package com.smartor.statemachine.handler.impl;

import com.ruoyi.common.utils.StringUtils;
import com.smartor.domain.PatMedInhosp;
import com.smartor.service.IPatMedInhospService;
import com.smartor.statemachine.handler.InhospStateHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * 出院状态处理器
 * 
 * @author smartor
 */
@Slf4j
@Component
public class DischargeHandler implements InhospStateHandler {

    @Autowired
    private IPatMedInhospService patMedInhospService;

    @Override
    public boolean handle(PatMedInhosp patMedInhosp) {
        log.info("【DischargeHandler】处理出院逻辑，serialnum={}, orgid={}", 
                patMedInhosp.getSerialnum(), patMedInhosp.getOrgid());

        PatMedInhosp query = new PatMedInhosp();
        query.setPatno(StringUtils.trim(patMedInhosp.getPatno()));
        query.setSerialnum(StringUtils.trim(patMedInhosp.getSerialnum()));
        query.setOrgid(StringUtils.trim(patMedInhosp.getOrgid()));

        // 1. 先检查是否已存在出院记录
        query.setInhospstate("1");
        List<PatMedInhosp> dischargedRecords = patMedInhospService.selectPatMedInhosp(query);
        if (CollectionUtils.isNotEmpty(dischargedRecords)) {
            log.warn("【DischargeHandler】出院记录已存在，跳过，serialnum={}, orgid={}", 
                    patMedInhosp.getSerialnum(), patMedInhosp.getOrgid());
            return false;
        }

        // 2. 检查是否存在入院记录（正常流程：必须先入院才能出院）
        query.setInhospstate("0");
        List<PatMedInhosp> inHospitalRecords = patMedInhospService.selectPatMedInhosp(query);
        if (CollectionUtils.isNotEmpty(inHospitalRecords)) {
            // 存在入院记录，执行状态更新为出院
            try {
                patMedInhosp.setInhospstate("1");
                patMedInhosp.setInhospid(inHospitalRecords.get(0).getInhospid());
                int updateCount = patMedInhospService.updatePatMedInhosp(patMedInhosp);
                log.info("【DischargeHandler】更新入院记录为出院状态，serialnum={}, updateCount={}", 
                        patMedInhosp.getSerialnum(), updateCount);
                return updateCount > 0;
            } catch (Exception e) {
                log.error("【DischargeHandler】更新入院记录失败：serialnum={}, orgid={}, 错误：{}", 
                        patMedInhosp.getSerialnum(), patMedInhosp.getOrgid(), e.getMessage(), e);
                return false;
            }
        }

        // 3. 检查是否存在预入院记录（异常流程：从预入院直接出院，可能是取消入院）
        query.setInhospstate("3");
        List<PatMedInhosp> preAdmissionRecords = patMedInhospService.selectPatMedInhosp(query);
        if (CollectionUtils.isNotEmpty(preAdmissionRecords)) {
            log.warn("【DischargeHandler】存在预入院记录但未入院，不允许直接出院，serialnum={}, orgid={}", 
                    patMedInhosp.getSerialnum(), patMedInhosp.getOrgid());
            // 根据业务需求决定是否允许从预入院直接出院，这里暂时不允许
            return false;
        }

        // 4. 不存在任何记录，异常情况：不应该没有入院记录就出院
        log.warn("【DischargeHandler】无入院记录，不允许直接插入出院记录，serialnum={}, orgid={}", 
                patMedInhosp.getSerialnum(), patMedInhosp.getOrgid());
        
        // 如果业务允许直接插入出院记录（如数据修复场景），可以取消注释以下代码
        /*
        try {
            patMedInhosp.setInhospstate("1");
            patMedInhospService.insertPatMedInhosp(patMedInhosp);
            log.info("【DischargeHandler】成功插入出院记录（无入院记录），serialnum={}", patMedInhosp.getSerialnum());
            return true;
        } catch (org.springframework.dao.DuplicateKeyException e) {
            log.warn("【DischargeHandler】出院记录已存在（并发插入），跳过：serialnum={}, orgid={}", 
                    patMedInhosp.getSerialnum(), patMedInhosp.getOrgid());
            return false;
        } catch (Exception e) {
            log.error("【DischargeHandler】插入出院记录失败：serialnum={}, orgid={}, 错误：{}", 
                    patMedInhosp.getSerialnum(), patMedInhosp.getOrgid(), e.getMessage(), e);
            return false;
        }
        */
        
        return false;
    }

    @Override
    public String getStateCode() {
        return "1";
    }
}