add MenuItem and MenuItemDao

src/main/java/dev/dao/MenuItemDao.java

@@ -1,23 +1,82 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.MenuItem;
 
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.List;
 
 public class MenuItemDao {
 
     public List<MenuItem> findAll() {
 
-        // TODO:
-        // Retrieve all menu items
+        String sql = "SELECT id, name, description, price, category FROM menu_items";
 
-        return null;
+        List<MenuItem> menuItems = new ArrayList<>();
+
+        try (
+                Connection connection = DatabaseConnection.getConnection();
+                PreparedStatement statement = connection.prepareStatement(sql);
+                ResultSet resultSet = statement.executeQuery()
+        ) {
+
+            while (resultSet.next()) {
+
+                MenuItem menuItem = new MenuItem();
+
+                menuItem.setId(resultSet.getInt("id"));
+                menuItem.setName(resultSet.getString("name"));
+                menuItem.setDescription(resultSet.getString("description"));
+                menuItem.setPrice(resultSet.getDouble("price"));
+                menuItem.setCategory(resultSet.getString("category"));
+
+                menuItems.add(menuItem);
+            }
+
+        } catch (SQLException e) {
+
+            System.out.println("Error loading menu items: " + e.getMessage());
+
+        }
+
+        return menuItems;
     }
 
     public MenuItem findById(int id) {
 
-        // TODO:
-        // Find menu item by id
+        String sql = "SELECT id, name, description, price, category FROM menu_items WHERE id = ?";
+
+        try (
+                Connection connection = DatabaseConnection.getConnection();
+                PreparedStatement statement = connection.prepareStatement(sql)
+        ) {
+
+            statement.setInt(1, id);
+
+            ResultSet resultSet = statement.executeQuery();
+
+            if (resultSet.next()) {
+
+                MenuItem menuItem = new MenuItem();
+
+                menuItem.setId(resultSet.getInt("id"));
+                menuItem.setName(resultSet.getString("name"));
+                menuItem.setDescription(resultSet.getString("description"));
+                menuItem.setPrice(resultSet.getDouble("price"));
+                menuItem.setCategory(resultSet.getString("category"));
+
+                return menuItem;
+            }
+
+        } catch (SQLException e) {
+
+            System.out.println("Error finding menu item: " + e.getMessage());
+
+        }
 
         return null;
     }