package cn.iocoder.yudao.module.mes.service.wm.warehouse;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.mes.controller.admin.wm.warehouse.vo.location.MesWmWarehouseLocationImportExcelVO;
import cn.iocoder.yudao.module.mes.controller.admin.wm.warehouse.vo.location.MesWmWarehouseLocationImportRespVO;
import cn.iocoder.yudao.module.mes.controller.admin.wm.warehouse.vo.location.MesWmWarehouseLocationPageReqVO;
import cn.iocoder.yudao.module.mes.controller.admin.wm.warehouse.vo.location.MesWmWarehouseLocationSaveReqVO;
import cn.iocoder.yudao.module.mes.dal.dataobject.wm.warehouse.MesWmWarehouseDO;
import cn.iocoder.yudao.module.mes.dal.dataobject.wm.warehouse.MesWmWarehouseLocationDO;
import cn.iocoder.yudao.module.mes.dal.mysql.wm.warehouse.MesWmWarehouseLocationMapper;
import cn.iocoder.yudao.module.mes.dal.mysql.wm.warehouse.MesWmWarehouseMapper;
import cn.iocoder.yudao.module.mes.enums.wm.BarcodeBizTypeEnum;
import cn.iocoder.yudao.module.mes.service.md.workstation.MesMdWorkstationService;
import cn.iocoder.yudao.module.mes.service.wm.barcode.MesWmBarcodeService;
import cn.iocoder.yudao.module.mes.service.wm.materialstock.MesWmMaterialStockService;
import jakarta.annotation.Resource;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.module.mes.enums.ErrorCodeConstants.*;

/**
 * MES 库区 Service 实现类
 */
@Service
@Validated
public class MesWmWarehouseLocationServiceImpl implements MesWmWarehouseLocationService {

    @Resource
    private MesWmWarehouseLocationMapper locationMapper;

    @Resource
    private MesWmWarehouseMapper warehouseMapper;

    @Resource
    private MesWmWarehouseAreaService areaService;
    @Resource
    @Lazy
    private MesMdWorkstationService workstationService;
    @Resource
    private MesWmMaterialStockService materialStockService;
    @Resource
    @Lazy
    private MesWmWarehouseService warehouseService;
    @Resource
    private MesWmBarcodeService barcodeService;

    @Override
    public Long createWarehouseLocation(MesWmWarehouseLocationSaveReqVO createReqVO) {
        // 校验虚拟库区不允许新增
        validateNotVirtual(createReqVO.getCode());
        // 校验数据
        validateWarehouseLocationSaveData(createReqVO);

        // 插入
        MesWmWarehouseLocationDO location = BeanUtils.toBean(createReqVO, MesWmWarehouseLocationDO.class);
        locationMapper.insert(location);

        // 自动生成条码
        barcodeService.autoGenerateBarcode(BarcodeBizTypeEnum.LOCATION.getValue(),
                location.getId(), location.getCode(), location.getName());
        return location.getId();
    }

    @Override
    public void updateWarehouseLocation(MesWmWarehouseLocationSaveReqVO updateReqVO) {
        // 校验存在
        MesWmWarehouseLocationDO location = validateWarehouseLocationExists(updateReqVO.getId());
        // 校验虚拟库区不允许修改
        validateNotVirtual(location.getCode());
        // 校验数据
        validateWarehouseLocationSaveData(updateReqVO);

        // 更新
        MesWmWarehouseLocationDO updateObj = BeanUtils.toBean(updateReqVO, MesWmWarehouseLocationDO.class);
        locationMapper.updateById(updateObj);
    }

    private void validateWarehouseLocationSaveData(MesWmWarehouseLocationSaveReqVO reqVO) {
        // 校验仓库存在
        warehouseService.validateWarehouseExists(reqVO.getWarehouseId());
        // 校验编码唯一
        validateWarehouseLocationCodeUnique(reqVO.getId(), reqVO.getWarehouseId(), reqVO.getCode());
        // 校验名称唯一
        validateWarehouseLocationNameUnique(reqVO.getId(), reqVO.getWarehouseId(), reqVO.getName());
    }

    private void validateNotVirtual(String code) {
        if (MesWmWarehouseLocationDO.WIP_VIRTUAL_LOCATION.equals(code)) {
            throw exception(WM_WAREHOUSE_LOCATION_IS_VIRTUAL);
        }
    }

