package engine

import (
	"context"
	"testing"

	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard"
	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
	"github.com/stretchr/testify/require"
)

func BenchmarkExists(b *testing.B) {
	b.Run("2 shards", func(b *testing.B) {
		benchmarkExists(b, 2)
	})
	b.Run("4 shards", func(b *testing.B) {
		benchmarkExists(b, 4)
	})
	b.Run("8 shards", func(b *testing.B) {
		benchmarkExists(b, 8)
	})
}

func benchmarkExists(b *testing.B, shardNum int) {
	e := testNewEngine(b).setShardsNum(b, shardNum).prepare(b).engine
	defer func() { require.NoError(b, e.Close(context.Background())) }()

	addr := oidtest.Address()
	for range 100 {
		obj := testutil.GenerateObjectWithCID(cidtest.ID())
		err := Put(context.Background(), e, obj, false)
		if err != nil {
			b.Fatal(err)
		}
	}

	b.ReportAllocs()
	b.ResetTimer()
	for range b.N {
		var shPrm shard.ExistsPrm
		shPrm.Address = addr
		shPrm.ParentAddress = oid.Address{}
		ok, _, err := e.exists(context.Background(), shPrm)
		if err != nil || ok {
			b.Fatalf("%t %v", ok, err)
		}
	}
}