package util

import (
	"fmt"
	"github.com/go-redis/redis"
	"iot_manager_service/config"
	"time"
)

var Redis *redis.Client

func InitRedis() error {
	cfg := config.Instance()
	addr := cfg.Redis.Host
	Redis = redis.NewClient(&redis.Options{
		Addr:         addr,
		DialTimeout:  10 * time.Second,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 30 * time.Second,
		PoolSize:     10,
		PoolTimeout:  30 * time.Second,
		Password:     cfg.Redis.Password,
	})
	_, err := Redis.Ping().Result()
	if err != nil {
		return err
	}
	return nil
}

const (
	DeviceStateKey = "dev_state:%s"
)

func GetDeviceState(sn string) int {
	key := fmt.Sprintf(DeviceStateKey, sn)
	value, err := Redis.Get(key).Int()
	state := 2
	if err != nil {
		fmt.Printf("GetDeviceState err = %s \n", err)
		return state
	}
	if value == 1 {
		state = 1
	}
	return state
}