package cc.mrbird.febs.ai.service.impl;

import cc.mrbird.febs.ai.entity.AiMemberRole;
import cc.mrbird.febs.ai.entity.AiProductCategory;
import cc.mrbird.febs.ai.enums.ProductCategoryLevelEnum;
import cc.mrbird.febs.ai.mapper.AiProductCategoryMapper;
import cc.mrbird.febs.ai.service.AiProductCategoryService;
import cc.mrbird.febs.ai.util.UUID;
import cc.mrbird.febs.common.entity.FebsResponse;
import cc.mrbird.febs.common.entity.QueryRequest;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

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

/**
 * AI产品类别 Service实现类
 *
 * @author yourname
 * @date 2025-07-29
 */
@Slf4j
@Service
@RequiredArgsConstructor
public class AiProductCategoryServiceImpl extends ServiceImpl<AiProductCategoryMapper, AiProductCategory> implements AiProductCategoryService {

    private final AiProductCategoryMapper aiProductCategoryMapper;

    @Override
    public AiProductCategory getById(String id) {
        return aiProductCategoryMapper.selectById(id);
    }

    @Override
    public List<AiProductCategory> getList() {
        LambdaQueryWrapper<AiProductCategory> query = Wrappers.lambdaQuery(AiProductCategory.class);
        query.ne(AiProductCategory::getState, 2);
        query.eq(AiProductCategory::getLevel, ProductCategoryLevelEnum.LEVEL_ONE.getLevel());
        query.orderByDesc(AiProductCategory::getHotState);
        query.orderByAsc(AiProductCategory::getSort);
        List<AiProductCategory> aiProductCategories = aiProductCategoryMapper.selectList(query);
        if (CollUtil.isNotEmpty(aiProductCategories)){
            Set<String> parentIds = aiProductCategories.stream().map(AiProductCategory::getId).collect(Collectors.toSet());
            if (CollUtil.isNotEmpty(parentIds)){
                List<AiProductCategory> aiProductCategoriesChild = aiProductCategoryMapper.selectList(
                        Wrappers.lambdaQuery(AiProductCategory.class)
                                .in(AiProductCategory::getParentId, parentIds)
                                .ne(AiProductCategory::getState, 2)
                                .eq(AiProductCategory::getLevel, ProductCategoryLevelEnum.LEVEL_TWO.getLevel())
                                .orderByAsc(AiProductCategory::getSort)
                );

                //Stream流操作aiProductCategoriesChild，返回一个Map<ParentId,List<AiProductCategory>>,List<AiProductCategory>按照sort排序
                Map<String, List<AiProductCategory>> resultMap = aiProductCategoriesChild.stream()
                        .collect(Collectors.groupingBy(
                                AiProductCategory::getParentId,
                                Collectors.collectingAndThen(
                                        Collectors.toList(),
                                        list -> list.stream()
                                                .sorted(Comparator.comparing(AiProductCategory::getSort))
                                                .collect(Collectors.toList())
                                )
                        ));
                if (CollUtil.isNotEmpty(resultMap)){
                    aiProductCategories.forEach(aiProductCategory -> {
                        List<AiProductCategory> collect = resultMap.get(aiProductCategory.getId());
                        if (CollUtil.isNotEmpty(collect)){
                            aiProductCategory.setChild(collect);
                        }
                    });
                }
            }
        }
        return aiProductCategories;
    }

    @Override
    public Map<String, AiProductCategory> selectMapByIds(Set<String> collect) {
        Map<String,AiProductCategory> map = new HashMap<>();
        if(CollUtil.isNotEmpty( collect)){
            List<AiProductCategory> aiProductCategories = aiProductCategoryMapper.selectList(
                    Wrappers.lambdaQuery(AiProductCategory.class)
                    .in(AiProductCategory::getId,collect)
            );
            if(CollUtil.isNotEmpty(aiProductCategories)){
                aiProductCategories.forEach(aiProductCategory -> map.put(aiProductCategory.getId(),aiProductCategory));
            }
        }
        return map;
    }

    @Override
    public IPage<AiProductCategory> listInPage(AiProductCategory dto, QueryRequest request) {


