package options

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

	"github.com/nspcc-dev/neo-go/pkg/config/netmode"

	"github.com/stretchr/testify/require"
	"github.com/urfave/cli"
)

func TestGetNetwork(t *testing.T) {
	t.Run("privnet", func(t *testing.T) {
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		require.Equal(t, netmode.PrivNet, GetNetwork(ctx))
	})

	t.Run("testnet", func(t *testing.T) {
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		set.Bool("testnet", true, "")
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		require.Equal(t, netmode.TestNet, GetNetwork(ctx))
	})

	t.Run("mainnet", func(t *testing.T) {
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		set.Bool("mainnet", true, "")
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		require.Equal(t, netmode.MainNet, GetNetwork(ctx))
	})
}

func TestGetTimeoutContext(t *testing.T) {
	t.Run("default", func(t *testing.T) {
		start := time.Now()
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		actualCtx, _ := GetTimeoutContext(ctx)
		end := time.Now()
		dl, _ := actualCtx.Deadline()
		require.True(t, start.Before(dl) && dl.Before(end.Add(DefaultTimeout)))
	})

	t.Run("set", func(t *testing.T) {
		start := time.Now()
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		set.Duration("timeout", time.Duration(20), "")
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		actualCtx, _ := GetTimeoutContext(ctx)
		end := time.Now()
		dl, _ := actualCtx.Deadline()
		require.True(t, start.Before(dl) && dl.Before(end.Add(time.Nanosecond*20)))
	})
}

func TestGetRPCClient(t *testing.T) {
	// need test server for proper client.Init() handling
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		response := `{"id":1,"jsonrpc":"2.0","result":{"magic":42,"tcpport":20332,"wsport":20342,"nonce":2153672787,"useragent":"/NEO-GO:0.73.1-pre-273-ge381358/"}}`

		_, err := w.Write([]byte(response))
		if err != nil {
			t.Fatalf("Error writing response: %s", err.Error())
		}
	}))
	defer srv.Close()
	t.Run("no endpoint", func(t *testing.T) {
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		gctx, _ := GetTimeoutContext(ctx)
		_, ec := GetRPCClient(gctx, ctx)
		require.Equal(t, 1, ec.ExitCode())
	})

	t.Run("success", func(t *testing.T) {
		set := flag.NewFlagSet("flagSet", flag.ExitOnError)
		set.String(RPCEndpointFlag, srv.URL, "")
		ctx := cli.NewContext(cli.NewApp(), set, nil)
		gctx, _ := GetTimeoutContext(ctx)
		_, ec := GetRPCClient(gctx, ctx)
		require.Nil(t, ec)
	})

}