package com.webmanage.service.impl;

import com.webmanage.entity.Cart;
import com.webmanage.mapper.CartMapper;
import com.webmanage.service.CartPersistenceService;
import com.webmanage.vo.CartItemVO;
import org.springframework.beans.BeanUtils;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;

@Service
public class CartPersistenceServiceImpl implements CartPersistenceService {

    @Resource
    private CartMapper cartMapper;

    @Override
    @Async("asyncExecutor")
    public void saveOrUpdate(String userId, String unitId, CartItemVO item) {
        try {
            Cart cart = new Cart();
            BeanUtils.copyProperties(item, cart);
            cart.setUserId(userId);
            if(StringUtils.hasText(unitId)){
                cart.setUnitId(unitId);
            }
            cart.setUpdateTime(LocalDateTime.now());
            Cart existing = cartMapper.selectByUserIdUnitIdAndPricingId(userId, unitId, item.getPricingId());
            if (existing != null) {
                cart.setId(existing.getId());
                cartMapper.updateById(cart);
            } else {
                cart.setAddTime(LocalDateTime.now());
                cartMapper.insert(cart);
            }
        } catch (Exception ignored) {}
    }

    @Override
    @Async("asyncExecutor")
    public void remove(String userId, String unitId, Long pricingId) {
        try {
            Cart existing = cartMapper.selectByUserIdUnitIdAndPricingId(userId, unitId, pricingId);
            if (existing != null) {
                cartMapper.deleteById(existing.getId());
            }
        } catch (Exception ignored) {}
    }

    @Override
    @Async("asyncExecutor")
    public void clear(String userId, String unitId) {
        try {
            java.util.List<Cart> cartItems = cartMapper.selectByUserIdAndUnitId(userId, unitId);
            for (Cart item : cartItems) {
                cartMapper.deleteById(item.getId());
            }
        } catch (Exception ignored) {}
    }
}