package registry

import (
	"encoding/json"
	"math/rand"
	"strings"
	"testing"

	"github.com/nspcc-dev/neo-go/pkg/io"
	"github.com/stretchr/testify/require"
)

func BenchmarkObjectInfoMarshal(b *testing.B) {
	obj := randomObjectInfo()
	b.Run("json", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			_, err := json.Marshal(obj)
			if err != nil {
				b.FailNow()
			}
		}
	})
	b.Run("native", func(b *testing.B) {
		for i := 0; i < b.N; i++ {
			_, err := obj.Marshal()
			if err != nil {
				b.FailNow()
			}
		}
	})
}

func BenchmarkObjectInfoUnmarshal(b *testing.B) {
	obj := randomObjectInfo()

	b.Run("json", func(b *testing.B) {
		data, err := json.Marshal(obj)
		require.NoError(b, err)

		for i := 0; i < b.N; i++ {
			var obj ObjectInfo
			err := json.Unmarshal(data, &obj)
			if err != nil {
				b.FailNow()
			}
		}
	})
	b.Run("native", func(b *testing.B) {
		data, err := obj.Marshal()
		require.NoError(b, err)

		for i := 0; i < b.N; i++ {
			err := obj.Unmarshal(data)
			if err != nil {
				b.FailNow()
			}
		}
	})
}

func TestObjectInfoMarshal(t *testing.T) {
	expected := randomObjectInfo()

	data, err := expected.Marshal()
	require.NoError(t, err)

	var actual ObjectInfo
	require.NoError(t, actual.Unmarshal(data))
	require.Equal(t, expected, actual)
}

func TestObjectInfoEncodeBinary(t *testing.T) {
	expected := randomObjectInfo()

	w := io.NewBufBinWriter()
	expected.EncodeBinary(w.BinWriter)
	require.NoError(t, w.Err)

	data := w.Bytes()
	r := io.NewBinReaderFromBuf(data)

	var actual ObjectInfo
	actual.DecodeBinary(r)
	require.NoError(t, r.Err)
	require.Equal(t, expected, actual)
}

func randomObjectInfo() ObjectInfo {
	return ObjectInfo{
		CreatedAt:   int64(rand.Uint64()),
		Status:      statusCreated,
		Id:          rand.Uint64(),
		CID:         randString(32),
		OID:         randString(32),
		S3Bucket:    randString(32),
		S3Key:       randString(32),
		PayloadHash: randString(64),
	}
}

func randString(n int) string {
	var sb strings.Builder
	for i := 0; i < n; i++ {
		sb.WriteRune('a' + rune(rand.Int31())%('z'-'a'+1))
	}
	return sb.String()
}