package internal

import (
	"context"
	"github.com/redis/go-redis/v9"
	"log"
	"os"
	"strconv"
)

var (
	redisInstance *redis.Client = nil
)

type Cache interface {
}

func InitRedis() *redis.Client {
	if redisInstance == nil {
		redis_db_num, err := strconv.Atoi(os.Getenv("REDIS_DATABASE"))
		if err != nil {
			log.Fatalln("REDIS_DATABASE should be integer")
		}
		redisInstance = redis.NewClient(&redis.Options{Addr: os.Getenv("REDIS_ADDRESS"), Password: os.Getenv("REDIS_PASSWORD"), DB: redis_db_num})
		_, conError := redisInstance.Ping(context.Background()).Result()
		if conError != nil {
			log.Fatalln("Cannot connect to redis host")
		}
	}
	return redisInstance
}