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

import cc.mrbird.febs.ai.entity.AiCompany;
import cc.mrbird.febs.ai.entity.AiKnowledgeFile;
import cc.mrbird.febs.ai.mapper.AiKnowledgeFileMapper;
import cc.mrbird.febs.ai.service.AiCompanyService;
import cc.mrbird.febs.ai.service.AiKnowledgeFileService;
import cc.mrbird.febs.ai.util.KnowledgeBaseUtil;
import cc.mrbird.febs.ai.util.UUID;
import cc.mrbird.febs.common.entity.FebsResponse;
import cc.mrbird.febs.common.entity.QueryRequest;
import cc.mrbird.febs.common.exception.FebsException;
import cc.mrbird.febs.rabbit.producter.AgentProducer;
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.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service
@RequiredArgsConstructor
public class AiKnowledgeFileServiceImpl extends ServiceImpl<AiKnowledgeFileMapper, AiKnowledgeFile> implements AiKnowledgeFileService {

    private final AiKnowledgeFileMapper aiKnowledgeFileMapper;
    private final AiCompanyService aiCompanyService;
    private final AgentProducer agentProducer;

    @Override
    public IPage<AiKnowledgeFile> listInPage(AiKnowledgeFile dto, QueryRequest request) {
        Page<AiKnowledgeFile> page = new Page<>(request.getPageNum(), request.getPageSize());
        LambdaQueryWrapper<AiKnowledgeFile> query = Wrappers.lambdaQuery(AiKnowledgeFile.class);
        if (StrUtil.isNotEmpty(dto.getCompanyId())){
            query.eq(AiKnowledgeFile::getCompanyId, dto.getCompanyId());
        }
        query.orderByDesc(AiKnowledgeFile::getCompanyId);
        Page<AiKnowledgeFile> pages = aiKnowledgeFileMapper.selectPage(page, query);
        List<AiKnowledgeFile> records = pages.getRecords();
        if (CollUtil.isNotEmpty(records)){
            //stream流获取全部的公司ID
            Set<String> companyIds = records.stream().map(AiKnowledgeFile::getCompanyId).collect(Collectors.toSet());
            List<String> companyIdList = new ArrayList<>(companyIds);
            List<AiCompany> listById = aiCompanyService.getListById((companyIdList));
            Map<String, AiCompany> collect = listById.stream().collect(Collectors.toMap(AiCompany::getId, aiCompany -> aiCompany));
            for (AiKnowledgeFile aiKnowledgeFile : records){
                if (StrUtil.isEmpty(aiKnowledgeFile.getCompanyId())){
                    aiKnowledgeFile.setCompanyName("公共");
                }else{
                    if (StrUtil.isEmpty(aiKnowledgeFile.getCompanyId())){
                        aiKnowledgeFile.setCompanyName("公共");
                    }else{
                        aiKnowledgeFile.setCompanyName(collect.get(aiKnowledgeFile.getCompanyId()).getName());
                    }
                }
            }
        }
        return pages;
    }

    @Override
    @Transactional
    public FebsResponse add(AiKnowledgeFile dto) {
        AiKnowledgeFile entity = new AiKnowledgeFile();
        entity.setId(UUID.getSimpleUUIDString());
        entity.setCompanyId(dto.getCompanyId());
        entity.setName(dto.getName());
        entity.setState(1);
        entity.setSavePath(dto.getSavePath());
        entity.setCreatedTime(new Date());
        this.save(entity);

        agentProducer.sendAddKnowledge( entity.getId());
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public FebsResponse update(AiKnowledgeFile dto) {
        return null;
    }

    @Override
    public void getAddKnowledge(String id) {
        AiKnowledgeFile aiKnowledgeFile = this.getById(id);
        if (ObjectUtil.isNull(aiKnowledgeFile)){
            return;
        }

        String categoryId = null;
        String knowledgeId = null;
        if (StrUtil.isNotEmpty(aiKnowledgeFile.getCompanyId())){
            AiCompany aiCompany = aiCompanyService.getById(aiKnowledgeFile.getCompanyId());
            if (StrUtil.isNotEmpty(aiCompany.getCategoryId())){
                categoryId = aiCompany.getCategoryId();
                knowledgeId = aiCompany.getKnowledgeId();
            }
        }else{
            categoryId = KnowledgeBaseUtil.DEFAULT_CATEGORY_ID;
            knowledgeId = KnowledgeBaseUtil.DEFAULT_KNOWLEDGE_ID;
        }

