From d8df625bac9f8114cb20d78dfd458592c960544d Mon Sep 17 00:00:00 2001
From: "NBTEMP\\bib" <lenard_gerdes@gmx.de>
Date: Mon, 14 Sep 2026 19:20:37 +0200
Subject: [PATCH] =?UTF-8?q?Admin=20view=20hinzugef=C3=BCgt?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Casino/AdminView.xaml       | 102 ++++++++++++++++++++++
 Casino/AdminView.xaml.cs    | 148 ++++++++++++++++++++++++++++++++
 Casino/Database.cs          | 118 +++++++++++++++++++++++++-
 Casino/EditUserView.xaml    | 127 ++++++++++++++++++++++++++++
 Casino/EditUserView.xaml.cs | 163 ++++++++++++++++++++++++++++++++++++
 Casino/Login.xaml.cs        |  20 +++--
 Casino/READ ME.txt          |   9 ++
 Casino/User.cs              |   6 +-
 8 files changed, 686 insertions(+), 7 deletions(-)
 create mode 100644 Casino/AdminView.xaml
 create mode 100644 Casino/AdminView.xaml.cs
 create mode 100644 Casino/EditUserView.xaml
 create mode 100644 Casino/EditUserView.xaml.cs

diff --git a/Casino/AdminView.xaml b/Casino/AdminView.xaml
new file mode 100644
index 0000000..c3667b1
--- /dev/null
+++ b/Casino/AdminView.xaml
@@ -0,0 +1,102 @@
+<Window x:Class="Casino.AdminView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Casino"
+        mc:Ignorable="d"
+        Title="Adminbereich"
+        Height="700"
+        Width="1100"
+        WindowStartupLocation="CenterScreen">
+
+    <Grid Margin="20">
+
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+
+        <!-- Überschrift -->
+        <TextBlock Grid.Row="0"
+                   Text="Adminbereich"
+                   FontSize="30"
+                   FontWeight="Bold"
+                   HorizontalAlignment="Center"
+                   Margin="0,0,0,20"/>
+
+        <!-- Nutzerliste -->
+        <DataGrid x:Name="UserDataGrid"
+                  Grid.Row="1"
+                  AutoGenerateColumns="False"
+                  IsReadOnly="True"
+                  SelectionMode="Single"
+                  CanUserAddRows="False"
+                  Margin="0,0,0,20">
+
+            <DataGrid.Columns>
+
+                <DataGridTextColumn Header="ID"
+                                    Binding="{Binding ID}"
+                                    Width="220"/>
+
+                <DataGridTextColumn Header="Name"
+                                    Binding="{Binding Name}"
+                                    Width="150"/>
+
+                <DataGridTextColumn Header="Alter"
+                                    Binding="{Binding Age}"
+                                    Width="80"/>
+
+                <DataGridTextColumn Header="Passwort"
+                                    Binding="{Binding Passwort}"
+                                    Width="280"/>
+
+                <DataGridTextColumn Header="Geld"
+                                    Binding="{Binding Geld}"
+                                    Width="100"/>
+
+                <DataGridTextColumn Header="Rolle"
+                                    Binding="{Binding Rolle}"
+                                    Width="100"/>
+
+            </DataGrid.Columns>
+
+        </DataGrid>
+
+        <!-- Buttons -->
+        <StackPanel Grid.Row="2"
+                    Orientation="Horizontal"
+                    HorizontalAlignment="Center">
+
+            <Button x:Name="BtnBearbeiten"
+                    Content="Bearbeiten"
+                    Width="150"
+                    Height="45"
+                    Margin="10"
+                    Click="BtnBearbeiten_Click"/>
+
+            <Button x:Name="BtnLoeschen"
+                    Content="Löschen"
+                    Width="150"
+                    Height="45"
+                    Margin="10"
+                    Click="BtnLoeschen_Click"/>
+
+            <Button Content="Aktualisieren"
+                    Width="150"
+                    Height="45"
+                    Margin="10"
+                    Click="BtnAktualisieren_Click"/>
+
+            <Button Content="Schließen"
+                    Width="150"
+                    Height="45"
+                    Margin="10"
+                    Click="BtnSchliessen_Click"/>
+
+        </StackPanel>
+
+    </Grid>
+</Window>
\ No newline at end of file
diff --git a/Casino/AdminView.xaml.cs b/Casino/AdminView.xaml.cs
new file mode 100644
index 0000000..c6f7a15
--- /dev/null
+++ b/Casino/AdminView.xaml.cs
@@ -0,0 +1,148 @@
+using System.Collections.ObjectModel;
+using System.Windows;
+
+namespace Casino
+{
+    public partial class AdminView : Window
+    {
+        private readonly Database db = new Database();
+
+        private ObservableCollection<User> users;
+
+        public AdminView()
