module.exports = {
  getData: getData,
  updateItem:updateItem
};

let mongoose = require('mongoose');
let divideModel = mongoose.model("divide_setting");
let consts = require('../models/project_consts');
let projectConsts = consts.projectConst;
const uuidV1 = require('uuid/v1');


async function updateItem(data){
  let ID = data.ID;
  let tasks= [];
  for(let u of data.updateDatas){
    if(u.type == 'add'){
      tasks.push({updateOne: {filter: {ID: ID}, update: {"$push":{divideList:u.doc} }}});
    }
    if(u.type == "update"){
      let ndoc = {};
      let pre = "divideList.$."
      for(let key in u.doc){
        ndoc[pre+key] = u.doc[key]
      }
      tasks.push({updateOne: {filter: {"ID": ID,"divideList.ID":u.ID}, update: ndoc}});
    }
    if(u.type == "delete"){
      tasks.push({updateOne: {filter: {ID: ID}, update: {"$pull":{divideList:{ID:u.ID}} }}});
      if(u.itemType == "定额"){
        await divideModel.update(
          {ID:ID},
          { $pull: {ration_gljs:{rationID:u.ID},ration_coes:{rationID:u.ID}}},
          { multi: true })
      }
    }

  }

  if(tasks.length > 0) await divideModel.bulkWrite(tasks);



  return data;
}


function getData(projectID, callback) {
  divideModel.findOne({projectID: projectID}, '-_id', async function (err, datas) {
    if (!err) {
        // 旧项目没有人工系数文件，默认给它生成一个。
        if (!datas) {
          datas = {
            ID: uuidV1(),
            projectID:projectID,
            divideList:[],
            ration_gljs:[],
            ration_coes:[],
            bills:[]
          }
          await divideModel.create(datas);
          callback(0, projectConsts.DIVIDE_SETTING, datas);
        } else {
            callback(0, projectConsts.DIVIDE_SETTING, datas);
        };
    } else {
        callback(1, projectConsts.DIVIDE_SETTING, null);
    };
  });



}