package libnmdc

type HubConnectionOptions struct {
	Address       HubAddress
	SkipVerifyTLS bool // using a negative verb, because bools default to false
	Self          UserInfo
	NickPassword  string

	// Returning messages in async mode
	NumEventsToBuffer uint

	// Returning messages in sync mode
	OnEventSync func(HubEvent)
}

func (this *HubConnectionOptions) prepareConnection() *HubConnection {
	if this.Self.ClientTag == "" {
		this.Self.ClientTag = DEFAULT_CLIENT_TAG
	}

	hc := HubConnection{
		Hco:     this,
		HubName: DEFAULT_HUB_NAME,
		State:   CONNECTIONSTATE_DISCONNECTED,
		Users:   make(map[string]UserInfo),
	}

	return &hc
}

// Connects to an NMDC server, and spawns a background goroutine to handle
//  protocol messages. Client code should select on all the interface channels.
func (this *HubConnectionOptions) Connect() *HubConnection {

	if this.NumEventsToBuffer < 1 {
		this.NumEventsToBuffer = 1
	}

	hc := this.prepareConnection()
	hc.OnEvent = make(chan HubEvent, this.NumEventsToBuffer)
	hc.processEvent = func(ev HubEvent) {
		hc.OnEvent <- ev
	}

	go hc.worker()
	return hc
}

// Connects to an NMDC server, and blocks forever to handle protocol messages.
// Client code should supply an event handling function.
func (this *HubConnectionOptions) ConnectSync() {
	hc := this.prepareConnection()
	hc.worker()
}