+        {
+            InitializeComponent();
+
+            // Prüfen, ob der aktuell eingeloggte Benutzer Admin ist
+            if (MainWindow.currentUser < 0)
+            {
+                MessageBox.Show(
+                    "Es ist kein Benutzer eingeloggt.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+
+                Close();
+                return;
+            }
+
+            users = db.GetUser();
+
+            // Sicherheitsprüfung über die Datenbank
+            if (MainWindow.currentUser >= users.Count ||
+                !db.SelectAdmin(users[MainWindow.currentUser].ID))
+            {
+                MessageBox.Show(
+                    "Du hast keine Admin-Rechte.",
+                    "Zugriff verweigert",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                Close();
+                return;
+            }
+
+            UserDataGrid.ItemsSource = users;
+        }
+
+        // ==========================================
+        // BEARBEITEN
+        // ==========================================
+
+        private void BtnBearbeiten_Click(object sender, RoutedEventArgs e)
+        {
+            if (UserDataGrid.SelectedItem is not User selectedUser)
+            {
+                MessageBox.Show(
+                    "Bitte wähle zuerst einen Benutzer aus.",
+                    "Kein Benutzer ausgewählt",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            EditUserView editView = new EditUserView(selectedUser);
+
+            // Eigenes Fenster öffnen
+            editView.ShowDialog();
+
+            // Nach dem Schließen Daten neu laden
+            users = db.GetUser();
+            UserDataGrid.ItemsSource = users;
+        }
+
+        // ==========================================
+        // LÖSCHEN
+        // ==========================================
+
+        private void BtnLoeschen_Click(object sender, RoutedEventArgs e)
+        {
+            if (UserDataGrid.SelectedItem is not User selectedUser)
+            {
+                MessageBox.Show(
+                    "Bitte wähle zuerst einen Benutzer aus.",
+                    "Kein Benutzer ausgewählt",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            // Sicherheitsabfrage
+            MessageBoxResult result = MessageBox.Show(
+                $"Möchtest du den Benutzer '{selectedUser.Name}' wirklich löschen?",
+                "Benutzer löschen",
+                MessageBoxButton.YesNo,
+                MessageBoxImage.Warning);
+
+            if (result != MessageBoxResult.Yes)
+            {
+                return;
+            }
+
+            // Benutzer aus Datenbank löschen
+            bool success = db.DeleteUser(selectedUser.ID);
+
+            if (success)
+            {
+                MessageBox.Show(
+                    "Benutzer wurde erfolgreich gelöscht.",
+                    "Erfolgreich",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Information);
+
+                // Tabelle aktualisieren
+                users = db.GetUser();
+                UserDataGrid.ItemsSource = users;
+            }
+            else
+            {
+                MessageBox.Show(
+                    "Der Benutzer konnte nicht gelöscht werden.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+            }
+        }
+
+        // ==========================================
+        // AKTUALISIEREN
+        // ==========================================
+
+        private void BtnAktualisieren_Click(object sender, RoutedEventArgs e)
+        {
+            users = db.GetUser();
+            UserDataGrid.ItemsSource = users;
+        }
+
+        // ==========================================
+        // SCHLIESSEN
+        // ==========================================
+
+        private void BtnSchliessen_Click(object sender, RoutedEventArgs e)
+        {
+            Close();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Casino/Database.cs b/Casino/Database.cs
index 4273045..935851f 100644
--- a/Casino/Database.cs
+++ b/Casino/Database.cs
@@ -5,6 +5,7 @@ using System.Data;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows;
 using MySql.Data.MySqlClient;
 
 namespace Casino
@@ -40,7 +41,8 @@ namespace Casino
                         Name = myReader.GetString("name"),
                         Alter = myReader.GetInt32("age"),
                         Passwort = myReader.GetString("passwort"),
-                        Geld = myReader.GetDecimal("geld")
+                        Geld = myReader.GetDecimal("geld"),
+                        Rolle = myReader.GetString("Rolle")
                     };
 
