package redis

import (
	"context"
	"fmt"
	"time"

	goredis "github.com/redis/go-redis/v9"
)

const Nil = goredis.Nil

var Client *goredis.Client

type Config struct {
	Host     string
	Port     int
	Password string
	DB       int
}

func Init(c Config) error {
	client, err := New(c)
	if err != nil {
		return err
	}
	Client = client
	return nil
}

func New(c Config) (*goredis.Client, error) {
	if c.Host == "" {
		return nil, fmt.Errorf("redis: Host is empty")
	}
	if c.Port == 0 {
		c.Port = 6379
	}

	client := goredis.NewClient(&goredis.Options{
		Addr:     fmt.Sprintf("%s:%d", c.Host, c.Port),
		Password: c.Password,
		DB:       c.DB,
	})

	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
	defer cancel()

	if err := client.Ping(ctx).Err(); err != nil {
		_ = client.Close()
		return nil, fmt.Errorf("redis ping: %w", err)
	}

	return client, nil
}

func GetRedisKey(key string) string {
	return key
}