package com.klp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.collection.CollUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.klp.common.exception.ServiceException;
import com.klp.common.utils.StringUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.klp.domain.bo.WmsActualWarehouseBo;
import com.klp.domain.bo.WmsActualWarehouseHierarchyBo;
import com.klp.domain.bo.WmsActualWarehouseBatchGenerateBo;
import com.klp.domain.vo.WmsActualWarehouseTreeVo;
import com.klp.domain.vo.WmsActualWarehouseImportVo;
import com.klp.domain.vo.WmsActualWarehouseVo;
import com.klp.domain.WmsActualWarehouse;
import com.klp.mapper.WmsActualWarehouseMapper;
import com.klp.service.IWmsActualWarehouseService;

import java.util.*;
import java.util.stream.Collectors;

/**
 * 实际库区/库位自关联Service业务层处理
 *
 * @author klp
 * @date 2025-11-24
 */
@RequiredArgsConstructor
@Service
public class WmsActualWarehouseServiceImpl implements IWmsActualWarehouseService {

    private final WmsActualWarehouseMapper baseMapper;

    /**
     * 查询实际库区/库位自关联
     */
    @Override
    public WmsActualWarehouseVo queryById(Long actualWarehouseId){
        return baseMapper.selectVoById(actualWarehouseId);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public int batchGenerateLocations(WmsActualWarehouseBatchGenerateBo bo) {
        if (bo == null) {
            throw new ServiceException("参数不能为空");
        }
        Integer rows = bo.getRowCount();
        Integer cols = bo.getColumnCount();
        Integer layers = bo.getLayerCount();
        String prefix = bo.getPrefix();
        Long parentId = bo.getParentId();
        if (rows == null || cols == null || layers == null || rows < 1 || cols < 1 || layers < 1) {
            throw new ServiceException("行/列/层必须为正整数");
        }
        if (StringUtils.isBlank(prefix)) {
            throw new ServiceException("前缀不能为空");
        }

        // 预生成候选编码
        List<String> codes = new ArrayList<>(rows * cols * layers);
        for (int c = 1; c <= cols; c++) {
            for (int r = 1; r <= rows; r++) {
                String rStr = r < 10 ? ("0" + r) : String.valueOf(r);
                for (int l = 1; l <= layers; l++) {
                    String code = prefix + c + rStr + '-' + l;
                    codes.add(code);
                }
            }
        }

        // 去重：过滤同父级下已存在的编码
        List<WmsActualWarehouse> exists = baseMapper.selectList(Wrappers.<WmsActualWarehouse>lambdaQuery()
            .eq(WmsActualWarehouse::getParentId, parentId)
            .in(!codes.isEmpty(), WmsActualWarehouse::getActualWarehouseCode, codes));
        Set<String> existCodes = exists.stream().map(WmsActualWarehouse::getActualWarehouseCode).collect(Collectors.toSet());

        List<WmsActualWarehouse> toInsert = new ArrayList<>();
        for (String code : codes) {
            if (existCodes.contains(code)) {
                continue;
            }
            WmsActualWarehouse e = new WmsActualWarehouse();
            e.setParentId(parentId);
            e.setActualWarehouseType(2L);
            e.setActualWarehouseCode(code);
            e.setActualWarehouseName(code);
            e.setSortNo(0L);
            e.setIsEnabled(1);
            toInsert.add(e);
        }
        if (toInsert.isEmpty()) {
            return 0;
        }
        boolean ok = baseMapper.insertBatch(toInsert);
        if (!ok) {
            throw new ServiceException("批量生成失败");
        }
        return toInsert.size();
    }


    /**
     * 查询实际库区/库位自关联列表
     */
    @Override
    public List<WmsActualWarehouseVo> queryList(WmsActualWarehouseBo bo) {
        LambdaQueryWrapper<WmsActualWarehouse> lqw = buildQueryWrapper(bo);
        return baseMapper.selectVoList(lqw);
    }