                     user.Add(u);
@@ -200,5 +202,119 @@ namespace Casino
             }
         }
 
+        public bool SelectAdmin(string userId)
+        {
+            using MySqlConnection connection = new MySqlConnection(myConnectionString);
+
+            try
+            {
+                connection.Open();
+
+                string sql = @"
+            SELECT COUNT(*)
+            FROM Nutzer
+            WHERE id = @id
+              AND Rolle = 'Admin'";
+
+                using MySqlCommand command = new MySqlCommand(sql, connection);
+
+                command.Parameters.AddWithValue("@id", userId);
+
+                int count = Convert.ToInt32(command.ExecuteScalar());
+
+                return count > 0;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(
+                    "Fehler bei der Admin-Abfrage:\n" + ex.Message,
+                    "Datenbankfehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+
+                return false;
+            }
+        }
+
+        public bool DeleteUser(string userId)
+        {
+            using MySqlConnection connection = new MySqlConnection(myConnectionString);
+
+            try
+            {
+                connection.Open();
+
+                string sql = @"
+            DELETE FROM Nutzer
+            WHERE id = @id";
+
+                using MySqlCommand command = new MySqlCommand(sql, connection);
+
+                command.Parameters.AddWithValue("@id", userId);
+
+                int affectedRows = command.ExecuteNonQuery();
+
+                return affectedRows > 0;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(
+                    "Fehler beim Löschen des Benutzers:\n" + ex.Message,
+                    "Datenbankfehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+
+                return false;
+            }
+        }
+
+        public bool UpdateUser(
+            string userId,
+            string name,
+            int age,
+            string passwort,
+            decimal geld,
+            string rolle)
+        {
+            using MySqlConnection connection = new MySqlConnection(myConnectionString);
+
+            try
+            {
+                connection.Open();
+
+                string sql = @"
+            UPDATE Nutzer
+            SET name = @name,
+                age = @age,
+                passwort = @passwort,
+                geld = @geld,
+                Rolle = @rolle
+            WHERE id = @id";
+
+                using MySqlCommand command = new MySqlCommand(sql, connection);
+
+                command.Parameters.AddWithValue("@name", name);
+                command.Parameters.AddWithValue("@age", age);
+                command.Parameters.AddWithValue("@passwort", passwort);
+                command.Parameters.AddWithValue("@geld", geld);
+                command.Parameters.AddWithValue("@rolle", rolle);
+                command.Parameters.AddWithValue("@id", userId);
+
+                int affectedRows = command.ExecuteNonQuery();
+
+                return affectedRows > 0;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(
+                    "Fehler beim Aktualisieren des Benutzers:\n" + ex.Message,
+                    "Datenbankfehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+
+                return false;
+            }
+        }
+
     }
 }
diff --git a/Casino/EditUserView.xaml b/Casino/EditUserView.xaml
new file mode 100644
index 0000000..2af82bc
--- /dev/null
+++ b/Casino/EditUserView.xaml
@@ -0,0 +1,127 @@
+<Window x:Class="Casino.EditUserView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="Benutzer bearbeiten"
+        Height="550"
+        Width="500"
+        WindowStartupLocation="CenterScreen">
+
+    <Grid Margin="25">
+
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <!-- Überschrift -->
+
+        <TextBlock Grid.Row="0"
+                   Text="Benutzer bearbeiten"
+                   FontSize="28"
+                   FontWeight="Bold"
+                   HorizontalAlignment="Center"
+                   Margin="0,0,0,25"/>
+
+        <!-- Name -->
+
+        <StackPanel Grid.Row="1"
+                    Margin="0,5">
+
+            <TextBlock Text="Name"
+                       FontWeight="Bold"/>
+
+            <TextBox x:Name="TxtName"
+                     Height="35"/>
+
+        </StackPanel>
+
+        <!-- Alter -->
+
+        <StackPanel Grid.Row="2"
+                    Margin="0,5">
+
+            <TextBlock Text="Alter"
+                       FontWeight="Bold"/>
+
+            <TextBox x:Name="TxtAge"
+                     Height="35"/>
+
+        </StackPanel>
+
+        <!-- Passwort -->
+
+        <StackPanel Grid.Row="3"
+                    Margin="0,5">
+
+            <TextBlock Text="Neues Passwort"
+                       FontWeight="Bold"/>
+
+            <PasswordBox x:Name="TxtPasswort"
+                         Height="35"/>
+
+            <TextBlock Text="Leer lassen = Passwort nicht ändern"
+                       FontSize="12"
+                       Foreground="Gray"/>
+
+        </StackPanel>
+
+        <!-- Geld -->
+
+        <StackPanel Grid.Row="4"
+                    Margin="0,5">
+
+            <TextBlock Text="Geld"
+                       FontWeight="Bold"/>
+
+            <TextBox x:Name="TxtGeld"
+                     Height="35"/>
+
+        </StackPanel>
+
+        <!-- Rolle -->
+
+        <StackPanel Grid.Row="5"
+                    Margin="0,5">
+
+            <TextBlock Text="Rolle"
+                       FontWeight="Bold"/>
+
+            <ComboBox x:Name="CmbRolle"
+                      Height="35">
+
+                <ComboBoxItem Content="User"/>
