package redis

import (
	commonConfig "common/config"
	"context"
	"crypto/tls"
	"errors"
	"fmt"
	"github.com/redis/go-redis/v9"
	"time"
)

var (
	redisClient     *redis.Client
	redisNotInitErr = errors.New("redis is not initialized.")
	keyNotExist     = errors.New("key does not exist")
	Nil             = redis.Nil
)

func Init(cfg *commonConfig.RedisConfig) error {
	url := fmt.Sprintf("%s:%d", cfg.Host, cfg.Port)
	if cfg.Tls {
		redisClient = redis.NewClient(&redis.Options{
			Addr:        url,
			Password:    cfg.Auth,
			DB:          cfg.Db,
			DialTimeout: 20 * time.Second,
			Username:    cfg.UserName,
			TLSConfig:   &tls.Config{},
		})
	} else {
		redisClient = redis.NewClient(&redis.Options{
			Addr:        url,
			Password:    cfg.Auth,
			DB:          cfg.Db,
			DialTimeout: 20 * time.Second,
		})
	}

	ret := redisClient.Ping(context.Background())
	//p := redisClient.Pipeline()
	//l := p.HGetAll(xxx, xxx)
	//s := p.Get(xxx, xx)
	//p.Exec(xxx)
	return ret.Err()
}

func Close() error {
	if redisClient != nil {
		return redisClient.Close()
	}
	return nil
}

func GetRedisClient() *redis.Client {
	return redisClient
}