woomy-v2/bot/util/redis.js

const redis = require('redis')
const generators = require('redis-async-gen')

class Redis {
  constructor(client) {
    this.client = client;
  }

  init () {
    // Create redis client
    this.global = redis.createClient(this.client.config.redis)
    this.server = this.global.duplicate({ db: 1 })
    this.member = this.global.duplicate({ db: 2 })
    this.user = this.global.duplicate({ db: 3 })
  }

  // Deletes specified guild entry
  async deleteGuild (id) {
    this.server.del(id)
    var { keysMatching } = await generators.using(this.member)
    // eslint-disable-next-line no-unused-vars
    for await (const key of keysMatching(id + '-*')) {
      this.member.del(key)
    }
  }

  // Deletes specified user and their member entries in guilds
  async deleteUser (id) {
    this.user.del(id)
    var { keysMatching } = await generators.using(this.member)
    // eslint-disable-next-line no-unused-vars
    for await (const key of keysMatching('*-' + id)) {
      this.member.del(key)
    }
  }

  // Deletes member of user in specified guild
  async deleteMember (guildId, id) {
    this.member.del(guildId + '-' + id)
  }
}

module.exports = Redis