
        private static string? AdminDn { get; set; } = null;

        //Server Config
        private static string? ServerIP { get; set; } = null;
        private static int? ServerPort { get; set; } = null;

        // Admin Config
        private static string? AdminUser { get; set; } = null;
        private static string? AdminPassword { get; set; } = null;


        static LdapConfig()
        {
            //string? mode = Environment.GetEnvironmentVariable("Mode");
            ReadCredentials();
        }

        private static void ReadCredentials()
        {
            try
            {
                var filePath = Path.Combine("C:\\Users\\Administrator", ".hims", "iop");

                //Validacion manual antes de leer
                if (File.Exists(filePath) == false) //Exist = false
                {
                    //Devolver error
                    throw new Exception("Error: conexion con el servidor de identidad.");
                }

                IConfigSource source = new Nini.Config.IniConfigSource(filePath);
                var ldap_config = source.Configs["ldap"];

                int _port;
                if (int.TryParse(ldap_config.Get("port"), out _port))
                {
                    ServerPort = _port;
                }

                ServerIP = ldap_config.Get("server");
                UserDn = ldap_config.Get("user_dn");
                AdminDn = ldap_config.Get("admin_dn");
                AdminUser = ldap_config.Get("admin_user");
                AdminPassword = ldap_config.Get("admin_pass");

                if (String.IsNullOrEmpty(ServerIP) ||
                    ServerPort == null ||
                    String.IsNullOrEmpty(UserDn) ||
                    String.IsNullOrEmpty(AdminDn) ||
                    String.IsNullOrEmpty(AdminUser) ||
                    String.IsNullOrEmpty(AdminPassword)
                    )
                {
                    throw new Exception("Error interno. Credenciales invalidas.");
                }

            }
            catch (IOException ioEx)
            {
                Console.WriteLine(ioEx.Message);
                throw;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                throw;
            }

        }



        internal static NetworkCredential AdminCredential()
        {
            return new NetworkCredential($"uid={AdminUser},{AdminDn}", AdminPassword);
        }

        internal static NetworkCredential UserCredentials(string username, string password)
        {
            return new NetworkCredential($"uid={username},{UserDn}", password);
        }


        internal static LdapConnection Connection()
        {
            return new LdapConnection($"{ServerIP}:{ServerPort}");
        }


    }

}