Gerechten dranken menu

RestaurantManager/Menu/Dish.cs

@@ -0,0 +1,15 @@
+namespace RestaurantManager;
+
+public class Dish
+{
+    public int ID;
+    public string Name;
+    public decimal Price;
+
+    public Dish(int id, string name, decimal price)
+    {
+        this.ID = id;
+        this.Name = name;
+        this.Price = price;
+    }
+}    

RestaurantManager/Menu/Menu.cs

@@ -0,0 +1,31 @@
+namespace RestaurantManager;
+
+public class Menu
+{
+    public int ID;
+    public string Name;
+    public List<MenuCategory> Categories;
+
+    public Menu(int id, string name)
+    {
+        this.ID = id;
+        this.Name = name;
+        this.Categories = LoadCategoriesFromDatabase();
+    }
+
+
+    private List<MenuCategory> LoadCategoriesFromDatabase()
+    {
+        List<List<object>> categories = Program.Database.Execute(
+            """
+            SELECT mc.*
+            FROM menu_categories mc
+            JOIN menu_category_links mcl ON mc.id = mcl.category_id
+            WHERE mcl.menu_id = %s
+            """, ID);
+
+        return categories.Select(c => new MenuCategory(
+            (int)(long)c[0], 
+            (string)c[1])).ToList();
+    }
+}

RestaurantManager/Menu/MenuCategory.cs

@@ -0,0 +1,31 @@
+namespace RestaurantManager;
+
+public class MenuCategory
+{
+    public int ID;
+    public string Name;
+    public List<Dish> Dishes;
+
+    public MenuCategory(int id, string name)
+    {
+        this.ID = id;
+        this.Name = name;
+        this.Dishes = LoadDishesFromDatabase();
+    }
+
+    private List<Dish> LoadDishesFromDatabase()
+    {
+        List<List<object>> categories = Program.Database.Execute(
+            """
+            SELECT dishes.*
+            FROM dishes
+            JOIN category_dish_links cdl ON dishes.id = cdl.dish_id
+            WHERE cdl.category_id = %s
+            """, ID);
+
+        return categories.Select(d => new Dish(
+            (int)(long)d[0], 
+            (string)d[1], 
+            Convert.ToDecimal(d[2]))).ToList();
+    }
+}

RestaurantManager/Menu/MenuManager.cs

@@ -0,0 +1,15 @@
+namespace RestaurantManager;
+
+public static class MenuManager
+{
+    public static List<Menu> Menus = LoadMenusFromDatabase();
+
+    private static List<Menu> LoadMenusFromDatabase()
+    {
+        List<List<object>> menus = Program.Database.Execute("SELECT * FROM menus");
+
+        return menus.Select(m => new Menu(
+            (int)(long)m[0], 
+            (string)m[1])).ToList();
+    }
+}

RestaurantManager/Program.cs

@@ -2,8 +2,10 @@
 
 static class Program
 {
+    public static readonly DatabaseConnection Database = new DatabaseConnection("DatabaseCredentials.json");
+
     public static void Main(string[] args)
     {
-
+        
     }
 }

RestaurantManager/RestaurantManager.csproj

@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net6.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>