FlyTeam/SkyTeam/LogInPage.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using MySql.Data.MySqlClient;
using BCrypt.Net;

namespace SkyTeam
{
    public partial class LogInPage : Page
    {
        public LogInPage()
        {
            InitializeComponent();
        }

        private void AdminLink_Click(object sender, RoutedEventArgs e)
        {
            if (Application.Current.MainWindow is MainWindow mainWindow)
            {
                mainWindow.MainFrame.Navigate(new AdminLoginPage());
            }
        }

       
            private void LogInButton_Click(object sender, RoutedEventArgs e)
        {
            string email = BenutzernameTextBox.Text;
            string password = PasswortTextBox.Password;

            if (string.IsNullOrEmpty(email) || string.IsNullOrEmpty(password))
            {
                MessageBox.Show("Bitte Email und Passwort eingeben.");
                return;
            }

            string query = @"
        SELECT Id, Vorname, Rolle, PasswortHash 
        FROM users 
        WHERE Email = @email";

            try
            {
                using (MySqlConnection conn = new MySqlConnection(DatenbankServices.GetConnection()))
                {
                    conn.Open();

                    using (MySqlCommand cmd = new MySqlCommand(query, conn))
                    {
                        cmd.Parameters.AddWithValue("@email", email);

                        using (MySqlDataReader reader = cmd.ExecuteReader())
                        {
                            if (!reader.Read())
                            {
                                MessageBox.Show("Benutzer wurde nicht gefunden.");
                                return;
                            }

                            string storedHash = reader.GetString("PasswortHash");

                            if (!BCrypt.Net.BCrypt.Verify(password, storedHash))
                            {
                                MessageBox.Show("Falsches Passwort.");
                                return;
                            }

                            
                            SessionManager.CurrentUserId = reader.GetInt32("Id");
                            SessionManager.CurrentUserName = reader.GetString("Vorname");
                            SessionManager.Role = reader.GetString("Rolle");
                        }
                    }

                    
                    ((MainWindow)Application.Current.MainWindow)
                        .MainFrame.Navigate(new NavigationPage());
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Datenbankfehler: " + ex.Message);
            }
        }

        

        private void anmeldungsButton_Click(object sender, RoutedEventArgs e)
        {
            ((MainWindow)Application.Current.MainWindow)
                .MainFrame.Navigate(new RegistrationPage());
        }
    }
}