package p2p

import (
	p2p_host "github.com/libp2p/go-libp2p-host"
	peer "github.com/libp2p/go-libp2p-peer"
)

//go:generate mockgen -source host.go -destination=host/mock/host_mock.go

// Host is the client + server in p2p network.
type Host interface {
	GetSelfPeer() Peer
	SendMessage(Peer, []byte) error
	BindHandlerAndServe(handler StreamHandler)
	Close() error
	AddPeer(*Peer) error
	GetID() peer.ID
	GetP2PHost() p2p_host.Host

	// SendMessageToGroups sends a message to one or more multicast groups.
	SendMessageToGroups(groups []GroupID, msg []byte) error

	// GroupReceiver returns a receiver of messages sent to a multicast group.
	// Each call creates a new receiver.
	// If multiple receivers are created for the same group,
	// a message sent to the group will be delivered to all of the receivers.
	GroupReceiver(GroupID) (receiver GroupReceiver, err error)
}