package com.ruoyi.im.service.impl;

import cn.hutool.core.util.ObjectUtil;
import cn.hutool.json.JSON;
import cn.hutool.json.JSONUtil;
import com.alibaba.druid.support.json.JSONUtils;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.im.comm.Result;
import com.ruoyi.im.service.InsuranceProductService;
import com.ruoyi.im.service.UserKycService;
import com.ruoyi.im.service.UserPolicyService;
import com.ruoyi.im.util.PayService;
import com.ruoyi.im.util.ValidatorUtil;
import com.ruoyi.system.domain.*;
import com.ruoyi.system.domain.dto.UserPolicyDto;
import com.ruoyi.system.mapper.UserPolicyMapper;
import com.ruoyi.system.service.PaymentRecordService;
import com.ruoyi.system.service.UserAccountService;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.text.ParseException;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.atomic.AtomicLong;

@Service
public class UserPolicyServiceImpl extends ServiceImpl<UserPolicyMapper, UserPolicy> implements UserPolicyService {

    @Autowired
    InsuranceProductService insuranceProductService;
    @Autowired
    UserAccountService userAccountService;
    @Autowired
    private PayService payService;
    @Autowired
    private PaymentRecordService paymentRecordService;
    @Autowired
    private UserKycService userKycService;


    @Override
    @Transactional(rollbackFor = Exception.class)
    public Result purchaseApplication(UserPolicyDto dto) throws ParseException {
        UserAccount userAccount = userAccountService.getOne(new LambdaQueryWrapper<UserAccount>()
                .eq(UserAccount::getAccount,dto.getAccount()));
        if(ObjectUtil.isEmpty(userAccount)){
            return Result.error("请重新登录，未查询到你的信息！");
        }

        if(userAccount.getKycStatus() == 2){
            return Result.error("请先实名认证");
        }else if(userAccount.getKycStatus() == 0){
            return Result.error("实名认证审核中，请耐心等等");
        }

        // 验证手机号
        boolean isPhoneValid = ValidatorUtil.isValidPhone(dto.getPhone());
        if(!isPhoneValid){
            return Result.error("手机号格式不正确！");
        }

        long count = count(new LambdaQueryWrapper<UserPolicy>()
                .eq(UserPolicy::getUserId, userAccount.getId())
                .eq(UserPolicy::getProductId,dto.getProductId())
                .eq(UserPolicy::getPolicyStatus, UserPolicy.PolicyStatus.PENDING)
                .and(a-> a.eq(UserPolicy::getApprovalStatus, 0)
                .or()
                .eq(UserPolicy::getApprovalStatus, 1))

        );
        if(count > 0){
            return Result.error("请勿重复提交，如未支付请3-5分钟重新提交申请");
        }
        InsuranceProduct insuranceProduct = insuranceProductService.getById(dto.getProductId());
        if(ObjectUtil.isEmpty(insuranceProduct)){
            return Result.error("该产品停止购买或已下架！");
        }
        if(userAccount.getBalance().compareTo(insuranceProduct.getPremium()) < 0){
            String orderNo = generateOrderNo();
            String payOrder = payService.createOrder(
                    insuranceProduct.getPremium(),
                    orderNo,
                    dto.getPayProductId()
            );

            Map<String, Object> parse = (Map<String, Object>) JSONUtils.parse(payOrder);
            Integer code = (Integer) parse.get("code");
            if (code == null) {
                return Result.error("支付系统返回异常");
            }
            String payUrl;
            switch (code) {
                case 200:
                    // 成功，获取支付链接
                    payUrl = (String) parse.get("result");

                    userAccountService.updateById(userAccount);

