'use strict';

const BaseService = require('./base.js');

// 配置类
class ConfigsService extends BaseService {

  /**
   * [cacheKey 缓存键]
   * @return {[type]} [description]
   */
  get cacheKey() {
    return `${process.env.APP_CUSTOME || 'universal'}_configs`;
  }

  /**
   * [cacheTime 缓存时间]
   * @return {[type]} [description]
   */
  get cacheTime() {
    return 10 * 60;
  }

  /**
   * [getConfig 获取单行配置]
   * @author    szjcomo
   * @date        2021-03-20
   * @param  {[type]}     field_index [description]
   * @return {[type]}                 [description]
   */
  async getConfig(field_index = null) {
    const that = this;
    const configs = await that.getConfigAll();
    let result = false;
    configs.forEach(item => {
      if (item.field_index === field_index) result = item;
    });
    return result;
  }

  /**
   * [getConfigValue 只获配置项的值]
   * @author    szjcomo
   * @date        2021-03-20
   * @param  {[type]}     field_index [description]
   * @return {[type]}                 [description]
   */
  async getConfigValue(field_index = null) {
    const that = this;
    const configs = await that.getConfigAll();
    let result = null;
    configs.forEach(item => {
      if (item.field_index === field_index) result = item.field_value;
    });
    return result;
  }

  /**
   * [getConfigMoreValue 获取多个配置的值]
   * @author    szjcomo
   * @date        2021-03-20
   * @param  {Array}      keys [description]
   * @return {[type]}          [description]
   */
  async getConfigMoreValue(keys = []) {
    const that = this;
    const configs = await that.getConfigAll();
    const result = {};
    configs.forEach(item => {
      keys.forEach(childItem => {
        if (childItem === item.field_index) {
          result[childItem] = item.field_value;
        }
      });
    });
    return result;
  }

  /**
   * 获取配置的分佣比例数值
   * @return {Promise<number>}
   */
  async getCommissionRatio() {
    const that = this;
    const config = await that.getConfigMoreValue([ 'shop_commission_ratio' ]);
    if (config.shop_commission_ratio) {
      return Number(config.shop_commission_ratio);
    }
    return 0;
  }


  /**
   * [getConfigGroup 获取一组配置项]
   * @author    szjcomo
   * @date        2021-03-20
   * @param  {[type]}     group [description]
   * @return {[type]}           [description]
   */
  async getConfigGroup(group = null) {
    const that = this;
    const configs = await that.getConfigAll();
    const result = [];
    configs.forEach(item => {
      if (item.field_group === group) result.push(item);
    });
    return result;
  }


  /**
   * [getConfigAll 获取所有配置]
   * @author    szjcomo
   * @date        2021-03-20
   * @return {[type]}     [description]
   */
  async getConfigAll() {
    const that = this;
    let result = await that.service.redis.get(that.cacheKey);
    if (!result) {
      result = await that.app.model.Configs.findAll({
        attributes: {
          exclude: [ 'create_time', 'update_time', 'admin_id', 'field_sort', 'field_desc', 'field_options' ],
        }, where: { field_status: 1 },
      });
      if (result) await that.service.redis.set(that.cacheKey, result, that.cacheTime);
    }
    return result;
  }

  /**
   * [clear 清除配置缓存]
   * @author    szjcomo
   * @date        2021-03-20
   * @return {[type]}     [description]
   */
  async clear() {
    const that = this;
    const res = await that.service.redis.del(that.cacheKey);
    return res;
  }
}


module.exports = ConfigsService;