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package com.ruoyi.web.controller.product;
 
import cn.hutool.core.util.ObjectUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.domain.R;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.im.comm.Result;
import com.ruoyi.im.service.MedicalInsuranceAccountService;
import com.ruoyi.system.domain.MedicalInsuranceAccount;
import com.ruoyi.system.domain.UserPolicy;
import com.ruoyi.system.domain.dto.UserPolicyDto;
import com.ruoyi.im.service.UserPolicyService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.interceptor.TransactionAspectSupport;
import org.springframework.web.bind.annotation.*;
 
import javax.validation.Valid;
import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
 
@RestController
@RequestMapping("/userPolicy")
public class UserPolicyController {
 
    @Autowired
    UserPolicyService userPolicyService;
 
    @Autowired
    MedicalInsuranceAccountService medicalInsuranceAccountService;
 
    /**
     * 保险购买申请
     */
    @PostMapping("/purchaseApplication")
    public Result purchaseApplication(UserPolicyDto dto) {
        try {
            return userPolicyService.purchaseApplication(dto);
        }catch (Exception e){
            e.printStackTrace();
            return Result.error("购买失败");
        }
    }
 
    /**
     * 根据用户id查询保单
     */
    @GetMapping("/getPolicyById")
    public Result getPolicyById(@RequestParam(value = "id") Integer id) {
        try {
            List<UserPolicy> list = userPolicyService.list(new LambdaQueryWrapper<UserPolicy>().eq(UserPolicy::getUserId, id));
            return Result.success(list);
        }catch (Exception e){
            e.printStackTrace();
            return Result.error("查询失败");
        }
    }
 
    /**
     * 保单审批
     */
    @GetMapping("/examine")
    @Transactional
    public AjaxResult examine(@RequestParam(value = "id") Integer id,
                              @RequestParam(value = "approvalStatus") Integer approvalStatus,
                              @RequestParam(value = "message",required = false) String message) {
        try {
            UserPolicy userPolicy = userPolicyService.getById(id);
            if(ObjectUtil.isEmpty(userPolicy)){
                return AjaxResult.error("订单不存在");
            }
            if(userPolicy.getApprovalStatus() != 0){
                return AjaxResult.error("订单已审批!");
            }
            if(approvalStatus == 2 && StringUtils.isEmpty(message)){
                return AjaxResult.error("驳回理由不能为空!");
            }
 
            //计算到期时间
            LocalDate expirationTime = calculateInsuranceEndDate(LocalDate.now(), userPolicy.getTerm());
 
            userPolicy.setApprovalStatus(approvalStatus);
            userPolicy.setMessage(message);
            userPolicy.setStartDate(LocalDate.now());
            userPolicy.setEndDate(expirationTime);
            userPolicy.setPolicyStatus(UserPolicy.PolicyStatus.ACTIVE);
            userPolicy.setUpdatedAt(new Date());
            userPolicyService.updateById(userPolicy);
 
            MedicalInsuranceAccount medicalInsuranceAccount = new MedicalInsuranceAccount();
            medicalInsuranceAccount.setUserId(userPolicy.getUserId());
            medicalInsuranceAccount.setPolicyId(userPolicy.getId());
            medicalInsuranceAccount.setProductId(userPolicy.getProductId());
            medicalInsuranceAccount.setTotalQuota(userPolicy.getCoverageAmount());
            medicalInsuranceAccount.setRemainingBalance(BigDecimal.ZERO);
            medicalInsuranceAccount.setAmountClaimed(userPolicy.getCoverageAmount());
            medicalInsuranceAccount.setAlreadyReceived(BigDecimal.ZERO);
            medicalInsuranceAccount.setAmountAlreadyUsed(BigDecimal.ZERO);
            medicalInsuranceAccount.setEffectiveDate(userPolicy.getStartDate());
            medicalInsuranceAccount.setExpiryDate(userPolicy.getEndDate());
            medicalInsuranceAccount.setAccountStatus(MedicalInsuranceAccount.AccountStatus.ACTIVE);
            medicalInsuranceAccount.setCreatedAt(new Date());
            medicalInsuranceAccount.setUpdatedAt(new Date());
            medicalInsuranceAccountService.save(medicalInsuranceAccount);
            return AjaxResult.success("审批成功");
        }catch (Exception e){
            e.printStackTrace();
            // 手动设置回滚
            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            return AjaxResult.error("审批失败!");
        }
    }
 
    /**
     * 计算保险到期日
     * @param startDate 保险开始日期
     * @param termYears 保险年限
     * @return 保险到期日期
     */
    public static LocalDate calculateInsuranceEndDate(LocalDate startDate, int termYears) {
        return calculateDateAfterYears(startDate, termYears);
    }
 
    /**
     * 根据基准日期和年限推算日期
     */
    public static LocalDate calculateDateAfterYears(LocalDate baseDate, int years) {
        validateBaseDate(baseDate);
        return baseDate.plusYears(years);
    }
 
    /**
     * 验证基准日期
     */
    private static void validateBaseDate(LocalDate baseDate) {
        if (baseDate == null) {
            throw new IllegalArgumentException("基准日期不能为null");
        }
    }
}