package redisx

import (
	"context"
	"errors"
	"time"

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

var (
	Client *redis.Client
)

func Set(key string, value interface{}, expire time.Duration) error {
	return Client.Set(context.Background(), key, value, expire).Err()
}

// Get 获取任意 key 的值，返回 string
func Get(key string) (string, error) {
	val, err := Client.Get(context.Background(), key).Result()
	if errors.Is(err, redis.Nil) {
		return "", nil
	}
	return val, err
}

// Delete 删除任意 key
func Delete(key string) error {
	return Client.Del(context.Background(), key).Err()
}

// Exists 判断 key 是否存在
func Exists(key string) (bool, error) {
	cnt, err := Client.Exists(context.Background(), key).Result()
	if err != nil {
		return false, err
	}
	return cnt > 0, nil
}