    @Override
    public List<WmsActualWarehouseTreeVo> queryTree(WmsActualWarehouseBo bo) {
        if (bo == null) {
            bo = new WmsActualWarehouseBo();
        }
        LambdaQueryWrapper<WmsActualWarehouse> wrapper = Wrappers.lambdaQuery();
        wrapper.eq(StringUtils.isNotBlank(bo.getActualWarehouseCode()), WmsActualWarehouse::getActualWarehouseCode, bo.getActualWarehouseCode());
        wrapper.like(StringUtils.isNotBlank(bo.getActualWarehouseName()), WmsActualWarehouse::getActualWarehouseName, bo.getActualWarehouseName());
        wrapper.eq(bo.getActualWarehouseType() != null, WmsActualWarehouse::getActualWarehouseType, bo.getActualWarehouseType());
        wrapper.eq(bo.getIsEnabled() != null, WmsActualWarehouse::getIsEnabled, bo.getIsEnabled());
        wrapper.orderByAsc(WmsActualWarehouse::getSortNo, WmsActualWarehouse::getActualWarehouseId);
        List<WmsActualWarehouseVo> flatList = baseMapper.selectVoList(wrapper);
        Map<Long, WmsActualWarehouseTreeVo> nodeMap = new LinkedHashMap<>();
        flatList.forEach(item -> {
            WmsActualWarehouseTreeVo node = new WmsActualWarehouseTreeVo();
            BeanUtil.copyProperties(item, node);
            nodeMap.put(node.getActualWarehouseId(), node);
        });
        List<WmsActualWarehouseTreeVo> roots = new ArrayList<>();
        nodeMap.values().forEach(node -> {
            Long parentId = Optional.ofNullable(node.getParentId()).orElse(0L);
            if (parentId == 0 || !nodeMap.containsKey(parentId)) {
                roots.add(node);
            } else {
                nodeMap.get(parentId).getChildren().add(node);
            }
        });
        return roots;
    }
    @Override
    public List<WmsActualWarehouseTreeVo> queryTreeExcludeLevelThree(WmsActualWarehouseBo bo) {
        if (bo == null) {
            bo = new WmsActualWarehouseBo();
        }
        // 设置查询条件，排除三级节点（actualWarehouseType=3）
        LambdaQueryWrapper<WmsActualWarehouse> wrapper = Wrappers.lambdaQuery();
        wrapper.eq(StringUtils.isNotBlank(bo.getActualWarehouseCode()), WmsActualWarehouse::getActualWarehouseCode, bo.getActualWarehouseCode());
        wrapper.like(StringUtils.isNotBlank(bo.getActualWarehouseName()), WmsActualWarehouse::getActualWarehouseName, bo.getActualWarehouseName());
        wrapper.eq(bo.getActualWarehouseType() != null, WmsActualWarehouse::getActualWarehouseType, bo.getActualWarehouseType());
        wrapper.eq(bo.getIsEnabled() != null, WmsActualWarehouse::getIsEnabled, bo.getIsEnabled());
        // 排除三级节点（类型为3的节点）
        wrapper.ne(WmsActualWarehouse::getActualWarehouseType, 3);
        wrapper.orderByAsc(WmsActualWarehouse::getSortNo, WmsActualWarehouse::getActualWarehouseId);

        List<WmsActualWarehouseVo> flatList = baseMapper.selectVoList(wrapper);
        Map<Long, WmsActualWarehouseTreeVo> nodeMap = new LinkedHashMap<>();
        flatList.forEach(item -> {
            WmsActualWarehouseTreeVo node = new WmsActualWarehouseTreeVo();
            BeanUtil.copyProperties(item, node);
            nodeMap.put(node.getActualWarehouseId(), node);
        });

        List<WmsActualWarehouseTreeVo> roots = new ArrayList<>();
        nodeMap.values().forEach(node -> {
            Long parentId = Optional.ofNullable(node.getParentId()).orElse(0L);
            if (parentId == 0 || !nodeMap.containsKey(parentId)) {
                roots.add(node);
            } else {
                nodeMap.get(parentId).getChildren().add(node);
            }
        });
        return roots;
    }

    private LambdaQueryWrapper<WmsActualWarehouse> buildQueryWrapper(WmsActualWarehouseBo bo) {
        Map<String, Object> params = bo.getParams();
        LambdaQueryWrapper<WmsActualWarehouse> lqw = Wrappers.lambdaQuery();
        lqw.eq(bo.getParentId() != null, WmsActualWarehouse::getParentId, bo.getParentId());
        lqw.eq(StringUtils.isNotBlank(bo.getActualWarehouseCode()), WmsActualWarehouse::getActualWarehouseCode, bo.getActualWarehouseCode());
        lqw.like(StringUtils.isNotBlank(bo.getActualWarehouseName()), WmsActualWarehouse::getActualWarehouseName, bo.getActualWarehouseName());
        lqw.eq(bo.getActualWarehouseType() != null, WmsActualWarehouse::getActualWarehouseType, bo.getActualWarehouseType());
        lqw.eq(bo.getSortNo() != null, WmsActualWarehouse::getSortNo, bo.getSortNo());
        lqw.eq(bo.getIsEnabled() != null, WmsActualWarehouse::getIsEnabled, bo.getIsEnabled());
        return lqw;
    }

    /**
     * 新增实际库区/库位自关联
     */
    @Override
    public Boolean insertByBo(WmsActualWarehouseBo bo) {
        WmsActualWarehouse add = BeanUtil.toBean(bo, WmsActualWarehouse.class);
        validEntityBeforeSave(add);
        boolean flag = baseMapper.insert(add) > 0;
        if (flag) {
            bo.setActualWarehouseId(add.getActualWarehouseId());
        }
        return flag;
    }