    @Override
    public void deleteWarehouseLocation(Long id) {
        // 校验存在
        MesWmWarehouseLocationDO location = validateWarehouseLocationExists(id);
        // 校验虚拟库区不允许删除
        validateNotVirtual(location.getCode());
        // 校验是否有库位
        if (areaService.getWarehouseAreaCountByLocationId(id) > 0) {
            throw exception(WM_WAREHOUSE_LOCATION_HAS_AREA);
        }
        // 校验是否被工作站引用
        if (workstationService.getWorkstationCountByLocationId(id) > 0) {
            throw exception(WM_WAREHOUSE_LOCATION_HAS_WORKSTATION);
        }
        // 校验是否有库存记录
        if (materialStockService.getMaterialStockCountByLocationId(id) > 0) {
            throw exception(WM_WAREHOUSE_LOCATION_HAS_MATERIAL_STOCK);
        }

        // 删除
        locationMapper.deleteById(id);
    }

    @Override
    public MesWmWarehouseLocationDO validateWarehouseLocationExists(Long id) {
        MesWmWarehouseLocationDO location = locationMapper.selectById(id);
        if (location == null) {
            throw exception(WM_WAREHOUSE_LOCATION_NOT_EXISTS);
        }
        return location;
    }

    private void validateWarehouseLocationCodeUnique(Long id, Long warehouseId, String code) {
        MesWmWarehouseLocationDO location = locationMapper.selectByCode(warehouseId, code);
        if (location == null) {
            return;
        }
        if (ObjUtil.notEqual(location.getId(), id)) {
            throw exception(WM_WAREHOUSE_LOCATION_CODE_DUPLICATE);
        }
    }

    private void validateWarehouseLocationNameUnique(Long id, Long warehouseId, String name) {
        MesWmWarehouseLocationDO location = locationMapper.selectByName(warehouseId, name);
        if (location == null) {
            return;
        }
        if (ObjUtil.notEqual(location.getId(), id)) {
            throw exception(WM_WAREHOUSE_LOCATION_NAME_DUPLICATE);
        }
    }

    @Override
    public MesWmWarehouseLocationDO getWarehouseLocation(Long id) {
        return locationMapper.selectById(id);
    }

    @Override
    public PageResult<MesWmWarehouseLocationDO> getWarehouseLocationPage(MesWmWarehouseLocationPageReqVO pageReqVO) {
        return locationMapper.selectPage(pageReqVO);
    }

    @Override
    public List<MesWmWarehouseLocationDO> getWarehouseLocationList(Long warehouseId) {
        return locationMapper.selectSimpleList(warehouseId);
    }

    @Override
    public List<MesWmWarehouseLocationDO> getWarehouseLocationList(Collection<Long> ids) {
        if (CollUtil.isEmpty(ids)) {
            return Collections.emptyList();
        }
        return locationMapper.selectListByIds(ids);
    }

    @Override
    public Long getWarehouseLocationCountByWarehouseId(Long warehouseId) {
        return locationMapper.selectCountByWarehouseId(warehouseId);
    }

    @Override
    public MesWmWarehouseLocationDO getWarehouseLocationByCode(String code) {
        // 1. 查询库区，存在则直接返回
        MesWmWarehouseLocationDO location = locationMapper.selectByCode(code);
        if (location != null) {
            return location;
        }

