package com.zt.plat.module.erp.service.erp;

import cn.hutool.core.collection.CollUtil;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.xxl.job.core.handler.annotation.XxlJob;
import com.zt.plat.framework.common.pojo.PageResult;
import com.zt.plat.framework.common.util.object.BeanUtils;
import com.zt.plat.framework.mybatis.core.query.LambdaQueryWrapperX;
import com.zt.plat.module.erp.utils.ErpConfig;
import com.zt.plat.module.erp.utils.MyRedisConfig;
import com.zt.plat.module.erp.enums.OftenEnum;
import com.zt.plat.module.erp.controller.admin.erp.vo.ErpAssetPageReqVO;
import com.zt.plat.module.erp.controller.admin.erp.vo.ErpAssetRespVO;
import com.zt.plat.module.erp.controller.admin.erp.vo.ErpAssetSaveReqVO;
import com.zt.plat.module.erp.dal.dataobject.erp.ErpAssetDO;
import com.zt.plat.module.erp.dal.mysql.erp.ErpAssetMapper;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import static com.zt.plat.framework.common.exception.util.ServiceExceptionUtil.exception;
import static com.zt.plat.module.erp.enums.ErrorCodeConstants.ERP_ASSET_NOT_EXISTS;
import static com.zt.plat.module.erp.enums.ErrorCodeConstants.ERP_COMPANY_REDIS_NOT_EXISTS;
import static dm.jdbc.util.DriverUtil.log;

/**
 * ERP资产卡片 Service 实现类
 *
 * @author 后台管理
 */
@Service
@Validated
public class ErpAssetServiceImpl implements ErpAssetService {

    @Resource
    private ErpAssetMapper erpAssetMapper;

    @Resource
    private MyRedisConfig myRedisConfig;
    @Resource
    private ErpConfig erpConfig;

    @Override
    public ErpAssetRespVO createErpAsset(ErpAssetSaveReqVO createReqVO) {
        // 插入
        ErpAssetDO erpAsset = BeanUtils.toBean(createReqVO, ErpAssetDO.class);
        erpAssetMapper.insert(erpAsset);
        // 返回
        return BeanUtils.toBean(erpAsset, ErpAssetRespVO.class);
    }

    @Override
    public void updateErpAsset(ErpAssetSaveReqVO updateReqVO) {
        // 校验存在
        validateErpAssetExists(updateReqVO.getId());
        // 更新
        ErpAssetDO updateObj = BeanUtils.toBean(updateReqVO, ErpAssetDO.class);
        erpAssetMapper.updateById(updateObj);
    }

    @Override
    public void deleteErpAsset(Long id) {
        // 校验存在
        validateErpAssetExists(id);
        // 删除
        erpAssetMapper.deleteById(id);
    }

    @Override
    public void deleteErpAssetListByIds(List<Long> ids) {
        // 校验存在
        validateErpAssetExists(ids);
        // 删除
        erpAssetMapper.deleteByIds(ids);
    }

    private void validateErpAssetExists(List<Long> ids) {
        List<ErpAssetDO> list = erpAssetMapper.selectByIds(ids);
        if (CollUtil.isEmpty(list) || list.size() != ids.size()) {
            throw exception(ERP_ASSET_NOT_EXISTS);
        }
    }

    private void validateErpAssetExists(Long id) {
        if (erpAssetMapper.selectById(id) == null) {
            throw exception(ERP_ASSET_NOT_EXISTS);
        }
    }

    @Override
    public ErpAssetDO getErpAsset(Long id) {
        return erpAssetMapper.selectById(id);
    }

    @Override
    public PageResult<ErpAssetDO> getErpAssetPage(ErpAssetPageReqVO pageReqVO) {
        return erpAssetMapper.selectPage(pageReqVO);
    }

    @Override
    @Transactional
    @XxlJob("getErpAssetTask")
    public void callErpRfcInterface() {
        OftenEnum.FuncnrEnum funcnrEnum = OftenEnum.FuncnrEnum.资产卡片;
        String funcnr = funcnrEnum.getFuncnr();
        String key = "erpMap" + funcnr;
        if (myRedisConfig.getRedisCacheMap(key).isEmpty()) {
            initializeMap(key);
        }
        // 构建req参数
        Map<String, Object> req = new HashMap<>();
        JSONArray dataArrayALL = new JSONArray();
        String companyKey = "erpMap" + OftenEnum.FuncnrEnum.公司代码.getFuncnr();
        Map<String, Long> redisCache = myRedisConfig.getRedisCacheMap(companyKey);
        if (CollUtil.isEmpty(redisCache)) {
            throw exception(ERP_COMPANY_REDIS_NOT_EXISTS);
        }
        for (String number : redisCache.keySet()) {
            req.put("BUKRS", number);
            // 1. 调用ERP接口获取数据
            Map<String, Object> dataFromERP = erpConfig.fetchDataFromERP(funcnr, req);
            JSONArray dataArray = (JSONArray) dataFromERP.get("E_RESP");
            if (dataArray == null) {
                continue;
            }
            dataArrayALL.addAll(dataArray);
        }
        if (CollUtil.isEmpty(dataArrayALL)) {
            throw exception(ERP_ASSET_NOT_EXISTS);
        }

        // 2. 处理公司数据，区分新增和更新
        ProcessingResult result = processData(dataArrayALL, funcnrEnum);

