package meta_test

import (
	"context"
	"encoding/hex"
	"math/rand"
	"strconv"
	"testing"

	v2object "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/object"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/testutil"
	meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
	cidSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/erasurecode"
	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/transformer"
	usertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user/test"
	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/version"
	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
	"github.com/stretchr/testify/require"
)

func TestDB_SelectUserAttributes(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	raw1 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw1, "foo", "bar")
	testutil.AddAttribute(raw1, "x", "y")

	err := putBig(db, raw1)
	require.NoError(t, err)

	raw2 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw2, "foo", "bar")
	testutil.AddAttribute(raw2, "x", "z")

	err = putBig(db, raw2)
	require.NoError(t, err)

	raw3 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw3, "a", "b")

	err = putBig(db, raw3)
	require.NoError(t, err)

	raw4 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw4, "path", "test/1/2")

	err = putBig(db, raw4)
	require.NoError(t, err)

	raw5 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw5, "path", "test/1/3")

	err = putBig(db, raw5)
	require.NoError(t, err)

	raw6 := testutil.GenerateObjectWithCID(cnr)
	testutil.AddAttribute(raw6, "path", "test/2/3")

	err = putBig(db, raw6)
	require.NoError(t, err)

	raw7 := testutil.GenerateObjectWithCID(cnr)
	var attr objectSDK.Attribute
	attr.SetKey("path")
	attr.SetValue("test/3/4")
	attrs := raw7.Attributes()
	attrs = append(attrs, attr)
	ech := objectSDK.NewECHeader(objectSDK.ECParentInfo{
		ID:         oidtest.ID(),
		Attributes: attrs,
	}, 0, 3, []byte{}, 0)
	raw7.SetECHeader(ech)
	require.NoError(t, putBig(db, raw7))
	var raw7Parent oid.Address
	raw7Parent.SetContainer(cnr)
	raw7Parent.SetObject(ech.Parent())

	fs := objectSDK.SearchFilters{}
	fs.AddFilter("foo", "bar", objectSDK.MatchStringEqual)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
		object.AddressOf(raw2),
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("x", "y", objectSDK.MatchStringEqual)
	testSelect(t, db, cnr, fs, object.AddressOf(raw1))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("x", "y", objectSDK.MatchStringNotEqual)
	testSelect(t, db, cnr, fs, object.AddressOf(raw2))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("a", "b", objectSDK.MatchStringEqual)
	testSelect(t, db, cnr, fs, object.AddressOf(raw3))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("c", "d", objectSDK.MatchStringEqual)
	testSelect(t, db, cnr, fs)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("foo", "", objectSDK.MatchNotPresent)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw3),
		object.AddressOf(raw4),
		object.AddressOf(raw5),
		object.AddressOf(raw6),
		object.AddressOf(raw7),
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("a", "", objectSDK.MatchNotPresent)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
		object.AddressOf(raw2),
		object.AddressOf(raw4),
		object.AddressOf(raw5),
		object.AddressOf(raw6),
		object.AddressOf(raw7),
	)

	fs = objectSDK.SearchFilters{}
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
		object.AddressOf(raw2),
		object.AddressOf(raw3),
		object.AddressOf(raw4),
		object.AddressOf(raw5),
		object.AddressOf(raw6),
		object.AddressOf(raw7),
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("key", "", objectSDK.MatchNotPresent)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
		object.AddressOf(raw2),
		object.AddressOf(raw3),
		object.AddressOf(raw4),
		object.AddressOf(raw5),
		object.AddressOf(raw6),
		object.AddressOf(raw7),
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("path", "test", objectSDK.MatchCommonPrefix)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw4),
		object.AddressOf(raw5),
		object.AddressOf(raw6),
		raw7Parent,
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("path", "test/1", objectSDK.MatchCommonPrefix)
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw4),
		object.AddressOf(raw5),
	)

	fs = objectSDK.SearchFilters{}
	fs.AddFilter("path", "test/3/4", objectSDK.MatchStringEqual)
	testSelect(t, db, cnr, fs,
		raw7Parent,
	)
}

func TestDB_SelectRootPhyParent(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	// prepare

	small := testutil.GenerateObjectWithCID(cnr)
	err := putBig(db, small)
	require.NoError(t, err)

	ts := testutil.GenerateObjectWithCID(cnr)
	ts.SetType(objectSDK.TypeTombstone)
	err = putBig(db, ts)
	require.NoError(t, err)

	leftChild := testutil.GenerateObjectWithCID(cnr)
	leftChild.InitRelations()
	err = putBig(db, leftChild)
	require.NoError(t, err)

	lock := testutil.GenerateObjectWithCID(cnr)
	lock.SetType(objectSDK.TypeLock)
	err = putBig(db, lock)
	require.NoError(t, err)

	parent := testutil.GenerateObjectWithCID(cnr)

	rightChild := testutil.GenerateObjectWithCID(cnr)
	rightChild.SetParent(parent)
	idParent, _ := parent.ID()
	rightChild.SetParentID(idParent)
	err = putBig(db, rightChild)
	require.NoError(t, err)

