package cn.iocoder.yudao.module.srm.service.supplier;

import cn.hutool.core.collection.CollUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX;
import cn.iocoder.yudao.module.srm.controller.admin.supplier.vo.SrmSupplierPageReqVO;
import cn.iocoder.yudao.module.srm.controller.admin.supplier.vo.SrmSupplierSaveReqVO;
import cn.iocoder.yudao.module.srm.dal.dataobject.*;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmBidAwardMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmBidEvaluationMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmSupplierApplyMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmSupplierCategoryMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmSupplierContactMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmSupplierCertificateMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmSupplierMapper;
import cn.iocoder.yudao.module.srm.dal.mysql.SrmTenderBidMapper;
import cn.iocoder.yudao.module.srm.enums.ErrorCodeConstants;
import cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.validation.annotation.Validated;
import org.springframework.transaction.annotation.Transactional;

import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;

import cn.hutool.core.collection.CollUtil;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

@Service
@Validated
public class SrmSupplierServiceImpl implements SrmSupplierService {

    @Resource
    private SrmSupplierMapper supplierMapper;

    @Resource
    private SrmSupplierContactMapper supplierContactMapper;

    @Resource
    private SrmSupplierCategoryMapper supplierCategoryMapper;

    @Resource
    private SrmSupplierApplyMapper supplierApplyMapper;

    @Resource
    private SrmSupplierCertificateMapper supplierCertificateMapper;

    @Resource
    private SrmTenderBidMapper tenderBidMapper;

    @Resource
    private SrmBidEvaluationMapper bidEvaluationMapper;

    @Resource
    private SrmBidAwardMapper bidAwardMapper;

    @Override
    public Long createSupplier(SrmSupplierSaveReqVO createReqVO) {
        // 校验供应商编码唯一性
        validateCodeUnique(createReqVO.getCode(), null);
        // 插入
        SrmSupplierDO supplier = BeanUtils.toBean(createReqVO, SrmSupplierDO.class);
        supplierMapper.insert(supplier);
        return supplier.getId();
    }

    @Override
    public void updateSupplier(SrmSupplierSaveReqVO updateReqVO) {
        // 校验存在性
        validateSupplierExists(updateReqVO.getId());
        // 校验编码唯一性
        validateCodeUnique(updateReqVO.getCode(), updateReqVO.getId());
        // 更新
        SrmSupplierDO updateObj = BeanUtils.toBean(updateReqVO, SrmSupplierDO.class);
        supplierMapper.updateById(updateObj);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteSupplier(Long id) {
        // 校验存在性
        validateSupplierExists(id);
        // 关联数据存在时，不允许删除
        validateNoReference(id);
        // 可直接清理的关联数据
        supplierContactMapper.deleteBySupplierId(id);
        supplierCategoryMapper.deleteBySupplierId(id);
        // 逻辑删除
        supplierMapper.deleteById(id);
    }

    @Override
    public SrmSupplierDO getSupplier(Long id) {
        return supplierMapper.selectById(id);
    }

    @Override
    public PageResult<SrmSupplierDO> getSupplierPage(SrmSupplierPageReqVO pageReqVO) {
        return supplierMapper.selectPage(pageReqVO);
    }

    @Override
    public List<SrmSupplierDO> getSupplierSimpleList() {
        return supplierMapper.selectApprovedList();
    }

    @Override
    public List<SrmSupplierDO> getSupplierAllList() {
        return supplierMapper.selectList(new LambdaQueryWrapperX<SrmSupplierDO>()
                .orderByAsc(SrmSupplierDO::getId));
    }

    @Override
    public List<SrmSupplierDO> getSupplierList(Collection<Long> ids) {
        if (CollUtil.isEmpty(ids)) {
            return Collections.emptyList();
        }
        return supplierMapper.selectBatchIds(ids);
    }

    // ========== 校验方法 ==========

    private void validateSupplierExists(Long id) {
        if (supplierMapper.selectById(id) == null) {
            throw ServiceExceptionUtil.exception(ErrorCodeConstants.SUPPLIER_NOT_EXISTS);
        }
    }

    private void validateCodeUnique(String code, Long id) {
        SrmSupplierDO existing = supplierMapper.selectByCode(code);
        if (existing != null && !existing.getId().equals(id)) {
            throw ServiceExceptionUtil.exception(ErrorCodeConstants.SUPPLIER_CODE_EXISTS);
        }
    }

    private void validateNoReference(Long id) {
        boolean hasReference = supplierApplyMapper.existsApprovedBySupplierId(id)
                || supplierCertificateMapper.selectCount(SrmSupplierCertificateDO::getSupplierId, id) > 0
                || tenderBidMapper.selectCount(SrmTenderBidDO::getSupplierId, id) > 0
                || bidEvaluationMapper.selectCount(SrmBidEvaluationDO::getSupplierId, id) > 0
                || bidAwardMapper.selectCount(SrmBidAwardDO::getSupplierId, id) > 0;
        if (hasReference) {
            throw ServiceExceptionUtil.exception(ErrorCodeConstants.SUPPLIER_EXISTS_REFERENCE);
        }
    }

}