+                <ComboBoxItem Content="Admin"/>
+
+            </ComboBox>
+
+        </StackPanel>
+
+        <!-- Buttons -->
+
+        <StackPanel Grid.Row="6"
+                    Orientation="Horizontal"
+                    HorizontalAlignment="Center"
+                    VerticalAlignment="Bottom"
+                    Margin="0,25,0,0">
+
+            <Button Content="Speichern"
+                    Width="140"
+                    Height="40"
+                    Margin="10"
+                    Click="BtnSpeichern_Click"/>
+
+            <Button Content="Abbrechen"
+                    Width="140"
+                    Height="40"
+                    Margin="10"
+                    Click="BtnAbbrechen_Click"/>
+
+        </StackPanel>
+
+    </Grid>
+</Window>
\ No newline at end of file
diff --git a/Casino/EditUserView.xaml.cs b/Casino/EditUserView.xaml.cs
new file mode 100644
index 0000000..04a95b3
--- /dev/null
+++ b/Casino/EditUserView.xaml.cs
@@ -0,0 +1,163 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace Casino
+{
+    public partial class EditUserView : Window
+    {
+        private readonly Database db = new Database();
+
+        private readonly User selectedUser;
+
+        public EditUserView(User user)
+        {
+            InitializeComponent();
+
+            selectedUser = user;
+
+            // Bestehende Werte anzeigen
+            TxtName.Text = selectedUser.Name;
+            TxtAge.Text = selectedUser.Alter.ToString();
+            TxtGeld.Text = selectedUser.Geld.ToString();
+
+            // Rolle auswählen
+            foreach (ComboBoxItem item in CmbRolle.Items)
+            {
+                if (item.Content?.ToString() == selectedUser.Rolle)
+                {
+                    CmbRolle.SelectedItem = item;
+                    break;
+                }
+            }
+        }
+
+        // ==========================================
+        // SPEICHERN
+        // ==========================================
+
+        private void BtnSpeichern_Click(object sender, RoutedEventArgs e)
+        {
+            // Name prüfen
+            if (string.IsNullOrWhiteSpace(TxtName.Text))
+            {
+                MessageBox.Show(
+                    "Bitte gib einen Namen ein.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            // Alter prüfen
+            if (!int.TryParse(TxtAge.Text, out int age) ||
+                age < 0 ||
+                age > 150)
+            {
+                MessageBox.Show(
+                    "Bitte gib ein gültiges Alter ein.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            // Geld prüfen
+            if (!decimal.TryParse(TxtGeld.Text, out decimal geld))
+            {
+                MessageBox.Show(
+                    "Bitte gib einen gültigen Geldbetrag ein.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            // Rolle prüfen
+            if (CmbRolle.SelectedItem is not ComboBoxItem selectedRoleItem)
+            {
+                MessageBox.Show(
+                    "Bitte wähle eine Rolle aus.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Warning);
+
+                return;
+            }
+
+            string rolle = selectedRoleItem.Content?.ToString() ?? "User";
+
+            // Passwort:
+            // leer = altes Passwort behalten
+            string passwort = selectedUser.Passwort;
+
+            if (!string.IsNullOrWhiteSpace(TxtPasswort.Password))
+            {
+                passwort = HashPassword(TxtPasswort.Password);
+            }
+
+            // Datenbank aktualisieren
+            bool success = db.UpdateUser(
+                selectedUser.ID,
+                TxtName.Text.Trim(),
+                age,
+                passwort,
+                geld,
+                rolle);
+
+            if (success)
+            {
+                MessageBox.Show(
+                    "Benutzer wurde erfolgreich aktualisiert.",
+                    "Erfolgreich",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Information);
+
+                Close();
+            }
+            else
+            {
+                MessageBox.Show(
+                    "Die Änderungen konnten nicht gespeichert werden.",
+                    "Fehler",
+                    MessageBoxButton.OK,
+                    MessageBoxImage.Error);
+            }
+        }
+
+        // ==========================================
+        // ABBRECHEN
+        // ==========================================
+
+        private void BtnAbbrechen_Click(object sender, RoutedEventArgs e)
+        {
+            Close();
+        }
+
+        // ==========================================
+        // PASSWORT HASHEN
+        // ==========================================
+
+        private static string HashPassword(string password)
+        {
+            using SHA256 sha256 = SHA256.Create();
+
+            byte[] bytes = Encoding.UTF8.GetBytes(password);
+            byte[] hash = sha256.ComputeHash(bytes);
+
+            StringBuilder builder = new StringBuilder();
+
+            foreach (byte b in hash)
+            {
+                builder.Append(b.ToString("X2"));
+            }
+
+            return builder.ToString();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Casino/Login.xaml.cs b/Casino/Login.xaml.cs
index 99dcd05..1866eb0 100644
--- a/Casino/Login.xaml.cs
+++ b/Casino/Login.xaml.cs
@@ -26,11 +26,14 @@ namespace Casino
     /// </summary>
     public partial class Login : Window
     {
+        Database db = new Database();
+        ObservableCollection<User> users = new ObservableCollection<User>();
+        
 
