package com.ruoyi.system.service.impl;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.system.config.ICBCConfig;
import com.ruoyi.system.dto.PhysicalGoodsPlaceOrderDTO;
import com.ruoyi.system.enums.PhysicalGoodsOrderStatusEnum;
import com.ruoyi.system.mapper.TPhysicalGoodsMapper;
import com.ruoyi.system.mapper.TPhysicalGoodsOrderMapper;
import com.ruoyi.system.model.TCompany;
import com.ruoyi.system.model.TPhysicalGoods;
import com.ruoyi.system.model.TPhysicalGoodsOrder;
import com.ruoyi.system.query.BigGiftPackageQuery;
import com.ruoyi.system.service.TAppUserService;
import com.ruoyi.system.service.TPhysicalGoodsOrderService;
import com.ruoyi.system.utils.ICBCPayUtil;
import com.ruoyi.system.utils.OrderCodeGenerator;
import com.ruoyi.system.vo.PlaceOrderVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * <p>
 * 实物商品订单 服务实现类
 * </p>
 *
 * @author xiaochen
 * @since 2025-12-08
 */
@Slf4j
@Service
public class TPhysicalGoodsOrderServiceImpl extends ServiceImpl<TPhysicalGoodsOrderMapper, TPhysicalGoodsOrder> implements TPhysicalGoodsOrderService {

    @Resource
    private TPhysicalGoodsMapper physicalGoodsMapper;

    @Resource
    private ICBCPayUtil icbcPayUtil;

    @Autowired
    private ICBCConfig icbcConfig;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private TAppUserService appUserService;

    /**
     * 实物商品支付参数 Redis Key 前缀
     */
    private static final String PHYSICAL_ORDER_PAY_PARAMS_KEY = "physical_order_pay_params:";

    /**
     * 支付参数缓存过期时间（24小时）
     */
    private static final long PAY_PARAMS_EXPIRE_HOURS = 60;

    @Override
    public Page<TPhysicalGoodsOrder> pageList(BigGiftPackageQuery query) {
        Page<TPhysicalGoodsOrder> page = new Page<>(query.getPageNum(), query.getPageSize());
        return this.baseMapper.pageList(page, query);
    }

    @Override
    public List<TPhysicalGoodsOrder> export(BigGiftPackageQuery query) {
        return this.baseMapper.export(query);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public PlaceOrderVO placeOrder(PhysicalGoodsPlaceOrderDTO dto, Integer appUserId, String openid) {
        // 1. 校验商品是否存在
        TPhysicalGoods physicalGoods = physicalGoodsMapper.selectById(dto.getPhysicalGoodsId());
        if (physicalGoods == null) {
            throw new ServiceException("商品不存在");
        }

        // 2. 创建订单
        TPhysicalGoodsOrder order = new TPhysicalGoodsOrder();
        String orderCode = OrderCodeGenerator.generatePhysicalGoodsOrderCode();
        order.setCode(orderCode);
        order.setAppUserId(appUserId);
        order.setCreateTime(LocalDateTime.now());
        order.setPhysicalGoodsId(dto.getPhysicalGoodsId());
        order.setPhysicalGoods(JSON.toJSONString(physicalGoods));
        order.setOrderPrice(physicalGoods.getTotalPrice());
        order.setPaymentPrice(physicalGoods.getTotalPrice());
        // 支付方式：1=微信
        order.setPaymentMethod(1);
        // 订单状态：1=待付款
        order.setStatus(PhysicalGoodsOrderStatusEnum.PENDING_PAYMENT.getCode());
        order.setDelFlag(0);

        //查询用户所属公司，获取经销商商户号
        TCompany company = appUserService.getUserCompany(appUserId);
        order.setCompanyId(company.getId());
        this.save(order);

        // 3. 更新商品销量
        Integer currentSales = physicalGoods.getSales() == null ? 0 : physicalGoods.getSales();
        physicalGoods.setSales(currentSales + 1);
        physicalGoodsMapper.updateById(physicalGoods);
        // 4. 调用工行支付
        log.info("实物商品下单，订单号：{}，支付金额：{}，用户ID：{}", orderCode, physicalGoods.getTotalPrice(), appUserId);
        JSONObject paymentParams = icbcPayUtil.wechatPay(orderCode, physicalGoods.getTotalPrice(), physicalGoods.getName(),
                openid,icbcConfig.getNotifyUrl()+"/physical/pay-notify", company.getMerchantNumber(), company.getMerchantOpenid());

        // 5. 缓存支付参数到 Redis（用于立即支付）
        String redisKey = PHYSICAL_ORDER_PAY_PARAMS_KEY + order.getId();
        redisTemplate.opsForValue().set(redisKey, paymentParams.toJSONString(), PAY_PARAMS_EXPIRE_HOURS, TimeUnit.MINUTES);
        log.info("实物商品支付参数已缓存，订单ID：{}，Redis Key：{}", order.getId(), redisKey);

        // 6. 构建返回结果
        PlaceOrderVO vo = new PlaceOrderVO();
        vo.setOrderIds(Collections.singletonList(order.getId()));
        vo.setOrderCodes(Collections.singletonList(orderCode));
        vo.setPaymentParams(paymentParams);
        return vo;
    }

    @Override
    public PlaceOrderVO payNow(Integer orderId, Integer appUserId) {
        // 1. 查询订单
        TPhysicalGoodsOrder order = this.getById(orderId);
        if (order == null) {
            throw new ServiceException("订单不存在");
        }

        // 2. 校验订单所属用户
        if (!order.getAppUserId().equals(appUserId)) {
            throw new ServiceException("无权操作此订单");
        }

        // 3. 校验订单状态（必须是待付款）
        if (!PhysicalGoodsOrderStatusEnum.PENDING_PAYMENT.getCode().equals(order.getStatus())) {
            throw new ServiceException("订单状态不正确，无法支付");
        }

        // 4. 从 Redis 获取缓存的支付参数
        String redisKey = PHYSICAL_ORDER_PAY_PARAMS_KEY + orderId;
        Object cachedParams = redisTemplate.opsForValue().get(redisKey);
        if (cachedParams == null) {
            throw new ServiceException("支付参数已过期，请重新下单");
        }

        // 5. 构建返回结果
        PlaceOrderVO vo = new PlaceOrderVO();
        vo.setOrderIds(Collections.singletonList(order.getId()));
        vo.setOrderCodes(Collections.singletonList(order.getCode()));
        vo.setPaymentParams(JSON.parseObject(cachedParams.toString()));

        log.info("实物商品立即支付，订单ID：{}，用户ID：{}", orderId, appUserId);
        return vo;
    }
}