database

src/main/java/dev/dao/OrderDao.java

@@ -1,25 +1,130 @@
 package dev.dao;
 
+import dev.database.DatabaseConnection;
 import dev.model.Order;
 
+import java.sql.*;
+import java.util.ArrayList;
 import java.util.List;
 
+
 public class OrderDao {
 
+
     public int save(Order order) {
 
-        // TODO:
-        // Insert order and return generated id
+
+        String sql =
+                "INSERT INTO orders(user_id,total_price) VALUES(?,?)";
+
+
+        try(Connection con = DatabaseConnection.getConnection();
+
+            PreparedStatement ps =
+                    con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)){
+
+
+            ps.setInt(1, order.getUserId());
+
+            ps.setDouble(2, order.getTotalPrice());
+
+
+            ps.executeUpdate();
+
+
+
+            ResultSet rs = ps.getGeneratedKeys();
+
+
+            if(rs.next()){
+
+                return rs.getInt(1);
+
+            }
+
+
+        }catch(SQLException e){
+
+            e.printStackTrace();
+
+        }
+
 
         return -1;
+
     }
 
-    public List<Order> findByUserId(int userId) {
 
-        // TODO:
-        // Retrieve all orders of a user
 
-        return null;
+
+    public List<Order> findByUserId(int userId){
+
+
+        List<Order> orders = new ArrayList<>();
+
+
+        String sql =
+                "SELECT * FROM orders WHERE user_id=?";
+
+
+        try(Connection con = DatabaseConnection.getConnection();
+
+            PreparedStatement ps =
+                    con.prepareStatement(sql)){
+
+
+            ps.setInt(1,userId);
+
+
+
+            ResultSet rs = ps.executeQuery();
+
+
+
+            while(rs.next()){
+
+
+                Order order = new Order();
+
+
+                order.setId(rs.getInt("id"));
+
+                order.setUserId(rs.getInt("user_id"));
+
+                order.setTotalPrice(
+                        rs.getDouble("total_price")
+                );
+
+
+                Timestamp timestamp =
+                        rs.getTimestamp("created_at");
+
+
+                if(timestamp != null){
+
+                    order.setCreatedAt(
+                            timestamp.toLocalDateTime()
+                    );
+
+                }
+
+
+                orders.add(order);
+
+            }
+
+
+
+        }catch(SQLException e){
+
+            e.printStackTrace();
+
+        }
+
+
+        return orders;
+
     }
 
+
 }