                    UserPolicy userPolicy = new UserPolicy();
                    userPolicy.setAccount(userAccount.getAccount());
                    userPolicy.setProductName(insuranceProduct.getProductName());
                    userPolicy.setUserId(userAccount.getId());
                    userPolicy.setProductId(insuranceProduct.getId());
                    userPolicy.setCoverageAmount(insuranceProduct.getCoverageAmount());
                    userPolicy.setPremium(insuranceProduct.getPremium());
                    userPolicy.setTerm(insuranceProduct.getTerm());
                    userPolicy.setName(dto.getName());
                    userPolicy.setGender(dto.getGender());
                    userPolicy.setPayStatus(1);
                    userPolicy.setOrderNo(orderNo);
                    userPolicy.setBirthDate(LocalDate.parse(dto.getBirthDate()));
                    userPolicy.setNumberDays(insuranceProduct.getNumberDays());
                    userPolicy.setOccupation(dto.getOccupation());
                    userPolicy.setIdCard(dto.getIdCard());
                    userPolicy.setPhone(dto.getPhone());
                    userPolicy.setPolicyNumber(generatePolicyNumber());
                    userPolicy.setPolicyStatus(UserPolicy.PolicyStatus.PENDING);
                    userPolicy.setCreatedAt(new Date());
                    userPolicy.setUpdatedAt(new Date());
                    userPolicy.setApprovalStatus(0);
                    userPolicy.setIsLifelong(insuranceProduct.getTerm() == 0 ? 0 : 1);

                    save(userPolicy);
                    extracted(userAccount, userPolicy.getId(), orderNo,PaymentRecord.PaymentStatus.PENDING.getCode(),userPolicy.getProductId(),userPolicy.getProductName());
                    return Result.success(payUrl);
                case 401:
                    extracted(userAccount, null, orderNo,PaymentRecord.PaymentStatus.FAILED.getCode(),null,"获取支付通道失败");
                    return Result.error("未授权访问支付系统");
                case 403:
                    extracted(userAccount, null, orderNo,PaymentRecord.PaymentStatus.FAILED.getCode(),null,"获取支付通道失败");
                    return Result.error("禁止访问支付系统");
                case 404:
                    extracted(userAccount, null, orderNo,PaymentRecord.PaymentStatus.FAILED.getCode(),null,"获取支付通道失败");
                    return Result.error("支付接口不存在");
                case 0014: // 注意：0014可能是字符串，需要根据实际情况处理
                    extracted(userAccount, null, orderNo,PaymentRecord.PaymentStatus.FAILED.getCode(),null,"获取支付通道失败");
                    return Result.error("当前支付不可用，请更换其他支付方式！");
                default:
                    extracted(userAccount, null, orderNo,PaymentRecord.PaymentStatus.FAILED.getCode(),null,"获取支付通道失败");
                    // 其他错误码
                    String message = (String) parse.get("message");
                    if (message != null && !message.isEmpty()) {
                        return Result.error("支付失败: " + message);
                    } else {
                        return Result.error("获取支付通道失败！");
                    }
            }
        }else{
            userAccount.setBalance(userAccount.getBalance().subtract(insuranceProduct.getPremium()));

            userAccountService.updateById(userAccount);

            String orderNo = generateOrderNo();

            UserPolicy userPolicy = new UserPolicy();
            userPolicy.setAccount(userAccount.getAccount());
            userPolicy.setProductName(insuranceProduct.getProductName());
            userPolicy.setUserId(userAccount.getId());
            userPolicy.setProductId(insuranceProduct.getId());
            userPolicy.setCoverageAmount(insuranceProduct.getCoverageAmount());
            userPolicy.setPremium(insuranceProduct.getPremium());
            userPolicy.setTerm(insuranceProduct.getTerm());
            userPolicy.setName(dto.getName());
            userPolicy.setGender(dto.getGender());
            userPolicy.setPayStatus(2);
            userPolicy.setOrderNo(orderNo);
            userPolicy.setBirthDate(LocalDate.parse(dto.getBirthDate()));
            userPolicy.setNumberDays(insuranceProduct.getNumberDays());
            userPolicy.setOccupation(dto.getOccupation());
            userPolicy.setIdCard(dto.getIdCard());
            userPolicy.setPhone(dto.getPhone());
            userPolicy.setPolicyNumber(generatePolicyNumber());
            userPolicy.setPolicyStatus(UserPolicy.PolicyStatus.PENDING);
            userPolicy.setCreatedAt(new Date());
            userPolicy.setUpdatedAt(new Date());
            userPolicy.setApprovalStatus(0);
            userPolicy.setIsLifelong(insuranceProduct.getTerm() == 0 ? 0 : 1);

            save(userPolicy);