         public Login()
         {
             InitializeComponent();
-            
+            users = db.GetUser();
         }
       
 
@@ -39,10 +42,19 @@ namespace Casino
         {
             if (checkLogin(TxtName.Text, TxtPasswort.Password)) 
             {
-                
+                Console.WriteLine(users[MainWindow.currentUser].Rolle);
+                if (users[MainWindow.currentUser].Rolle.Equals("Admin"))
+                {
+                    AdminView adminView = new AdminView();
+                    adminView.Show();
+                    Close();
+                }else
+                {
                     MainWindow mainWindow = new MainWindow();
                     mainWindow.Show();
                     Close();
+                }
+                    
                 
             }
             else
@@ -53,9 +65,7 @@ namespace Casino
 
         private bool checkLogin(string name, string passwort)
         {
-            Database db = new Database();
-            ObservableCollection<User> users = new ObservableCollection<User>();
-            users = db.GetUser();
+            
             string hash = HashPassword(passwort);
 
             for (int i = 0; i < users.Count(); i++)
diff --git a/Casino/READ ME.txt b/Casino/READ ME.txt
index e69de29..15e09ca 100644
--- a/Casino/READ ME.txt	
+++ b/Casino/READ ME.txt	
@@ -0,0 +1,9 @@
+Name/Passwort
+Test User:
+(Günter/123)
+(Nutzer/Test)
+(Gerdi/Mast)
+
+
+Admin:
+(Admin/nimda)
\ No newline at end of file
diff --git a/Casino/User.cs b/Casino/User.cs
index e32f4b3..31b5140 100644
--- a/Casino/User.cs
+++ b/Casino/User.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Data;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -13,6 +14,7 @@ namespace Casino
         public int Alter {  get; set; }
         public string Passwort { get; set; } 
         public decimal Geld { get; set; }
+        public  string Rolle { get; set; }
         public User(string name, int age, string passwort) 
         {
             ID = ID_Generation();
@@ -20,14 +22,16 @@ namespace Casino
             Alter = age;
             Passwort = passwort;
             Geld = 1000;
+            Rolle = "User";
         }
-        public User(string id, string name, int age,string passwort, int geld) 
+        public User(string id, string name, int age,string passwort, int geld, string rolle) 
         {
             ID = id;
             Name = name;
             Alter = age;
             Passwort = passwort;
             Geld = geld;
+            Rolle = rolle;
         }
 
         private string ID_Generation()