package redis

import (
	"fmt"
	"github.com/go-redis/redis"
	"os"
	"strconv"
	"time"
	"wss-pool/config"
	"wss-pool/logging/applogger"
)

var RedisClient *redis.Client
var RedisClientMap = map[string]*redis.Client{}

// RedisInit init Redis
func RedisInit(db int) *redis.Client {
	addr := fmt.Sprintf("%v:%v", config.Config.Redis.Server, config.Config.Redis.Port)
	client := redis.NewClient(&redis.Options{
		Addr:     addr,
		DB:       db,                           // use default DB
		Password: config.Config.Redis.PassWord, // no password set
	})
	_, err := client.Ping().Result()
	if err != nil {
		applogger.Error("Failed to connect to Redis, terminating startup err: %v", err)
		return nil
	} else {
		applogger.Info("redis init success")
	}

	return client
}

func RedisInitMap(dbs []string) {
	RedisClientMap = make(map[string]*redis.Client)
	for key, db := range dbs {
		dbInt, _ := strconv.Atoi(db)                                   // 表库
		server := config.Config.Redis.Server                           // Ip
		password := config.Config.Redis.PassWord                       // 密码
		addr := fmt.Sprintf("%v:%v", server, config.Config.Redis.Port) // 0.0.0.0:6379
		client := redis.NewClient(&redis.Options{
			Addr:     addr,
			DB:       dbInt,
			Password: password,
		})
		_, err := client.Ping().Result()
		if err != nil {
			os.Exit(dbInt)
		} else {
			applogger.Info("redis init success")
		}
		if key == 0 {
			RedisClient = client
		}
		RedisClientMap[server] = client
	}
}

// TODO: 初始化多个Redis客户端
func RedisInitMapList(addrList map[string]string) {
	RedisClientMap = make(map[string]*redis.Client)
	for addr, password := range addrList {
		client := redis.NewClient(&redis.Options{
			Addr:     addr,
			DB:       0,
			Password: password,
		})
		_, err := client.Ping().Result()
		if err != nil {
			os.Exit(0)
		} else {
			applogger.Info("redis init success")
		}
		RedisClientMap[addr] = client
	}
}

// Get_Cache_Data Query data through key
func Get_Cache_Data(key string) (string, error) {
	rge, err := RedisClient.Get(key).Result()
	if err != nil {
		applogger.Error("Redis Get err: %v", err)
		return "", err
	}

	return rge, nil
}

// Get_Cache_Data Query data through key

func Get_Cache_Byte(key string) ([]byte, error) {
	rge, err := RedisClient.Get(key).Bytes()
	if err != nil {
		applogger.Error("Redis Get err: %v", err)
		return rge, err
	}

	return rge, nil
}

// Set_Cache_Data Set the key lifecycle
func Set_Cache_Data(key string, value interface{}, td int) error {
	if err := RedisClient.Set(key, value, time.Duration(td)*time.Minute).Err(); err != nil {
		applogger.Error("Redis Set err: %v", err)
		return err
	}
	return nil
}

// Get_Cache_Keys Query all keys
func Get_Cache_Keys() ([]string, error) {
	rge, err := RedisClient.Keys("*").Result()
	if err != nil {
		applogger.Error("Redis Get err: %v", err)
		return []string{}, err
	}

	return rge, nil
}

// Get_Cache_Count Query the total number of Redis
func Get_Cache_Count(key string) (int64, error) {
	rge, err := RedisClient.DbSize().Result()
	if err != nil {
		applogger.Error("RedisClient DbSize err：%v", err)
		return rge, err
	}
	return rge, nil
}

// Set_Cache_Value persistent data
func Set_Cache_Value(key, value string) error {
	if err := RedisClient.Set(key, value, 0).Err(); err != nil {
		applogger.Error("Redis Set err: %v", err)
		return err
	}
	return nil
}

func HsetMap(key, field string, value interface{}) {
	for k, db := range RedisClientMap {
		applogger.Info("key", key, "field", field, "value", value, "DB", k)
		err := db.HSet(key, field, value).Err()
		if err != nil {
			fmt.Println("db", k, "存储失败:", err)
		}
	}
}

func PublishMap(channel string, message interface{}) {
	for k, db := range RedisClientMap {
		applogger.Info("channel", channel, "DB", k)
		err := db.Publish(channel, message).Err()
		if err != nil {
			fmt.Println("db", k, "存储失败:", err)
		}
	}
}

func ScanMap(prefix string) map[string][]string {
	scanMap := make(map[string][]string)
	for k, db := range RedisClientMap {
		var keys []string
		var err error
		keys, err = db.Keys(prefix + "*").Result()
		if err != nil {
			applogger.Error(err.Error())
		}
		scanMap[k] = keys
	}
	return scanMap
}

func HGetAllMap(db string, key string) (map[string]string, error) {
	return RedisClientMap[db].HGetAll(key).Result()
}

func Hset(key, field string, value interface{}) error {
	applogger.Info("key", key, "field", field, "value", value)
	err := RedisClient.HSet(key, field, value).Err()
	if err != nil {
		fmt.Println("存储失败:", err)
		return err
	}
	return nil
}

func Expire(key string, expiration time.Duration) error {
	err := RedisClient.Expire(key, expiration).Err()
	if err != nil {
		fmt.Println("设置过期时间:", err)
		return err
	}
	return nil
}
func Hget(key, field string) (string, error) {
	value, err := RedisClient.HGet(key, field).Result()
	if err != nil {
		return value, err
	}
	return value, nil
}
func HGetNew(key, field string, red *redis.Client) (string, error) {
	value, err := red.HGet(key, field).Result()
	if err != nil {
		return value, err
	}
	return value, nil
}

func HDel(key string, fields string) error {
	if err := RedisClient.HDel(key, fields).Err(); err != nil {
		fmt.Println("del error:", err)
		return err
	}
	return nil
}

func HGetAll(key string) (map[string]string, error) {
	return RedisClient.HGetAll(key).Result()
}

func Scan(prefix string) []string {
	var keys []string
	var err error
	keys, err = RedisClient.Keys(prefix + "*").Result()
	if err != nil {
		applogger.Error(err.Error())
	}
	//fmt.Println(keys)
	return keys
}