package nnet

import (
	"sync"
	"time"
)

var (
	//
	DefHubConfig = HubConfig{
		SizeOfSendChan: 1024,
		SizeOfRecvChan: 1024,
		ReadBufSize:    2048,
		WriteBufSize:   2048,
		Timeout:        3 * time.Second,
		Tick:           10 * time.Second,
		ReadTimeout:    12 * time.Second, // should greater than Tick
	}
)

type HubConfig struct {
	SizeOfSendChan uint32
	SizeOfRecvChan uint32
	ReadBufSize    int           // used in websocket
	WriteBufSize   int           // used in websocket
	Timeout        time.Duration // for write && listener
	Tick           time.Duration // heartbeat callback interval
	ReadTimeout    time.Duration // read timeout
}

type IHub interface {
	Lock() // support locker semantics
	Unlock()

	Wg() *sync.WaitGroup        // for waiting goroutines quit
	ChQuit() <-chan struct{}    // notify to quit
	Conf() *HubConfig           //
	Callback() ISessionCallback // callback impl
	Protocol() IProtocol        // protocol impl

	Start() error // start hub
	Stop() error  // stop hub
	DoJob(int)    // not used now

	NewConnection(string, uint64) error
	StartReconn()

	PutSession(uint64, ISession) error // session management base on id
	DelSession(uint64) error
	GetSession(uint64) (ISession, error)
	PeekSession(uint64) (ISession, error)
	RandSession() (ISession, error)
	GetSessionNum() int
	GetAllSessions() map[uint64]ISession
}