package connections

import (
	"crypto/rsa"
	"cwtch.im/cwtch/protocol"
	"cwtch.im/cwtch/server/fetch"
	"cwtch.im/cwtch/server/send"
	"github.com/s-rah/go-ricochet"
	"github.com/s-rah/go-ricochet/channels"
	"github.com/s-rah/go-ricochet/connection"
	"github.com/s-rah/go-ricochet/identity"
	"github.com/s-rah/go-ricochet/utils"
	"net"
	"testing"
	"time"
)

func ServerAuthValid(string, rsa.PublicKey) (allowed, known bool) {
	return true, true
}

type TestServer struct {
	connection.AutoConnectionHandler
	Received bool
}

func (ts *TestServer) HandleGroupMessage(gm *protocol.GroupMessage) {
	ts.Received = true
}

func (ts *TestServer) HandleFetchRequest() []*protocol.GroupMessage {
	return []*protocol.GroupMessage{{Ciphertext: []byte("hello"), Spamguard: []byte{}}, {Ciphertext: []byte("hello"), Spamguard: []byte{}}}
}

func runtestserver(t *testing.T, ts *TestServer, privateKey *rsa.PrivateKey) {
	ln, _ := net.Listen("tcp", "127.0.0.1:5451")
	conn, _ := ln.Accept()
	defer conn.Close()

	rc, err := goricochet.NegotiateVersionInbound(conn)
	if err != nil {
		t.Errorf("Negotiate Version Error: %v", err)
	}
	rc.TraceLog(true)
	err = connection.HandleInboundConnection(rc).ProcessAuthAsServer(identity.Initialize("", privateKey), ServerAuthValid)
	if err != nil {
		t.Errorf("ServerAuth Error: %v", err)
	}

	ts.RegisterChannelHandler("im.cwtch.server.send", func() channels.Handler {
		server := new(send.CwtchServerSendChannel)
		server.Handler = ts
		return server
	})

	ts.RegisterChannelHandler("im.cwtch.server.fetch", func() channels.Handler {
		server := new(fetch.CwtchServerFetchChannel)
		server.Handler = ts
		return server
	})

	rc.Process(ts)
}

func TestPeerServerConnection(t *testing.T) {
	privateKey, err := utils.GeneratePrivateKey()
	if err != nil {
		t.Errorf("Private Key Error %v", err)
	}

	ts := new(TestServer)
	ts.Init()
	go runtestserver(t, ts, privateKey)
	onionAddr, err := utils.GetOnionAddress(privateKey)
	if err != nil {
		t.Errorf("Error getting onion address: %v", err)
	}
	psc := NewPeerServerConnection("127.0.0.1:5451|" + onionAddr)
	numcalls := 0
	psc.GroupMessageHandler = func(s string, gm *protocol.GroupMessage) {
		numcalls++
	}
	state := psc.GetState()
	if state != DISCONNECTED {
		t.Errorf("new connections should start in disconnected state")
	}
	time.Sleep(time.Second * 1)
	go psc.Run()
	time.Sleep(time.Second * 2)
	state = psc.GetState()
	if state != AUTHENTICATED {
		t.Errorf("connection should now be authed(%v), instead was %v", AUTHENTICATED, state)
	}

	gm := &protocol.GroupMessage{Ciphertext: []byte("hello")}
	psc.SendGroupMessage(gm)
	time.Sleep(time.Second * 2)
	if ts.Received == false {
		t.Errorf("Should have received a group message in test server")
	}

	if numcalls != 2 {
		t.Errorf("Should have received 2 calls from fetch request, instead received %v", numcalls)
	}

}