const d_product = require('../database/d_product');
const {searchHandle} = require('../tools/searchSql');
const {handle} = require('../tools/handle_cjs');
const codeMap = require("../map/rcodeMap");
const log = require("../logger").logger("c_product","info")
const time = require("../tools/time_cjs")
const typeTool = require("../tools/typeTool_cjs");
/**
 * 加载产品
 * @param key 产品类别
 * @param p 页码
 * @param l 每页数量
 * @returns {Promise<*[]>} [err,res]
 */
async function loadProduct(key,p,l)
{
  p = p || 1;
  l = l || 10;
  let [err,res] = await handle(d_product.loadProducts(key, p, l));
  if(err){
    return [err,null];
  }
  return [null,res];
}

/**
 * 获取产品信息
 * @param id 产品id
 * @returns {Promise<*[]>}
 */
async function getProductInfo(id, lang = 'zh')
{
  log.info(`获取产品信息:${id}`);
  let productInfoPromise = d_product.getProductInfo(id)
  let [err,res] = await handle(productInfoPromise);
  if(err){
    console.log(err)
    return [err,null];
  }
  let products = res;
  let data = {};
  if(products.length){
    data = products[0];
  }else{
    return [
      {
        eCode: codeMap.NotFound,
        eMsg: `无法找到对应产品`
      }, null]
  }
  if(data.sub_img){
    data.sub_images = data.sub_img.split(';');
  }else {
    data.sub_images = [];
  }

  // todo 英文字段支持
  return [null,data];
}

async function addProduct(product)
{

  product.sub_img = product.sub_images.join(';');
  // 获取产品分类
  let [err,res] = await handle(d_product.getTypeByKey(product.type))
  if(err){
    log.error(`无法获取产品分类:${product.type}`)
    log.error(err)
    return [err,null];
  }
  if(!res.length){
    log.error(`无法获取产品分类:${product.type}`)
    return [
      {
        eCode: codeMap.NotFound,
        eMsg: `无法找到对应产品分类`
      }, null]
  }
  let typeId = res[0].type_id;
  [err,res] = await handle(d_product.addProduct(product, typeId));
  if(err){
    log.error(`添加产品失败:${JSON.stringify(product)}`)
    log.error(err)
    return [err,null];
  }
  console.log(res)
  return [null,res];
}

async function editProduct(product)
{

  product.sub_img = product.sub_images.join(';');
  let [err,res] = await handle(d_product.getTypeByKey(product.type))
  if(err){
    log.error(`无法获取产品分类 ${product.type}`)
    log.error(err)
    return [err,null];
  }
  let typeId = res[0].type_id;

  [err,res] = await handle(d_product.editProduct(product, typeId, product.proid));
  if(err){
    log.error(`更新产品失败:${JSON.stringify(product)}`)
    log.error(err)
    return [err,null];
  }
  return [null,res];

}

async function deleteProduct(id)
{
  // 寻找产品
  let [err,res] = await handle(d_product.getProductInfo(id));
  if(err){
    log.error(`无法获取产品信息:${id}`)
    log.error(err)
    return [err,null];
  }
  if(!res.length){
    log.error(`无法获取产品信息:${id}`)
    return [
      {
        eCode: codeMap.NotFound,
        eMsg: `无法找到对应产品`
      }, null]
  }

  [err,res] = await handle(d_product.deleteProduct(id));
  if(err){
    log.error(`删除产品失败:${id}`)
    log.error(err)
    return [err,null];
  }
  return [null,res];
}

async function searchProduct(type, key, p, l)
{
  p = p || 1;
  l = l || 10;
  let _params = {
  }
  if(type !== 'all'){
    _params.type = type;
  }
  if(key){
    _params.key = key
  }

 return searchHandle(
   '搜索产品失败',
   d_product.searchProducts,
   _params,
   null,
   p,
   l);
}

async function searchProductByMini(type, key, p, l){
  p = p || 1;
  l = l || 10;
  let _params = {
  }
  if(type !== 'all'){
    _params.type = type;
  }
  if(key){
    _params.key = key
  }

  return searchHandle(
    '搜索产品失败',
    d_product.searchProductsByMini,
    _params,
    null,
    p,
    l);
}

// 获取产品类型
async function getProductTypes()
{
  let [err,res] = await handle(d_product.getProductTypeList());
  if(err){
    return [err,null];
  }

  return [null,res];
}

async function editType( id, productType)
{
  // 判断类别关键字是否重复
  let [err,res] = await handle(d_product.getTypeByKey(productType.type_key))
  if(err){
    return [err,null];
  }
  if(res.length){
    let nowType = res.find(item => typeTool.toNumber(item.type_id) === typeTool.toNumber(id))
    if(!nowType){
      return [
        {
          eCode:codeMap.DataRepeat,
          eMsg:`类型关键字重复`
        },null]
    }
  }
  [err,res] = await handle(d_product.editProductType(id, productType));
  if(err){
    return [err,null];
  }
  return [null,res];
}

async function addType( productType)
{
  // 判断类别关键字是否重复
  let [err,res] = await handle(d_product.getTypeByKey(productType.type_key))
  if(err){
    return [err,null];
  }
  if(res.length){
    return [
      {
        eCode:codeMap.DataRepeat,
        eMsg:`产品类型关键字重复`
      },null]
  }
  // 数据校验
  [err,res] = await handle(d_product.addProductType( productType));
  if(err){
    return [err,null];
  }
  return [null,res];
}

// 删除产品类型
async function deleteType(id) {
  let err, res;

  // 检索产品类型下是否有产品
  [err, res] = await handle(d_product.getProductByTypeId(id));
  if (err) {
    // 删除失败
    log.error('[移除产品分类] 无法找到产品' + err.message);
    return [err, null];
  }
  if (res.length > 0) {
    // 存在产品
    log.warn('[移除产品分类] 存在产品，无法删除');
    return [
      {
        eCode: codeMap.NotPermission,
        eMsg: `该类型下存在产品，无法删除, 请先移除对应产品`
      }, null];
  }
  [err, res] = await handle(d_product.deleteProductType(id));
  if (err) {
    log.error('删除失败' + err.message);
    return [err, null];
  }
  return [null,res];

}


module.exports = {
  loadProduct,
  getProductInfo,
  addProduct,
  editProduct,
  deleteProduct,
  searchProduct,
  searchProductByMini,
  getProductTypes,
  editType,
  addType,
  deleteType
};