/*
 * Copyright © 2026 Qiantong Technology Co., Ltd.
 * qModel Model Platform(Open Source Edition)
 *  *
 * License:
 * Released under the Apache License, Version 2.0.
 * You may use, modify, and distribute this software for commercial purposes
 * under the terms of the License.
 *  *
 * Special Notice:
 * All derivative versions are strictly prohibited from modifying or removing
 * the default system logo and copyright information.
 * For brand customization, please apply for brand customization authorization via official channels.
 *  *
 * More information: https://qmodel.qiantong.tech/business.html
 *  *
 * ============================================================================
 *  *
 * 版权所有 © 2026 江苏千桐科技有限公司
 * qModel 模型平台（开源版）
 *  *
 * 许可协议：
 * 本项目基于 Apache License 2.0 开源协议发布，
 * 允许在遵守协议的前提下进行商用、修改和分发。
 *  *
 * 特别说明：
 * 所有衍生版本不得修改或移除系统默认的 LOGO 和版权信息；
 * 如需定制品牌，请通过官方渠道申请品牌定制授权。
 *  *
 * 更多信息请访问：https://qmodel.qiantong.tech/business.html
 */

package tech.qiantong.qmodel.module.model.service.history.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tech.qiantong.qmodel.common.core.page.PageResult;
import tech.qiantong.qmodel.common.exception.ServiceException;
import tech.qiantong.qmodel.common.utils.StringUtils;
import tech.qiantong.qmodel.common.utils.object.BeanUtils;
import tech.qiantong.qmodel.module.model.controller.admin.history.vo.ModelHistoryPageReqVO;
import tech.qiantong.qmodel.module.model.controller.admin.history.vo.ModelHistoryRespVO;
import tech.qiantong.qmodel.module.model.controller.admin.history.vo.ModelHistorySaveReqVO;
import tech.qiantong.qmodel.module.model.dal.dataobject.history.ModelHistoryDO;
import tech.qiantong.qmodel.module.model.dal.mapper.history.ModelHistoryMapper;
import tech.qiantong.qmodel.module.model.service.history.IModelHistoryService;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * 模型历史Service业务层处理
 *
 * @author qModel
 * @date 2026-01-09
 */
@Slf4j
@Service
@Transactional(rollbackFor = Exception.class)
public class ModelHistoryServiceImpl extends ServiceImpl<ModelHistoryMapper, ModelHistoryDO> implements IModelHistoryService {
    @Resource
    private ModelHistoryMapper modelHistoryMapper;

    @Override
    public PageResult<ModelHistoryDO> getModelHistoryPage(ModelHistoryPageReqVO pageReqVO) {
        return modelHistoryMapper.selectPage(pageReqVO);
    }

    @Override
    public Long createModelHistory(ModelHistorySaveReqVO createReqVO) {
        ModelHistoryDO dictType = BeanUtils.toBean(createReqVO, ModelHistoryDO.class);
        modelHistoryMapper.insert(dictType);
        return dictType.getId();
    }

    @Override
    public int updateModelHistory(ModelHistorySaveReqVO updateReqVO) {
        // 相关校验

        // 更新模型历史
        ModelHistoryDO updateObj = BeanUtils.toBean(updateReqVO, ModelHistoryDO.class);
        return modelHistoryMapper.updateById(updateObj);
    }

    @Override
    public int removeModelHistory(Collection<Long> idList) {
        // 批量删除模型历史
        return modelHistoryMapper.deleteBatchIds(idList);
    }

    @Override
    public ModelHistoryDO getModelHistoryById(Long id) {
        return modelHistoryMapper.selectById(id);
    }

    @Override
    public List<ModelHistoryDO> getModelHistoryList() {
        return modelHistoryMapper.selectList();
    }


    @Override
    public Map<Long, ModelHistoryDO> getModelHistoryMap() {
        List<ModelHistoryDO> modelHistoryList = modelHistoryMapper.selectList();
        return modelHistoryList.stream()
                .collect(Collectors.toMap(
                        ModelHistoryDO::getId,
                        modelHistoryDO -> modelHistoryDO,
                        // 保留已存在的值
                        (existing, replacement) -> existing
                ));
    }

