package com.gunshi.project.xyt.service;

import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gunshi.project.xyt.mapper.FileAssociationsMapper;
import com.gunshi.project.xyt.model.FileAssociations;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

import static com.gunshi.project.xyt.entity.MyConstant.*;


/**
 * 描述: 文件关联业务表
 * author: xusan
 * date: 2024-07-17 10:09:40
 */
@Slf4j
@Service
@Transactional
public class FileAssociationsService extends ServiceImpl<FileAssociationsMapper, FileAssociations> {

    private static final String THIS_REDIS_KEY = REDIS_KEY + FileAssociations.thisTableName + ":";

    @CacheEvict(value = THIS_REDIS_KEY, key = "#p0 +':*'", allEntries = true)
    public void saveFile(List<FileAssociations> files, String tableName, String businessId) {
        if (CollectionUtils.isEmpty(files)) {
            log.info("fileIds is null!");
        }

        // 查询是否添加
        List<FileAssociations> dbList = this.lambdaQuery()
                .eq(FileAssociations::getTableName, tableName)
                .eq(FileAssociations::getBusinessId, businessId)
                .eq(FileAssociations::getDel, REC)
                .list();

        if (CollectionUtils.isNotEmpty(dbList)) {
            Set<Long> fileIds = dbList.stream().map(FileAssociations::getFileId)
                    .collect(Collectors.toSet());
            // 删除已添加数据, 删除重复数据 删除不成功即新数据
            files = files.stream()
                    .filter(fileAssociations -> !fileIds.remove(fileAssociations.getFileId()))
                    .collect(Collectors.toList());

//            if (CollectionUtils.isNotEmpty(files)) {

                // 删除
                if (this.lambdaUpdate()
                        .set(FileAssociations::getDel, DEL)
                        .eq(FileAssociations::getTableName, tableName)
                        .eq(FileAssociations::getBusinessId, businessId)
                        .in(FileAssociations::getFileId, fileIds)
                        .update()) {
                    log.info("delete file {} success!", fileIds);
                }

//            }
        }


        // 做新增
        if (CollectionUtils.isNotEmpty(files)) {

            files.forEach(fileId -> {
                fileId.setId(IdWorker.getId());
                fileId.setTableName(tableName);
                fileId.setBusinessId(businessId);
            });

            if (!this.saveBatch(files)) {
                log.error("save file error!");
            }

        }

    }

    @CacheEvict(value = THIS_REDIS_KEY, key = "#p0 +':*'", allEntries = true)
    public void deleteFile(String tableName, String businessId) {
        // 删除
        if (this.lambdaUpdate()
                .set(FileAssociations::getDel, DEL)
                .eq(FileAssociations::getTableName, tableName)
                .eq(FileAssociations::getBusinessId, businessId)
                .update()) {
            log.info("delete file {} success!", businessId);
        }
    }

    @Cacheable(value = THIS_REDIS_KEY, key = "#p0 +':'+ #p1", unless = "false")
    public List<FileAssociations> getFiles(String tName, String bId) {
        return this.baseMapper.getFiles(tName,bId);
    }

}