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编辑当前文件:/home/freeclou/app.optimyar.com/backend/api/discount/services/discount.js

'use strict';

/**
 * Read the documentation (https://strapi.io/documentation/v3.x/concepts/services.html#core-services)
 * to customize this service
 */

module.exports = {
  getClientKey(data) {
    let {amount, code} = data;
    amount = amount / 65;
    return code.substr(0, 2) + amount.toString() + strapi.services.helpers.reverseString(code.substr(2));
  },
  async isValid(data) {
    const expectedKey = this.getClientKey(data);
    //other validations
    return expectedKey === data.key;
  },
  async create(data, {files} = {}) {
    data.key = strapi.services.helpers.reverseString(data.key);
    const entry = await strapi.query('discount').create(data);

// if (files) {
    //   // automatically uploads the files based on the entry and the model
    //   await strapi.entityService.uploadFiles(entry, files, {
    //     model: 'restaurant',
    //     // if you are using a plugin's model you will have to add the `plugin` key (plugin: 'users-permissions')
    //   });
    //   return this.findOne({ id: entry.id });
    // }
    return entry;
  },
  async verifyGetByCode(code) {
    const letterNumber = /^[0-9a-zA-Z_]+$/;
    if (code && !code.match(letterNumber)) {
      return {result: false, entity: "buyCourse.errors.invalidDiscount"};
    }
    //always verify result is a object : {result:boolean , message:any}
    const entity = await strapi.services.discount.findOne({code});
    if (entity == null) {
      return {result: false, entity: "buyCourse.errors.invalidDiscount"};
    }
    return this.verifyDiscountForUse(entity)
  },
  async verifyDiscountForUse(entity) {
    if (entity == null || !entity.isEnabled) {
      return {result: false, entity: "buyCourse.errors.invalidDiscount"};
    }
    if (!strapi.services.helpers.isNowBetweenDates(entity.fromDate, entity.toDate)) {
      return {result: false, entity: "buyCourse.errors.expiredDiscount"};
    }
    return {result: true, entity};
  },
  async verifyGetByCodeAndCourse(code, levelId) {
    const byCode = await this.verifyGetByCode(code);
    if (byCode.result === true) {
      if (byCode.entity.course_levels && byCode.entity.course_levels.length) {
        if (byCode.entity.course_levels.findIndex(l => l.id === levelId) === -1) {
          return {result: false, entity: "errors.discountNotForCourse"};
        }
        if (byCode.entity.maxUseCount) {
          const list = await strapi.services["user-course"].find(
            {
              course_levels: [levelId],
              discount: byCode.entity.id,
              isConfirm: true
            });
          if (list && list.length >= byCode.entity.maxUseCount) {
            return {result: false, entity: "errors.discountMaxUseCount"};
          }
        }
      }
    }
    return byCode;
  }
};