    /**
     * 创建模型历史记录的便捷方法
     *
     * @param modelId 模型ID
     * @param modelName 模型名称
     * @param context 操作内容
     * @param modelVersion 模型版本
     * @param updatorId 更新人ID
     * @param updateBy 更新人姓名
     * @return 模型历史编号
     */
    @Override
    public Long createModelHistory(Long modelId, String modelName, String context, String modelVersion, Long updatorId, String updateBy) {
        ModelHistorySaveReqVO modelHistory = new ModelHistorySaveReqVO();
        modelHistory.setModelId(modelId);
        modelHistory.setModelName(modelName);
        modelHistory.setContext(context);
        modelHistory.setModelVersion(modelVersion);
        modelHistory.setUpdatorId(updatorId);
        modelHistory.setUpdateBy(updateBy);
        return createModelHistory(modelHistory);
    }

    /**
     * 导入模型历史数据
     *
     * @param importExcelList 模型历史数据列表
     * @param isUpdateSupport 是否更新支持，如果已存在，则进行更新数据
     * @param operName        操作用户
     * @return 结果
     */
    @Override
    public String importModelHistory(List<ModelHistoryRespVO> importExcelList, boolean isUpdateSupport, String operName) {
        if (StringUtils.isNull(importExcelList) || importExcelList.size() == 0) {
            throw new ServiceException("导入数据不能为空！");
        }

        int successNum = 0;
        int failureNum = 0;
        List<String> successMessages = new ArrayList<>();
        List<String> failureMessages = new ArrayList<>();

        for (ModelHistoryRespVO respVO : importExcelList) {
            try {
                ModelHistoryDO modelHistoryDO = BeanUtils.toBean(respVO, ModelHistoryDO.class);
                Long modelHistoryId = respVO.getId();
                if (isUpdateSupport) {
                    if (modelHistoryId != null) {
                        ModelHistoryDO existingModelHistory = modelHistoryMapper.selectById(modelHistoryId);
                        if (existingModelHistory != null) {
                            modelHistoryMapper.updateById(modelHistoryDO);
                            successNum++;
                            successMessages.add("数据更新成功，ID为 " + modelHistoryId + " 的模型历史记录。");
                        } else {
                            failureNum++;
                            failureMessages.add("数据更新失败，ID为 " + modelHistoryId + " 的模型历史记录不存在。");
                        }
                    } else {
                        failureNum++;
                        failureMessages.add("数据更新失败，某条记录的ID不存在。");
                    }
                } else {
                    QueryWrapper<ModelHistoryDO> queryWrapper = new QueryWrapper<>();
                    queryWrapper.eq("id", modelHistoryId);
                    ModelHistoryDO existingModelHistory = modelHistoryMapper.selectOne(queryWrapper);
                    if (existingModelHistory == null) {
                        modelHistoryMapper.insert(modelHistoryDO);
                        successNum++;
                        successMessages.add("数据插入成功，ID为 " + modelHistoryId + " 的模型历史记录。");
                    } else {
                        failureNum++;
                        failureMessages.add("数据插入失败，ID为 " + modelHistoryId + " 的模型历史记录已存在。");
                    }
                }
            } catch (Exception e) {
                failureNum++;
                String errorMsg = "数据导入失败，错误信息：" + e.getMessage();
                failureMessages.add(errorMsg);
                log.error(errorMsg, e);
            }
        }
        StringBuilder resultMsg = new StringBuilder();
        if (failureNum > 0) {
            resultMsg.append("很抱歉，导入失败！共 ").append(failureNum).append(" 条数据格式不正确，错误如下：");
            resultMsg.append("<br/>").append(String.join("<br/>", failureMessages));
            throw new ServiceException(resultMsg.toString());
        } else {
            resultMsg.append("恭喜您，数据已全部导入成功！共 ").append(successNum).append(" 条。");
        }
        return resultMsg.toString();
    }
}