        String fileId = KnowledgeBaseUtil.uploadFileToAppData(aiKnowledgeFile.getSavePath(), categoryId);
        if (StrUtil.isBlank(fileId)){
            log.info("初始化应用数据失败");
            return ;
        }

        String jobId = KnowledgeBaseUtil.updateKnowledgeBase(fileId, knowledgeId, null);
        aiKnowledgeFileMapper.update(null,
                Wrappers.lambdaUpdate(AiKnowledgeFile.class)
                        .set(AiKnowledgeFile::getFileId, fileId)
                        .set(AiKnowledgeFile::getJobId, jobId)
                        .eq(AiKnowledgeFile::getId, aiKnowledgeFile.getId())
        );

    }

    @Override
    public FebsResponse refresh(String id) {
        AiKnowledgeFile aiKnowledgeFile = this.getById(id);
        if (ObjectUtil.isNull(aiKnowledgeFile)){
            throw new FebsException("文件不存在");
        }

        Integer state = aiKnowledgeFile.getState();

        if (state == 1){
            state = KnowledgeBaseUtil.getFileJobStatus(aiKnowledgeFile.getFileId());
            if ( state == 2) {
                aiKnowledgeFileMapper.update(null,
                        Wrappers.lambdaUpdate(AiKnowledgeFile.class)
                                .set(AiKnowledgeFile::getState, state)
                                .eq(AiKnowledgeFile::getId, aiKnowledgeFile.getId())
                );
            }
        }

        if (state == 2){
            String knowledgeId = null;
            if (StrUtil.isNotEmpty(aiKnowledgeFile.getCompanyId())){
                AiCompany aiCompany = aiCompanyService.getById(aiKnowledgeFile.getCompanyId());
                if (StrUtil.isNotEmpty(aiCompany.getCategoryId())){
                    knowledgeId = aiCompany.getKnowledgeId();
                }
            }else{
                knowledgeId = KnowledgeBaseUtil.DEFAULT_KNOWLEDGE_ID;
            }
            state = KnowledgeBaseUtil.getIndexKnowledgeJobStatus(aiKnowledgeFile.getJobId(),knowledgeId);
            if ( state == 3) {
                aiKnowledgeFileMapper.update(null,
                        Wrappers.lambdaUpdate(AiKnowledgeFile.class)
                                .set(AiKnowledgeFile::getState, state)
                                .eq(AiKnowledgeFile::getId, aiKnowledgeFile.getId())
                );
            }
        }
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public FebsResponse delete(String id) {
        //如何从服务器上的位置删除对应的文件
        AiKnowledgeFile aiKnowledgeFile = this.getById(id);
        if (ObjectUtil.isNull(aiKnowledgeFile)){
            throw new FebsException("文件不存在");
        }
        //服务器删除
        try {
            Path filePath = Paths.get(aiKnowledgeFile.getSavePath());
            boolean deleted = Files.deleteIfExists(filePath);
            if (!deleted) {
                throw new FebsException("文件删除失败");
            }
        } catch (Exception e) {
            throw new FebsException("删除文件时发生错误: " + e.getMessage());
        }

        aiKnowledgeFileMapper.deleteById(id);

        //知识库删除
        String knowledgeId = null;
        if (StrUtil.isNotEmpty(aiKnowledgeFile.getCompanyId())){
            AiCompany aiCompany = aiCompanyService.getById(aiKnowledgeFile.getCompanyId());
            if (StrUtil.isNotEmpty(aiCompany.getCategoryId())){
                knowledgeId = aiCompany.getKnowledgeId();
            }
        }else{
            knowledgeId = KnowledgeBaseUtil.DEFAULT_KNOWLEDGE_ID;
        }
        KnowledgeBaseUtil.knowledgeFileDelete(aiKnowledgeFile.getFileId(), knowledgeId);

        //应用数据删除
        try {
            KnowledgeBaseUtil.deleteFile(aiKnowledgeFile.getFileId());
        } catch (Exception e) {
            throw new FebsException("应用数据删除时发生错误: " + e.getMessage());
        }
        return new FebsResponse().success().message("操作成功");
    }

    @Override
    public void refreshEvent() {
        LambdaQueryWrapper<AiKnowledgeFile> queryWrapper = Wrappers.lambdaQuery(AiKnowledgeFile.class);
        queryWrapper.ne(AiKnowledgeFile::getState, 3);
        List<AiKnowledgeFile> list = aiKnowledgeFileMapper.selectList(queryWrapper);
        if (CollUtil.isEmpty( list)){
            for (AiKnowledgeFile aiKnowledgeFile : list){
                refresh(aiKnowledgeFile.getId());
            }
        }

    }
}