Admin view hinzugefügt

2026-09-14 19:20:37 +02:00
parent fbc37f3e2b
commit d8df625bac
8 changed files with 686 additions and 7 deletions
@@ -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;
+            }
+        }
+
    }
 }