package globals

import (
	"log/slog"
	"net"
	"platform/pkg/env"
	"platform/web/core"

	"github.com/go-redsync/redsync/v4/redis/goredis/v9"

	"github.com/go-redsync/redsync/v4"
	"github.com/redis/go-redis/v9"
)

var Redis *redis.Client
var Redsync *ExtendRedSync

type ExtendRedSync struct {
	*redsync.Redsync
}

func initRedis() error {
	client := redis.NewClient(&redis.Options{
		Addr:     net.JoinHostPort(env.RedisHost, env.RedisPort),
		Password: env.RedisPassword,
	})

	pool := goredis.NewPool(client)
	sync := redsync.New(pool)

	Redis = client
	Redsync = &ExtendRedSync{sync}

	return nil
}

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

func (r *ExtendRedSync) WithLock(key string, callback func() error) error {
	var mutex = Redsync.NewMutex(key)
	var err = mutex.Lock()
	if err != nil {
		return core.NewServErr("服务繁忙，请稍后重试")
	}
	defer func(mutex *redsync.Mutex) {
		if ok, err := mutex.Unlock(); err != nil {
			slog.Error("解锁失败", slog.Bool("ok", ok), slog.Any("err", err))
		}
	}(mutex)

	return callback()
}