package com.kobe.productmanagement.domain;

import com.kobe.productmanagement.common.BaseTimeEntity;
import jakarta.persistence.*;
import lombok.*;

@Entity
@Getter
@Setter
@NoArgsConstructor(access = AccessLevel.PROTECTED)
@Table(name = "order_items")
public class OrderItem extends BaseTimeEntity {

	@Id
	@Column(length = 26)
	private String orderItemId;

	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "order_id")
	private Order order;

	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "product_id")
	private Product product;

	@Column(nullable = false)
	private int quantity; // 주문 수량

	@Column(nullable = false)
	private int orderPrice; // 주문 당시 가격

	@Builder
	public OrderItem(String orderItemId,
	                 Order order,
	                 Product product,
	                 int quantity,
	                 int orderPrice
	) {
		this.orderItemId = orderItemId;
		this.order = order;
		this.product = product;
		this.quantity = quantity;
		this.orderPrice = orderPrice;
	}

	public static OrderItem createOrderItem(String orderItemId,
	                                        Order order,
	                                        Product product,
	                                        int quantity
	) {
		if (product.getStockQuantity() < quantity) {
			throw new IllegalArgumentException("상품의 재고가 부족합니다.");
		}

		OrderItem orderItem = OrderItem.builder()
			.orderItemId(orderItemId)
			.order(order)
			.product(product)
			.quantity(quantity)
			.orderPrice(product.getProductRegularPrice()) // 생성 시점의 상품 가격을 사용
			.build();

		order.addOrderItem(orderItem);
		return orderItem;
	}

	public int getTotalPrice() {
		return getOrderPrice() * getQuantity();
	}
}

// domain/OrderItem.java
public static OrderItem createOrderItem(String orderItemId,
                                        Order order, // Order 객체를 파라미터로 받음
                                        Product product,
                                        int quantity) {
    if (product.getStockQuantity() < quantity) {
        throw new IllegalArgumentException("상품의 재고가 부족합니다.");
    }

    OrderItem orderItem = OrderItem.builder()
        .orderItemId(orderItemId)
        .product(product)
        .quantity(quantity)
        .orderPrice(product.getProductRegularPrice())
        .build();

    order.addOrderItem(orderItem); // Order에 연관관계 편의 메서드 호출
    return orderItem;
}

// domain/Order.java
public class Order extends BaseTimeEntity {
    // ...
    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL)
    private List<OrderItem> orderItems = new ArrayList<>();

    //==연관관계 편의 메서드==//
    public void addOrderItem(OrderItem orderItem) {
        orderItems.add(orderItem);
        orderItem.setOrder(this);
    }
}