const {handle, handleAll} = require('../tools/handle_cjs');
const d_base = require("../database/d_base");
const d_product = require("../database/d_product");
const d_news = require("../database/d_news");
const codeMap = require("../map/rcodeMap");
const dbField = require("../map/dbField");
const {searchHandle} = require("../tools/searchSql");
const {isEmpty, toNumber} = require("../tools/typeTool_cjs");
const config_path = require("../configs/path");
const {isArray} = require("ant-design-vue/lib/_util/vue-types/utils");
const {mvFile, rmFile} = require("../tools/saveFiles_cjs");
const {getUnixTimeStamp} = require("../tools/time_cjs");
const {filePathToUrl} = require("../tools/filePathTool");
const log = require("../logger").logger("c_base","info");

// 获取启用的轮播列表
async function getEnableCarousel(){
  let err,res;
  [err,res] = await handle(d_base.getCarousel({
    state: dbField.db_base.carouselState.enable
  }));
  // console.log(res);
  if(err){
    return [err,null];
  }
  // 路径转换
  res = res.map(item=>{
    item.filePath = filePathToUrl(item.fileType,item.filePath);
    return item;
  });
  return [null,res];
}

async function getAllCarousel(){
  let err,res;
  [err,res] = await handle(d_base.getCarousel());
  // console.log(res);
  if(err){
    return [err,null];
  }
  // 路径转换
  res = res.map(item=>{
    item.filePath = filePathToUrl(item.fileType,item.filePath);
    return item;
  });
  return [null,res];
}

async function addCarousel(sort,fileId,type,value){
  let err,res;
  let valueData = {};
  let valueShowText = '';
  let updateTime = getUnixTimeStamp();
  // 根据type判断value
  if(type !== dbField.db_base.carouselType.href){
    if(type === dbField.db_base.carouselType.production){
      [err,res] = await handle(d_product.getProductById(value));
    }else if(type === dbField.db_base.carouselType.news){
      // 获取新闻信息
      [err,res] = await handle(d_news.getNewsById(value));
    }
    if(err){
      console.log(err);
      log.info(`[新增轮播] 检索产品信息失败`);
      return [{eCode: codeMap.ServerError, eMsg: `检索数据异常`},null];
    }
    if(isEmpty(res)){
      log.info(`[新增轮播] 无法找到对应的产品或者文章信息`);
      return [{eCode: codeMap.NotFound, eMsg: `无法找到对应的产品或者文章信息`},null];
    }
    valueData = res[0];
  }
  valueShowText = valueData.title;
  [err,res] = await handle(d_base.addCarousel(
    sort,fileId,type,value,valueShowText,updateTime
  ));
  if(err){
    log.info(`[新增轮播] 导入数据异常`)
    return [err,null];
  }
  return [null,res];
}

async function deleteCarousel(id){
  let err,res;
  [err,res] = await handle(d_base.deleteCarousel(id));
  if(err){
    log.info(`[删除轮播] 删除数据异常`);
    return [err,null];
  }
  return [null,res];
}

async function updateCarousel(id,updateItems){
  let err,res;
  let rawData = {};
  let unixTime = getUnixTimeStamp();
  let updateData = {};
  let typeKeys = Object.keys(dbField.db_base.carouselType);
  let typeString = '';
  let typeShowText = '';
  let carouselType = dbField.db_base.carouselType.href;
  // 判断是否需要更新type
  if (updateItems.value){
    // 获取基础type值
    if(!isEmpty(updateItems.type)){
      typeString = updateItems.type;
      updateData.type = updateItems.type;
    }else{
      [err,res] = await handle(d_base.getCarouselById(id));
      if(err){
        log.error(`[修改轮播] 获取轮播基础数据时异常 ${err.message}`);
        return [{eCode: codeMap.ServerError, eMsg: `获取轮播基础数据异常`},null];
      }
      if(isEmpty(res)){
        log.info(`[修改轮播] 无法通过id找到轮播数据`);
        return [{eCode: codeMap.NotFound, eMsg: `请检测id是否正确`},null];
      }
      rawData = res[0];
      typeString = rawData.type;
    }
    console.log(toNumber(typeString))
    // 需要更新具体值
    if(toNumber(typeString) !== dbField.db_base.carouselType.href){
      if(toNumber(typeString) === dbField.db_base.carouselType.production){
        typeShowText = '产品';
        // 获取产品信息
        [err,res] = await handle(d_product.getProductById(updateItems.value));
      }else if(toNumber(typeString) === dbField.db_base.carouselType.news){
        typeShowText = '文章';
        // 获取新闻信息
        [err,res] = await handle(d_news.getNewsById(updateItems.value));
      }else {
        return [{eCode: codeMap.NotParam, eMsg: `轮播类型异常! carouseType:${typeString} typeof:${typeof typeString}`},null];
      }
      if(err){
        console.log(err);
        log.error(`[修改轮播] 检索${typeShowText}信息失败 ${err.message}}`);
        return [{eCode: codeMap.ServerError, eMsg: `检索${typeShowText}数据异常`},null];
      }
      if(isEmpty(res)){
        log.info(`[修改轮播] 无法找到对应的${typeShowText}数据`);
        return [{eCode: codeMap.NotFound, eMsg: `无法找到对应的产品或者文章信息`},null];
      }
      updateData.valueShowText = res[0].title;
    }

    updateData.value = updateItems.value;
  }

  if (!isEmpty(updateItems.sort)){
    updateData.sort = toNumber(updateItems.sort);
  }

  if (!isEmpty(updateItems.state)){
    updateData.state = updateItems.state;
  }

  if(updateItems.fileId){
    updateData.fileId = updateItems.fileId;
    // todo 检测文件id是否存在
  }
  console.log(updateData);
  [err,res] = await handle(d_base.updateCarousel(id,updateData,unixTime));
  if(err){
    console.log(err);
    log.error(`[修改轮播] 数据更新失败,${err.message}`);
    return [{eCode: codeMap.SaveError, eMsg: `数据更新失败,请稍后重试`},null];
  }
  return [null,res];
}

