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

import cc.mrbird.febs.ai.entity.AiProduct;
import cc.mrbird.febs.ai.entity.AiProductCategory;
import cc.mrbird.febs.ai.entity.AiProductDependency;
import cc.mrbird.febs.ai.entity.AiProductPoint;
import cc.mrbird.febs.ai.mapper.AiProductCategoryMapper;
import cc.mrbird.febs.ai.mapper.AiProductDependencyMapper;
import cc.mrbird.febs.ai.mapper.AiProductMapper;
import cc.mrbird.febs.ai.service.AiProductDependencyService;
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.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 java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

@Slf4j
@Service
@RequiredArgsConstructor
public class AiProductDependencyServiceImpl extends ServiceImpl<AiProductDependencyMapper, AiProductDependency> implements AiProductDependencyService {

    private final AiProductDependencyMapper aiProductDependencyMapper;
    private final AiProductMapper aiProductMapper;
    private final AiProductCategoryMapper aiProductCategoryMapper;

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

        Page<AiProductDependency> page = new Page<>(request.getPageNum(), request.getPageSize());
        LambdaQueryWrapper<AiProductDependency> query = Wrappers.lambdaQuery(AiProductDependency.class);
        if (StrUtil.isNotEmpty(dto.getCompanyId())){
            query.eq(AiProductDependency::getCompanyId, dto.getCompanyId());
        }
        Page<AiProductDependency> pages = aiProductDependencyMapper.selectPage(page, query);
        List<AiProductDependency> records = pages.getRecords();
        if (CollUtil.isNotEmpty(records)){
            //stream获取全部的productId
            Set<String> collectCategoryIdList = records.stream().map(AiProductDependency::getProductCategoryId).collect(Collectors.toSet());
            List<AiProductCategory> aiProductCategories = aiProductCategoryMapper.selectList(
                    Wrappers.lambdaQuery(AiProductCategory.class)
                            .select(AiProductCategory::getId, AiProductCategory::getName)
                            .in(AiProductCategory::getId, collectCategoryIdList)
            );
            Map<String, AiProductCategory> aiProductCategoryMap =
                    aiProductCategories.stream().collect(Collectors.toMap(AiProductCategory::getId, aiProductCategory -> aiProductCategory));

            Set<String> collectPrerequisiteProductIdList = records.stream().map(AiProductDependency::getPrerequisiteProductId).collect(Collectors.toSet());
            List<AiProduct> aiProductPoints = aiProductMapper.selectList(
                    Wrappers.lambdaQuery(AiProduct.class)
                            .select(AiProduct::getId, AiProduct::getName)
                            .in(AiProduct::getId, collectPrerequisiteProductIdList)
            );
            Map<String, AiProduct> aiProductPointMap =
                    aiProductPoints.stream().collect(Collectors.toMap(AiProduct::getId, aiProduct -> aiProduct));

            Set<String> collectTargetProductIdList = records.stream().map(AiProductDependency::getTargetProductId).collect(Collectors.toSet());
            List<AiProduct> aiProductTargets = aiProductMapper.selectList(
                    Wrappers.lambdaQuery(AiProduct.class)
                            .select(AiProduct::getId, AiProduct::getName)
                            .in(AiProduct::getId, collectTargetProductIdList)
            );
            Map<String, AiProduct> aiProductTargetMap =
                    aiProductTargets.stream().collect(Collectors.toMap(AiProduct::getId, aiProduct -> aiProduct));

            for (AiProductDependency record : records){
                record.setProductCategoryName(aiProductCategoryMap.get(record.getProductCategoryId()).getName());
                record.setPrerequisiteProductName(aiProductPointMap.get(record.getPrerequisiteProductId()).getName());
                record.setTargetProductName(aiProductTargetMap.get(record.getTargetProductId()).getName());
            }
        }
        return pages;
    }

    @Override
    public FebsResponse add(AiProductDependency dto) {
        dto.setId(UUID.getSimpleUUIDString());
        dto.setCreatedTime(new Date());
        aiProductDependencyMapper.insert(dto);
        return new FebsResponse().success();
    }

    @Override
    public FebsResponse delete(String id) {

        AiProductDependency aiProductDependency = aiProductDependencyMapper.selectById(id);
        if (aiProductDependency != null){
            aiProductDependencyMapper.deleteById(id);
        }
        return new FebsResponse().success();
    }
}