package svc

import (
	"errors"
	"fmt"
)

// HandleDistributedLockForVideo 处理短视频更新时获取锁和释放锁 如果加锁成功，使用语句 ` defer cb() ` 释放锁
func HandleDistributedLockForComm(uid, fix, requestIdPrefix string) (cb func(), err error) {
	// 获取虚拟币更新锁
	balanceLockKey := fmt.Sprintf(fix, uid)
	requestId := GetDistributedLockRequestId(requestIdPrefix)
	balanceLockOk := TryGetDistributedLock(balanceLockKey, requestId, true)
	if !balanceLockOk {
		return nil, errors.New("系统繁忙，请稍后再试")
	}

	cb = func() {
		_, _ = ReleaseDistributedLock(balanceLockKey, requestId)
	}

	return cb, nil
}