        // 2. 如果是虚拟线边库区编码，则自动初始化
        if (MesWmWarehouseLocationDO.WIP_VIRTUAL_LOCATION.equals(code)) {
            // 2.1 先确保虚拟仓库存在（getWarehouseByCode 会级联创建仓库）
            MesWmWarehouseDO warehouse = warehouseService.getWarehouseByCode(MesWmWarehouseDO.WIP_VIRTUAL_WAREHOUSE);
            cn.hutool.core.lang.Assert.notNull(warehouse, "虚拟仓库必须存在");
            // 2.2 自动初始化
            MesWmWarehouseLocationDO newLocation = MesWmWarehouseLocationDO.builder()
                    .warehouseId(warehouse.getId()).code(code).name("虚拟线边库区")
                    .frozen(false).remark("系统自动初始化的虚拟线边库区")
                    .build();
            locationMapper.insert(newLocation);
            return newLocation;
        }
        return null;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public MesWmWarehouseLocationImportRespVO importWarehouseLocationList(List<MesWmWarehouseLocationImportExcelVO> importList, boolean updateSupport) {
        // 校验导入数据不能为空
        if (CollUtil.isEmpty(importList)) {
            throw exception(WM_WAREHOUSE_LOCATION_IMPORT_LIST_IS_EMPTY);
        }
        MesWmWarehouseLocationImportRespVO respVO = MesWmWarehouseLocationImportRespVO.builder()
                .createCodes(new ArrayList<>()).updateCodes(new ArrayList<>())
                .failureCodes(new LinkedHashMap<>()).build();
        // 索引，用于错误提示
        AtomicInteger index = new AtomicInteger(1);
        importList.forEach(importItem -> {
            int currentIndex = index.getAndIncrement();
            String code = importItem.getCode();
            String key = StrUtil.blankToDefault(code, "第 " + currentIndex + " 行");
            // 校验编码必填
            if (StrUtil.isBlank(code)) {
                respVO.getFailureCodes().put(key, "库区编码不能为空");
                return;
            }
            // 校验名称必填
            if (StrUtil.isBlank(importItem.getName())) {
                respVO.getFailureCodes().put(key, "库区名称不能为空");
                return;
            }
            // 校验虚拟库区不允许导入
            if (MesWmWarehouseLocationDO.WIP_VIRTUAL_LOCATION.equals(code)) {
                respVO.getFailureCodes().put(key, "虚拟库区不允许导入");
                return;
            }
            // 按名称解析所属仓库
            if (StrUtil.isBlank(importItem.getWarehouseName())) {
                respVO.getFailureCodes().put(key, "所属仓库不能为空");
                return;
            }
            MesWmWarehouseDO warehouse = warehouseMapper.selectByName(importItem.getWarehouseName());
            if (warehouse == null) {
                respVO.getFailureCodes().put(key, "仓库不存在：" + importItem.getWarehouseName());
                return;
            }
            Long warehouseId = warehouse.getId();
            MesWmWarehouseLocationDO existingByCode = locationMapper.selectByCode(warehouseId, code);
            MesWmWarehouseLocationDO existingByName = locationMapper.selectByName(warehouseId, importItem.getName());
            if (existingByCode != null && updateSupport) {
                // 名称唯一校验（排除自己）
                if (existingByName != null && !existingByCode.getId().equals(existingByName.getId())) {
                    respVO.getFailureCodes().put(key, "库区名称已存在：" + importItem.getName());
                    return;
                }
                // 更新
                MesWmWarehouseLocationDO updateObj = new MesWmWarehouseLocationDO();
                updateObj.setId(existingByCode.getId());
                updateObj.setName(importItem.getName());
                updateObj.setWarehouseId(warehouseId);
                updateObj.setArea(importItem.getArea());
                updateObj.setFrozen(importItem.getFrozen());
                updateObj.setRemark(importItem.getRemark());
                locationMapper.updateById(updateObj);
                respVO.getUpdateCodes().add(code);
            } else if (existingByCode != null) {
                respVO.getFailureCodes().put(key, "库区编码已存在：" + code);
            } else {
                // 名称唯一校验
                if (existingByName != null) {
                    respVO.getFailureCodes().put(key, "库区名称已存在：" + importItem.getName());
                    return;
                }
                // 创建
                MesWmWarehouseLocationDO createObj = new MesWmWarehouseLocationDO();
                createObj.setId(null);
                createObj.setCode(code);
                createObj.setName(importItem.getName());
                createObj.setWarehouseId(warehouseId);
                createObj.setArea(importItem.getArea());
                createObj.setFrozen(ObjUtil.defaultIfNull(importItem.getFrozen(), Boolean.FALSE));
                createObj.setRemark(importItem.getRemark());
                locationMapper.insert(createObj);
                // 自动生成条码
                barcodeService.autoGenerateBarcode(BarcodeBizTypeEnum.LOCATION.getValue(),
                        createObj.getId(), createObj.getCode(), createObj.getName());
                respVO.getCreateCodes().add(code);
            }
        });
        return respVO;
    }

}