        Page<AiProductCategory> page = new Page<>(request.getPageNum(), request.getPageSize());
        LambdaQueryWrapper<AiProductCategory> query = Wrappers.lambdaQuery(AiProductCategory.class);
        query.ne(AiProductCategory::getState, 2);
        query.orderByDesc(AiProductCategory::getHotState);
        query.orderByAsc(AiProductCategory::getSort);
        Page<AiProductCategory> pages = aiProductCategoryMapper.selectPage(page, query);
        List<AiProductCategory> records = pages.getRecords();
        if (CollUtil.isNotEmpty( records)){
            //stream流获取全部的parentId
            Set<String> parentIds = records.stream().map(AiProductCategory::getParentId).collect(Collectors.toSet());
            if (CollUtil.isNotEmpty(parentIds)){
                List<AiProductCategory> aiProductCategories = aiProductCategoryMapper.selectList(
                        Wrappers.lambdaUpdate(AiProductCategory.class)
                                .in(AiProductCategory::getId, parentIds)
                );
                Map<String, AiProductCategory> map = aiProductCategories.stream().collect(
                        Collectors.toMap(AiProductCategory::getId, aiProductCategory -> aiProductCategory));
                records.forEach(aiProductCategory -> {
                    AiProductCategory orDefault = map.getOrDefault(aiProductCategory.getParentId(), null);
                    if(ObjectUtil.isNotNull(orDefault)){
                        aiProductCategory.setParentName(orDefault.getName());
                    }
                });
            }
        }
        return pages;
    }

    @Override
    public FebsResponse changeState(String id, Integer type, Integer state) {
        AiProductCategory entity = this.getById(id);
        if(ObjectUtil.isNotNull(entity)){
            if(1 == type){
                aiProductCategoryMapper.update(null,
                        Wrappers.lambdaUpdate(AiProductCategory.class)
                        .set(AiProductCategory::getState, state)
                        .eq(AiProductCategory::getId, id)
                        );
            }
            if(2 == type){
                aiProductCategoryMapper.update(null,
                        Wrappers.lambdaUpdate(AiProductCategory.class)
                        .set(AiProductCategory::getHotState, state)
                        .eq(AiProductCategory::getId, id)
                        );
            }
        }
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public FebsResponse add(AiProductCategory dto) {
        AiProductCategory entity = new AiProductCategory();
        entity.setId(UUID.getSimpleUUIDString());
        entity.setCompanyId(dto.getCompanyId());
        entity.setCode(dto.getCode());
        entity.setName(dto.getName());
        entity.setBackImg(dto.getBackImg());
        entity.setIconImg(dto.getIconImg());
        entity.setSort(dto.getSort());
        entity.setCreatedTime(new Date());
        entity.setParentId(dto.getParentId());
        entity.setLevel(StrUtil.isNotEmpty(dto.getParentId()) ? 2 : 1);
        this.save(entity);
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public FebsResponse update(AiProductCategory dto) {
        String id = dto.getId();
        AiProductCategory entity = this.getById(id);
        if (ObjectUtil.isNotNull( entity)){
            this.update(null,
                    Wrappers.lambdaUpdate(AiProductCategory.class)
                            .set(AiProductCategory::getCode, dto.getCode())
                            .set(AiProductCategory::getName, dto.getName())
                            .set(AiProductCategory::getBackImg, dto.getBackImg())
                            .set(AiProductCategory::getIconImg, dto.getIconImg())
                            .set(AiProductCategory::getSort, dto.getSort())
                            .set(AiProductCategory::getUpdatedTime, new Date())
                            .eq(AiProductCategory::getId, id)
            );
        }
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public FebsResponse delete(String id) {

        AiProductCategory entity = this.getById(id);
        if(ObjectUtil.isNotNull( entity)){
            this.update(null,
                    Wrappers.lambdaUpdate(AiProductCategory.class)
                            .set(AiProductCategory::getState, 2)
                            .set(AiProductCategory::getUpdatedTime, new Date())
                            .eq(AiProductCategory::getId, id));

        }
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public List<AiProductCategory> categoryTree() {
        return this.getList() ;
    }

    @Override
    public List<AiProductCategory> parent() {
        LambdaQueryWrapper<AiProductCategory> query = Wrappers.lambdaQuery(AiProductCategory.class);
        query.select(AiProductCategory::getId,AiProductCategory::getName);
        query.eq(AiProductCategory::getLevel, 1);
        query.ne(AiProductCategory::getState, 2);
        return this.getBaseMapper().selectList(query);
    }
}