    /**
     * 修改实际库区/库位自关联
     */
    @Override
    public Boolean updateByBo(WmsActualWarehouseBo bo) {
        WmsActualWarehouse update = BeanUtil.toBean(bo, WmsActualWarehouse.class);
        validEntityBeforeSave(update);
        return baseMapper.updateById(update) > 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public List<Long> createHierarchy(WmsActualWarehouseHierarchyBo bo) {
        if (bo.getLevels() == null || bo.getLevels().isEmpty()) {
            throw new ServiceException("层级数据不能为空");
        }
        List<WmsActualWarehouseHierarchyBo.HierarchyLevel> sortedLevels = bo.getLevels().stream()
            .sorted(Comparator.comparing(WmsActualWarehouseHierarchyBo.HierarchyLevel::getLevel))
            .collect(Collectors.toList());
        Long parentId = 0L;
        List<Long> createdIds = new ArrayList<>();
        for (WmsActualWarehouseHierarchyBo.HierarchyLevel level : sortedLevels) {
            Integer levelValue = level.getLevel();
            if (levelValue == null || levelValue < 1 || levelValue > 3) {
                throw new ServiceException("层级必须在1-3之间");
            }
            if (level.getActualWarehouseId() != null) {
                WmsActualWarehouse existing = baseMapper.selectById(level.getActualWarehouseId());
                if (existing == null) {
                    throw new ServiceException("指定的节点不存在：" + level.getActualWarehouseId());
                }
                if (!Objects.equals(Optional.ofNullable(existing.getParentId()).orElse(0L), parentId)) {
                    throw new ServiceException("节点不属于当前父级，无法复用");
                }
                parentId = existing.getActualWarehouseId();
                continue;
            }
            if (StringUtils.isBlank(level.getActualWarehouseCode()) || StringUtils.isBlank(level.getActualWarehouseName())) {
                throw new ServiceException("编码与名称不能为空");
            }
            WmsActualWarehouse duplicate = baseMapper.selectOne(Wrappers.<WmsActualWarehouse>lambdaQuery()
                .eq(WmsActualWarehouse::getParentId, parentId)
                .and(wrapper -> wrapper.eq(WmsActualWarehouse::getActualWarehouseCode, level.getActualWarehouseCode())
                    .or()
                    .eq(WmsActualWarehouse::getActualWarehouseName, level.getActualWarehouseName())));
            if (duplicate != null) {
                parentId = duplicate.getActualWarehouseId();
                continue;
            }
            WmsActualWarehouse entity = new WmsActualWarehouse();
            entity.setParentId(parentId);
            entity.setActualWarehouseType(levelValue.longValue());
            entity.setActualWarehouseCode(level.getActualWarehouseCode());
            entity.setActualWarehouseName(level.getActualWarehouseName());
            entity.setSortNo(Optional.ofNullable(level.getSortNo()).orElse(0L));
            entity.setIsEnabled(Optional.ofNullable(level.getIsEnabled()).orElse(1));
            entity.setRemark(level.getRemark());
            baseMapper.insert(entity);
            parentId = entity.getActualWarehouseId();
            createdIds.add(parentId);
        }
        return createdIds;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void importHierarchy(List<WmsActualWarehouseImportVo> importList) {
        if (CollUtil.isEmpty(importList)) {
            throw new ServiceException("导入数据不能为空");
        }
        for (WmsActualWarehouseImportVo row : importList) {
            List<WmsActualWarehouseHierarchyBo.HierarchyLevel> levels = new ArrayList<>();
            appendLevel(levels, 1, row.getLevelOneCode(), row.getLevelOneName(), row.getLevelOneSort());
            appendLevel(levels, 2, row.getLevelTwoCode(), row.getLevelTwoName(), row.getLevelTwoSort());
            appendLevel(levels, 3, row.getLevelThreeCode(), row.getLevelThreeName(), row.getLevelThreeSort());
            if (levels.isEmpty()) {
                continue;
            }
            WmsActualWarehouseHierarchyBo bo = new WmsActualWarehouseHierarchyBo();
            bo.setLevels(levels);
            createHierarchy(bo);
        }
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(WmsActualWarehouse entity){
        //TODO 做一些数据校验,如唯一约束
    }

    private void appendLevel(List<WmsActualWarehouseHierarchyBo.HierarchyLevel> levels,
                             int level,
                             String code,
                             String name,
                             Long sortNo) {
        if (StringUtils.isBlank(code) || StringUtils.isBlank(name)) {
            return;
        }
        WmsActualWarehouseHierarchyBo.HierarchyLevel item = new WmsActualWarehouseHierarchyBo.HierarchyLevel();
        item.setLevel(level);
        item.setActualWarehouseCode(code.trim());
        item.setActualWarehouseName(name.trim());
        item.setSortNo(Optional.ofNullable(sortNo).orElse(0L));
        item.setIsEnabled(1);
        levels.add(item);
    }

    /**
     * 批量删除实际库区/库位自关联
     */
    @Override
    public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
        if(isValid){
            //TODO 做一些业务上的校验,判断是否需要校验
        }
        return baseMapper.deleteBatchIds(ids) > 0;
    }


}