'use strict';


const assert = require('assert');
const _ = require('lodash');
const { ObjectId } = require('mongoose').Types;
const { CrudService } = require('naf-framework-mongoose/lib/service');
const { BusinessError, ErrorCode } = require('naf-core').Error;

class MaterialscoreService extends CrudService {
  constructor(ctx) {
    super(ctx, 'materialscore');
    this.model = this.ctx.model.Materialscore;
    this.mmodel = this.ctx.model.Material;
  }

  async create(data) {
    const { materialid, score } = data;
    const material = await this.mmodel.findById(materialid);
    let newscore;
    if (!material.score) {
      newscore = score;
    } else {
      const _score = material.score;
      const number = await this.model.count({ materialid });
      newscore = (Number(_score) * number + Number(score)) / (number + 1);

    }
    material.score = newscore;
    await material.save();
    return await this.model.create(data);
  }

}

module.exports = MaterialscoreService;