package cn.iocoder.yudao.module.hrm.service.approval.listener;

import cn.iocoder.yudao.module.bpm.api.event.BpmProcessInstanceStatusEvent;
import cn.iocoder.yudao.module.hrm.dal.dataobject.approval.HrmResignationApplicationDO;
import cn.iocoder.yudao.module.hrm.dal.dataobject.employee.HrmEmployeeDO;
import cn.iocoder.yudao.module.hrm.dal.mysql.approval.HrmResignationApplicationMapper;
import cn.iocoder.yudao.module.hrm.dal.mysql.employee.HrmEmployeeMapper;
import cn.iocoder.yudao.module.hrm.enums.HrmAuditStatusEnum;
import cn.iocoder.yudao.module.hrm.service.approval.HrmResignationApplicationService;
import cn.iocoder.yudao.module.hrm.util.HrmAuditStatusUtils;
import jakarta.annotation.Resource;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;

/**
 * 离职申请审批的结果监听器实现类
 *
 * @author 超级管理员
 */
@Component
@Slf4j
public class HrmResignationApplicationStatusListener implements ApplicationListener<BpmProcessInstanceStatusEvent> {

    /**
     * 员工状态：离职
     */
    private static final Integer EMPLOYEE_STATUS_RESIGNED = 3;

    @Resource
    private HrmResignationApplicationService resignationApplicationService;
    @Resource
    private HrmResignationApplicationMapper resignationApplicationMapper;
    @Resource
    private HrmEmployeeMapper employeeMapper;

    @Override
    public void onApplicationEvent(BpmProcessInstanceStatusEvent event) {
        // 通过 businessKey 查询离职申请
        Long applicationId;
        try {
            applicationId = Long.parseLong(event.getBusinessKey());
        } catch (NumberFormatException e) {
            return;
        }

        HrmResignationApplicationDO application = resignationApplicationMapper.selectById(applicationId);
        if (application == null) {
            return;
        }

        // 只有审批中状态的离职申请才处理
        if (!HrmAuditStatusEnum.PROCESS.getStatus().equals(application.getStatus())) {
            log.warn("[onApplicationEvent] 离职申请({}) 不处于审批中状态，当前状态: {}", applicationId, application.getStatus());
            return;
        }

        log.info("[onApplicationEvent] 离职申请({}) 审批状态更新: {}", applicationId, event.getStatus());
        // 更新审批状态
        Integer auditStatus = HrmAuditStatusUtils.convertBpmResultToAuditStatus(event.getStatus());
        resignationApplicationService.updateResignationApplicationAuditStatus(applicationId, auditStatus);
        // 审批通过：回写员工主档（状态=离职，离职日期 = 实际离职日期或预计离职日期）
        if (HrmAuditStatusEnum.APPROVE.getStatus().equals(auditStatus)) {
            writeBackEmployee(application);
        }
    }

    private void writeBackEmployee(HrmResignationApplicationDO application) {
        HrmEmployeeDO employee = employeeMapper.selectByUserId(application.getUserId());
        if (employee == null) {
            log.warn("[writeBackEmployee] 离职申请({}) 用户({}) 未找到员工档案，跳过回写", application.getId(), application.getUserId());
            return;
        }
        java.time.LocalDate leaveDate = application.getActualDate() != null
                ? application.getActualDate() : application.getExpectedDate();
        employeeMapper.updateById(HrmEmployeeDO.builder()
                .id(employee.getId())
                .employeeStatus(EMPLOYEE_STATUS_RESIGNED)
                .leaveDate(leaveDate)
                .build());
    }

}