import { createClient, type RedisClientType } from 'redis'

let redisClientPromise: Promise<RedisClientType> | null = null

export async function getRedisClient() {
  if (!redisClientPromise) {
    const config = useRuntimeConfig()
    const client = createClient({
      url: config.redisUrl || 'redis://127.0.0.1:6379'
    })

    client.on('error', (error) => {
      console.error('Redis connection error', error)
    })

    redisClientPromise = client.connect().then(() => client)
  }

  return redisClientPromise
}