/**
 * 文件上传
 * @param type
 * @param files
 * @returns {Promise<[{eMsg: string, eCode: number},null]|*[][]|[{eMsg: string, eCode: *},null]|*[]>}
 */
async function uploadFile(type, files){
  // 文件类型一般不会被改变,只移动文件至对应的存储目录,并将路径存储到数据库中.只存储文件名
  let err,res,newFileName;
  let uploadPath = config_path.files;
  let fileNameArr = [];// 文件存储路径数组
  // 文件转存,使用newFileName作为路径
  if(type === dbField.db_base.fileType.image){
    uploadPath = config_path.images;
  }else if(type === dbField.db_base.fileType.video){
    uploadPath = config_path.videos;
  }
  let keys = Object.keys(files);
  // 遍历转移文件
  for(let fileKey of keys){
    let file = files[fileKey];
    // 判断当前文件是否为数组
    if(!file.newFilename && file.length){
      for(let f of file){
        // console.log(f);
        // console.log(f.newFilename);
        log.info(`[文件上传] 开始移动文件 ${f.newFilename} to ${uploadPath}`);
        [err,newFileName] = await mvFile(f,uploadPath, f.newFilename);
        if(err){
          return [err,null];
        }
        // console.log('移动文件成功' + newFileName);
        fileNameArr.push(newFileName);
      }
    }else if(file.newFilename){
     [err,newFileName] = await mvFile(file,uploadPath,file.newFilename);
      if(err){
        return [err,null];
      }
      fileNameArr.push(newFileName);
    }else{
      // 文件调用异常
      log.error(`[文件上传] 文件调用异常,fileObj\n: ${JSON.stringify(file)}`);
      return [
        {
          eCode:codeMap.ServerError,
          eMsg:`文件调用异常`
        },null];
    }

  }
  // 存储至数据库
  // console.log(type);
  [err,res] = await handle(d_base.uploadFiles(type,fileNameArr,getUnixTimeStamp()));
  if(err){
    log.error(`[文件上传] 文件入库失败 ${err.message}`);
    return [{eCode: codeMap.SaveError,eMsg: `文件存储失败!!!`},null];
  }
  log.info(`[文件上传] 文件上传成功 ${res.affectedRows}`);
  return [null,fileNameArr];
}

/**
 * 搜索文件
 * @param type
 * @param key
 * @param l
 * @param p
 * @returns {Promise<err[]|{arr, total: number, limit, page}[]>}
 */
async function searchFiles(type = 0, key, l, p){
  let err,res;
  let _params = {
    key: key,
  }
  // console.log(type);
  // type为 数据库值加一,因为数据库中存储值从0开始,而前端显示从1开始
  if((type - 1) !== dbField.db_base.fileType.all){
    _params.type = type;
  }
  // console.log(_params);
  [err,res] = await searchHandle('搜索文件失败', d_base.loadFiles, _params, l, p);
  if(err){
    log.info(`[文件资源] 加载失败 ${err.eDetail||err.message}`)
    return [err,null];
  }
  // console.log(res);
  res.arr = res.arr.map(item=>{
    console.log(item);
    item.filePath = filePathToUrl(item.fileType,item.filePath);
    return item;
  });
  return [null,res];
}


async function deleteFile(fileId){
  let err,res,rmRes;

  // 获取文件信息
  [err,res] = await handle(d_base.getFileById(fileId));
  if(err){
    log.info(`[文件资源] 获取文件信息失败 ${err.message}`);
    return [{eCode:codeMap.ServerError,eMsg:`删除文件失败,无法查找文件`},null];
  }
  if(!res.length){
    log.info(`[文件资源] 获取文件信息失败,无法找到文件`);
    return [{eCode:codeMap.NotFound,eMsg:`删除文件失败,无法查找文件`},null];
  }
  let fileData = res[0];
  let filePath = filePathToUrl(fileData.fileType,fileData.filePath);
  [err,res,rmRes] = await handleAll(d_base.deleteFile(fileId),rmFile(filePath));
  if(err){
    console.log(err);
    log.info(`[文件资源] 删除文件${fileId}失败 ${err.message}`);
    return [{eCode:codeMap.SaveError,eMsg:`删除文件失败`},null];
  }
  return [null,true];
}


async function getBaseData(){
  // 同时获取所有需要获取的基础数据
  let err,pType,nType,carousel;
  // todo 同时获取所有需要获取的基础数据
  [err,pType,nType,carousel] = await handleAll(
    d_product.loadTypes(),
    d_news.loadTypes(),
    d_base.getCarousel({state: dbField.db_base.carouselState.enable}),
  );
  if (err) {
    log.error(`[基础数据] 获取基础数据类型分类失败 ${err.message}`);
    return [{eCode: codeMap.ServerError, eMsg: `获取基础数据失败`}, null];
  }
  // 合并数据
  let baseData = {
    pType,
    nType,
    carousel,
  };
  // 轮播数据转换
  carousel = carousel.map(item=>{
    item.filePath = filePathToUrl(item.fileType,item.filePath);
    return item;
  });
  log.info(`[基础数据] 类型分类获取成功
                程序类型数量:${pType.length}
                文章类型数量:${nType.length}
                轮播数据数量:${carousel.length}
                `);
  return [null,baseData];
}
module.exports = {
  getEnableCarousel,
  getAllCarousel,
  addCarousel,
  deleteCarousel,
  updateCarousel,
  uploadFile,
  searchFiles,
  deleteFile,
  getBaseData,

}