        // 3. 批量保存数据
        saveData(result);
    }

    /**
     * 处理数据，区分新增和更新
     */
    private ProcessingResult processData(JSONArray dataArray, OftenEnum.FuncnrEnum funcnrEnum) {
        String key = "erpMap" + funcnrEnum.getFuncnr();
        Map<String, Long> numbers = myRedisConfig.getRedisCacheMap(key);
        List<ErpAssetDO> toUpdate = new ArrayList<>();
        List<ErpAssetDO> toInsert = new ArrayList<>();

        List<String> dataArrayNumbers = new ArrayList<>();
        for (int i = 0; i < dataArray.size(); i++) {
            JSONObject dataJson = dataArray.getJSONObject(i);
            if (dataJson != null) {
                ErpAssetDO DO = new ErpAssetDO();
                DO.setCompanyNumber(dataJson.getString("BUKRS").trim());
                DO.setMainAssetNumber(dataJson.getString("ANLN1").trim());
                if (!dataJson.getString("ERDAT").equals("0000-00-00")) {
                    DO.setRecordCreateDate(LocalDateTime.parse(dataJson.getString("ERDAT") + "T00:00:00"));
                }
                DO.setUpdateUserName(dataJson.getString("ERNAM"));
                DO.setAssetTypeNumber(dataJson.getString("ANLKL"));
                DO.setAssetTypeName(dataJson.getString("TXK20"));
                if (!dataJson.getString("AKTIV").equals("0000-00-00")) {
                    DO.setAssetDate(LocalDateTime.parse(dataJson.getString("AKTIV") + "T00:00:00"));
                }
                DO.setUom(dataJson.getString("MEINS"));
                DO.setQuantity(dataJson.getBigDecimal("MENGE"));
                DO.setAssetDescription(dataJson.getString("TXT50"));
                DO.setAssetDescriptionAttach(dataJson.getString("TXA50"));
                if (!dataJson.getString("AFABG").equals("0000-00-00")) {
                    DO.setDepreciationStartDate(LocalDateTime.parse(dataJson.getString("AFABG") + "T00:00:00"));
                }
                DO.setPlanYearDate(dataJson.getString("NDJAR"));
                DO.setCostcenterNumber(dataJson.getString("KOSTL"));
                DO.setDutyCostcenterNumber(dataJson.getString("KOSTLV"));
                String number = DO.getCompanyNumber() + "-" + DO.getMainAssetNumber();
                if (numbers.get(number) != null) {
                    // 更新
                    DO.setId(numbers.get(number));
                    toUpdate.add(DO);
                } else {
                    // 新增
                    toInsert.add(DO);
                }
                dataArrayNumbers.add(number);
            }
        }
        // 过滤出numbers中有，但dataArray中KOSTL没有的记录，即为需要删除的数据
        Map<String, Long> deleteNumbers = new HashMap<>();
        for (String number : numbers.keySet()) {
            if (!dataArrayNumbers.contains(number)) {
                deleteNumbers.put(number, numbers.get(number));
            }
        }
        return new ProcessingResult(toUpdate, toInsert, deleteNumbers, key);
    }

    /**
     * 批量保存数据
     */
    private void saveData(ProcessingResult result) {
        // 批量新增和更新
        if (!result.toInsert.isEmpty()) {
            erpAssetMapper.insertBatch(result.toInsert);
            // 批量查询刚插入数据的id，提升效率
            List<ErpAssetDO> insertedRecords = erpAssetMapper.selectList(
                    new LambdaQueryWrapperX<ErpAssetDO>()
                            .in(ErpAssetDO::getCompanyNumber, result.toInsert.stream().map(ErpAssetDO::getCompanyNumber).collect(Collectors.toList()))
                            .in(ErpAssetDO::getMainAssetNumber, result.toInsert.stream().map(ErpAssetDO::getMainAssetNumber).collect(Collectors.toList()))
            );
            Map<String, Long> numberIdMap = insertedRecords.stream()
                    .collect(Collectors.toMap(asset -> asset.getCompanyNumber() + "-" + asset.getMainAssetNumber(), ErpAssetDO::getId,(existing, replacement) -> replacement));
            myRedisConfig.addRedisCacheMap(result.key, numberIdMap);
        }
        if (!result.toUpdate.isEmpty()) {
            erpAssetMapper.updateBatch(result.toUpdate);
        }
        if (!result.deleteNumbers.isEmpty()) {
            // 使用流式处理和批处理优化删除逻辑
            List<Long> idsToDelete = new ArrayList<>(result.deleteNumbers.values());
            erpAssetMapper.deleteByIds(idsToDelete);
            myRedisConfig.deleteRedisCacheMap(result.key, new ArrayList<>(result.deleteNumbers.keySet()));
        }
    }

    /**
     * 数据处理结果封装类
     */
    private static class ProcessingResult {
        private final List<ErpAssetDO> toUpdate;
        private final List<ErpAssetDO> toInsert;
        private final Map<String, Long> deleteNumbers;
        private final String key;

        public ProcessingResult(List<ErpAssetDO> toUpdate, List<ErpAssetDO> toInsert, Map<String, Long> deleteNumbers, String key) {
            this.toUpdate = toUpdate;
            this.toInsert = toInsert;
            this.deleteNumbers = deleteNumbers;
            this.key = key;
        }
    }

    private void initializeMap(String key) {
        List<ErpAssetDO> assets = erpAssetMapper.selectList(new LambdaQueryWrapperX<ErpAssetDO>());
        Map<String, Long> existingNumbers = new HashMap<>();
        for (ErpAssetDO asset : assets) {
            String mapKey = asset.getCompanyNumber() + "-" + asset.getMainAssetNumber();
            existingNumbers.put(mapKey, asset.getId());
        }
        myRedisConfig.addRedisCacheMap(key, existingNumbers);
    }

}