            UserKyc userKyc = userKycService.getOne(new LambdaQueryWrapper<UserKyc>()
                    .eq(UserKyc::getAccount, userAccount.getAccount())
            );
            PaymentRecord paymentRecord = new PaymentRecord();
            paymentRecord.setUserId(userAccount.getId());
            paymentRecord.setPaymentStatus(PaymentRecord.PaymentStatus.PAID.getCode());
            paymentRecord.setProductId(userPolicy.getProductId());
            paymentRecord.setOrderId(userPolicy.getId());
            paymentRecord.setPayOrdeNo(orderNo);
            paymentRecord.setAccount(userAccount.getAccount());
            paymentRecord.setName(userKyc.getName());
            paymentRecord.setInvitationCode(userAccount.getInvitationCode());
            paymentRecord.setProductName(insuranceProduct.getProductName());
            paymentRecordService.save(paymentRecord);
            return Result.success();
        }
    }

    private void extracted(UserAccount userAccount, Integer userPolicyId, String orderNo,Integer payCode,Integer productId,String productName) {
        UserKyc userKyc = userKycService.getOne(new LambdaQueryWrapper<UserKyc>()
                .eq(UserKyc::getAccount, userAccount.getAccount())
        );
        PaymentRecord paymentRecord = new PaymentRecord();
        paymentRecord.setUserId(userAccount.getId());
        paymentRecord.setAccount(userAccount.getAccount());
        paymentRecord.setName(userKyc.getName());
        paymentRecord.setInvitationCode(userAccount.getInvitationCode());
        paymentRecord.setProductName(productName);
        paymentRecord.setPaymentStatus(payCode);
        paymentRecord.setProductId(productId);
        paymentRecord.setOrderId(userPolicyId);
        paymentRecord.setPayOrdeNo(orderNo);
        paymentRecordService.save(paymentRecord);
    }

    private final Random random = new Random();
    /**
     * 生成随机订单号 (格式: 时间戳 + 6位随机数)
     */
    public String generateOrderNo() {
        long timestamp = System.currentTimeMillis();
        int randomNum = random.nextInt(900000) + 100000; // 6位随机数
        return "ORDER" + timestamp + randomNum;
    }


    /**
     * 处理支付结果 - 这里您自己实现业务逻辑
     */
    private void verifySign(String orderNo, String status, String amount, Map<String, String> params) {
        // TODO: 在这里实现您的具体业务逻辑

        if ("2".equals(status)) {
            // 支付成功
            System.out.println("=== 支付成功 ===");
            System.out.println("订单号: " + orderNo);
            System.out.println("金额: " + amount);
            System.out.println("=================");

            // 示例业务逻辑：
            // 1. 更新订单状态为已支付
            // 2. 记录支付时间
            // 3. 发放商品或服务
            // 4. 发送通知等

        } else if ("3".equals(status)) {
            // 业务处理完成
            System.out.println("订单 " + orderNo + " 业务处理完成");

        } else {
            System.out.println("订单 " + orderNo + " 状态: " + status);
        }
    }

    // 使用原子长整型确保线程安全
    private static final AtomicLong lastTimestamp = new AtomicLong(0);
    private static final String PREFIX = "POL";

    /**
     * 基于时间毫秒生成唯一保单号
     * 格式: POL + 时间戳 + 随机数
     * 示例: POL16973512345671234
     */
    public String generatePolicyNumber() {
        long currentTimestamp = System.currentTimeMillis();
        long lastTime = lastTimestamp.get();

        // 如果时间戳相同，增加序列号
        if (currentTimestamp == lastTime) {
            // 等待下一毫秒
            while (currentTimestamp <= lastTime) {
                currentTimestamp = System.currentTimeMillis();
            }
        }
        lastTimestamp.set(currentTimestamp);

        // 生成4位随机数
        int randomNum = random.nextInt(10000);
        String randomStr = String.format("%04d", randomNum);

        return PREFIX + currentTimestamp + randomStr;
    }
}