package com.ruoyi.system.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.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.core.domain.entity.SysDept;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.system.dto.asset.AssetWarehouseDTO;
import com.ruoyi.system.mapper.AssetWarehouseMapper;
import com.ruoyi.system.mapper.SysDeptMapper;
import com.ruoyi.system.model.AssetInventoryRecord;
import com.ruoyi.system.model.AssetWarehouse;
import com.ruoyi.system.query.AssetWarehousePageQuery;
import com.ruoyi.system.service.AssetInventoryRecordService;
import com.ruoyi.system.service.AssetWarehouseService;
import com.ruoyi.system.vo.asset.AssetWarehouseVO;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;

/**
 * <p>
 * 仓库信息表 服务实现类
 * </p>
 *
 * @author WuGuanFengYue
 * @since 2025-09-15
 */
@Service
@RequiredArgsConstructor
public class AssetWarehouseServiceImpl extends ServiceImpl<AssetWarehouseMapper, AssetWarehouse> implements AssetWarehouseService {

    private final AssetInventoryRecordService assetInventoryRecordService;
    private final SysDeptMapper sysDeptMapper;

    @Override
    public IPage<AssetWarehouseVO> getPageList(AssetWarehousePageQuery pageQuery) {
        LambdaQueryWrapper<AssetWarehouse> queryWrapper = new LambdaQueryWrapper<>();
        if (StringUtils.isNotBlank(pageQuery.getKeyword())) {
            queryWrapper.like(AssetWarehouse::getWarehouseName, pageQuery.getKeyword())
                    .or()
                    .like(AssetWarehouse::getManagerName, pageQuery.getKeyword());
        }
        Page<AssetWarehouse> page = this.page(new Page<>(pageQuery.getPageNum(), pageQuery.getPageSize()), queryWrapper);
        Page<AssetWarehouseVO> pageVO = new Page<>();
        BeanUtil.copyProperties(page, pageVO, "records");
        List<AssetWarehouseVO> assetWarehouseVOS = BeanUtil.copyToList(page.getRecords(), AssetWarehouseVO.class);
        if (CollUtil.isEmpty(assetWarehouseVOS)) {
            return pageVO;
        }
        List<Integer> warehouseIds = assetWarehouseVOS.stream().map(AssetWarehouseVO::getId).collect(Collectors.toList());
        List<Integer> deptIds = assetWarehouseVOS.stream().map(AssetWarehouseVO::getDeptId).distinct().collect(Collectors.toList());

        List<SysDept> sysDepts = sysDeptMapper.selectByIds(deptIds);
        Map<Integer, String> deptMap = sysDepts.stream()
                .collect(Collectors.toMap(item->item.getDeptId().intValue(), SysDept::getDeptName));
        //查询库存数量
        Map<Integer, List<AssetInventoryRecord>> inventoryRecordMap = assetInventoryRecordService.lambdaQuery()
                .in(AssetInventoryRecord::getWarehouseId, warehouseIds)
                .list().stream().collect(Collectors.groupingBy(AssetInventoryRecord::getWarehouseId));
        //计算当前库存
        assetWarehouseVOS.forEach(warehouseVO -> {
            List<AssetInventoryRecord> assetInventoryRecords = inventoryRecordMap.get(warehouseVO.getId());
            if (CollUtil.isEmpty(assetInventoryRecords)) {
                warehouseVO.setCurrentStock(0);
            }
            long inStock = assetInventoryRecords.stream().filter(item -> item.getType().equals(0)).count();
            long outStock = assetInventoryRecords.stream().filter(item -> item.getType().equals(1)).count();
            warehouseVO.setCurrentStock((int) (inStock - outStock));
            //设置部门名称
            warehouseVO.setDeptName(deptMap.getOrDefault(warehouseVO.getDeptId(), ""));
        });
        pageVO.setRecords(assetWarehouseVOS);
        return pageVO;
    }

    @Override
    public void add(AssetWarehouseDTO dto) {
        AssetWarehouse assetWarehouse = BeanUtil.copyProperties(dto, AssetWarehouse.class);
        String username = SecurityUtils.getUsername();
        assetWarehouse.setCreateBy(username);
        this.save(assetWarehouse);
    }

    @Override
    public void edit(AssetWarehouseDTO dto) {
        if (Objects.isNull(dto.getId())) {
            throw new ServiceException("仓库ID不能为空");
        }
        AssetWarehouse assetWarehouse = BeanUtil.copyProperties(dto, AssetWarehouse.class);
        String username = SecurityUtils.getUsername();
        assetWarehouse.setUpdateBy(username);
        this.updateById(assetWarehouse);
    }

    @Override
    public void delete(Integer id) {
        if (Objects.isNull(id)) {
            throw new ServiceException("仓库ID不能为空");
        }
        List<AssetInventoryRecord> list = assetInventoryRecordService.lambdaQuery().eq(AssetInventoryRecord::getWarehouseId, id).list();
        if (CollUtil.isNotEmpty(list)) {
            List<Integer> inStockIds = list.stream().filter(item -> item.getType().equals(0)).map(AssetInventoryRecord::getAssetMainId).collect(Collectors.toList());
            list.stream().filter(item -> item.getType().equals(1)).forEach(item -> {
                inStockIds.remove(item.getAssetMainId());
            });
            if (CollUtil.isNotEmpty(inStockIds)) {
                throw new ServiceException("该仓库存在库存记录，不能删除");
            }
        }
        this.removeById(id);
    }
}