package peer

import "testing"

func TestStateServer_peerUpdate(t *testing.T) {
	h := NewPeerStateTestHarness()
	h.ConfigServer_Public(t)
	h.PeerUpdate(nil)
	assertType[*stateDisconnected](t, h.State)
}

func TestStateServer_onInit(t *testing.T) {
	h := NewPeerStateTestHarness()
	h.ConfigServer_Public(t)

	msg := controlMsg[packetInit]{
		SrcIP:   3,
		SrcAddr: addrPort4(1, 2, 3, 4, 1000),
		Packet: packetInit{
			TraceID: newTraceID(),
			Direct:  true,
			Version: 4,
		},
	}

	h.OnInit(msg)
	assertEqual(t, len(h.Sent), 1)
	assertEqual(t, h.Sent[0].Peer.DirectAddr, msg.SrcAddr)
	resp := assertType[packetInit](t, h.Sent[0].Packet)
	assertEqual(t, msg.Packet.TraceID, resp.TraceID)
	assertEqual(t, resp.Version, version)
}

func TestStateServer_onSynDirect(t *testing.T) {
	h := NewPeerStateTestHarness()
	h.ConfigServer_Public(t)

	msg := controlMsg[packetSyn]{
		SrcIP:   3,
		SrcAddr: addrPort4(1, 2, 3, 4, 1000),
		Packet: packetSyn{
			TraceID: newTraceID(),
			Direct:  true,
		},
	}

	msg.Packet.PossibleAddrs[0] = addrPort4(1, 1, 1, 1, 1000)
	msg.Packet.PossibleAddrs[1] = addrPort4(1, 1, 1, 2, 2000)

	h.OnSyn(msg)
	assertEqual(t, len(h.Sent), 1)
	assertEqual(t, h.Sent[0].Peer.DirectAddr, msg.SrcAddr)
	resp := assertType[packetAck](t, h.Sent[0].Packet)
	assertEqual(t, msg.Packet.TraceID, resp.TraceID)
}

func TestStateServer_onSynRelayed(t *testing.T) {
	h := NewPeerStateTestHarness()
	h.ConfigServer_Relayed(t)

	msg := controlMsg[packetSyn]{
		SrcIP:   3,
		SrcAddr: addrPort4(1, 2, 3, 4, 1000),
		Packet: packetSyn{
			TraceID: newTraceID(),
		},
	}

	msg.Packet.PossibleAddrs[0] = addrPort4(1, 1, 1, 1, 1000)
	msg.Packet.PossibleAddrs[1] = addrPort4(1, 1, 1, 2, 2000)

	h.OnSyn(msg)
	assertEqual(t, len(h.Sent), 3)
	assertEqual(t, h.Sent[0].Peer.DirectAddr, msg.SrcAddr)
	resp := assertType[packetAck](t, h.Sent[0].Packet)
	assertEqual(t, msg.Packet.TraceID, resp.TraceID)

	for i, pkt := range h.Sent[1:] {
		assertEqual(t, pkt.Peer.DirectAddr, msg.Packet.PossibleAddrs[i])
		assertType[packetProbe](t, pkt.Packet)
	}
}