package server

import (
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gorilla/websocket"
	"github.com/stretchr/testify/require"

	"github.com/tendermint/tendermint/libs/log"
	types "github.com/tendermint/tendermint/rpc/jsonrpc/types"
)

func TestWebsocketManagerHandler(t *testing.T) {
	s := newWSServer()
	defer s.Close()

	// check upgrader works
	d := websocket.Dialer{}
	c, dialResp, err := d.Dial("ws://"+s.Listener.Addr().String()+"/websocket", nil)
	require.NoError(t, err)

	if got, want := dialResp.StatusCode, http.StatusSwitchingProtocols; got != want {
		t.Errorf("dialResp.StatusCode = %q, want %q", got, want)
	}

	// check basic functionality works
	req, err := types.MapToRequest(
		types.JSONRPCStringID("TestWebsocketManager"),
		"c",
		map[string]interface{}{"s": "a", "i": 10},
	)
	require.NoError(t, err)
	err = c.WriteJSON(req)
	require.NoError(t, err)

	var resp types.RPCResponse
	err = c.ReadJSON(&resp)
	require.NoError(t, err)
	require.Nil(t, resp.Error)
	dialResp.Body.Close()
}

func newWSServer() *httptest.Server {
	funcMap := map[string]*RPCFunc{
		"c": NewWSRPCFunc(func(ctx *types.Context, s string, i int) (string, error) { return "foo", nil }, "s,i"),
	}
	wm := NewWebsocketManager(funcMap)
	wm.SetLogger(log.TestingLogger())

	mux := http.NewServeMux()
	mux.HandleFunc("/websocket", wm.WebsocketHandler)

	return httptest.NewServer(mux)
}