	link := testutil.GenerateObjectWithCID(cnr)
	link.SetParent(parent)
	link.SetParentID(idParent)
	idLeftChild, _ := leftChild.ID()
	idRightChild, _ := rightChild.ID()
	link.SetChildren(idLeftChild, idRightChild)

	err = putBig(db, link)
	require.NoError(t, err)

	t.Run("root objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddRootFilter()
		testSelect(t, db, cnr, fs,
			object.AddressOf(small),
			object.AddressOf(parent),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterPropertyRoot, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("phy objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddPhyFilter()
		testSelect(t, db, cnr, fs,
			object.AddressOf(small),
			object.AddressOf(ts),
			object.AddressOf(leftChild),
			object.AddressOf(rightChild),
			object.AddressOf(link),
			object.AddressOf(lock),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterPropertyPhy, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("regular objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, v2object.TypeRegular.String(), objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs,
			object.AddressOf(small),
			object.AddressOf(leftChild),
			object.AddressOf(rightChild),
			object.AddressOf(link),
			object.AddressOf(parent),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, v2object.TypeRegular.String(), objectSDK.MatchStringNotEqual)
		testSelect(t, db, cnr, fs,
			object.AddressOf(ts),
			object.AddressOf(lock),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("tombstone objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, v2object.TypeTombstone.String(), objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs, object.AddressOf(ts))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, v2object.TypeTombstone.String(), objectSDK.MatchStringNotEqual)
		testSelect(t, db, cnr, fs,
			object.AddressOf(small),
			object.AddressOf(leftChild),
			object.AddressOf(rightChild),
			object.AddressOf(link),
			object.AddressOf(parent),
			object.AddressOf(lock),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderObjectType, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("objects with parent", func(t *testing.T) {
		idParent, _ := parent.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderParent,
			idParent.EncodeToString(),
			objectSDK.MatchStringEqual)

		testSelect(t, db, cnr, fs,
			object.AddressOf(rightChild),
			object.AddressOf(link),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderParent, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("all objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		testSelect(t, db, cnr, fs,
			object.AddressOf(small),
			object.AddressOf(ts),
			object.AddressOf(leftChild),
			object.AddressOf(rightChild),
			object.AddressOf(link),
			object.AddressOf(parent),
			object.AddressOf(lock),
		)
	})
}

func TestDB_SelectInhume(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	raw1 := testutil.GenerateObjectWithCID(cnr)
	err := putBig(db, raw1)
	require.NoError(t, err)

	raw2 := testutil.GenerateObjectWithCID(cnr)
	err = putBig(db, raw2)
	require.NoError(t, err)

	fs := objectSDK.SearchFilters{}
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
		object.AddressOf(raw2),
	)

	var tombstone oid.Address
	tombstone.SetContainer(cnr)
	tombstone.SetObject(oidtest.ID())

	err = metaInhume(db, object.AddressOf(raw2), tombstone)
	require.NoError(t, err)

	fs = objectSDK.SearchFilters{}
	testSelect(t, db, cnr, fs,
		object.AddressOf(raw1),
	)
}

func TestDB_SelectPayloadHash(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	raw1 := testutil.GenerateObjectWithCID(cnr)
	err := putBig(db, raw1)
	require.NoError(t, err)

	raw2 := testutil.GenerateObjectWithCID(cnr)
	err = putBig(db, raw2)
	require.NoError(t, err)

	cs, _ := raw1.PayloadChecksum()
	payloadHash := hex.EncodeToString(cs.Value())

	fs := objectSDK.SearchFilters{}
	fs.AddFilter(v2object.FilterHeaderPayloadHash,
		payloadHash,
		objectSDK.MatchStringEqual)

	testSelect(t, db, cnr, fs, object.AddressOf(raw1))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter(v2object.FilterHeaderPayloadHash,
		payloadHash[:len(payloadHash)-1],
		objectSDK.MatchCommonPrefix)

	testSelect(t, db, cnr, fs, object.AddressOf(raw1))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter(v2object.FilterHeaderPayloadHash,
		payloadHash,
		objectSDK.MatchStringNotEqual)

	testSelect(t, db, cnr, fs, object.AddressOf(raw2))

	fs = objectSDK.SearchFilters{}
	fs.AddFilter(v2object.FilterHeaderPayloadHash,
		"",
		objectSDK.MatchNotPresent)

	testSelect(t, db, cnr, fs)

	t.Run("invalid hashes", func(t *testing.T) {
		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadHash,
			payloadHash[:len(payloadHash)-1],
			objectSDK.MatchStringNotEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw1), object.AddressOf(raw2))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadHash,
			payloadHash[:len(payloadHash)-2]+"x",
			objectSDK.MatchCommonPrefix)

		testSelect(t, db, cnr, fs)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadHash,
			payloadHash[:len(payloadHash)-3]+"x0",
			objectSDK.MatchCommonPrefix)

		testSelect(t, db, cnr, fs)
	})
}

func TestDB_SelectWithSlowFilters(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	v20 := new(version.Version)
	v20.SetMajor(2)

	var v21 version.Version
	v21.SetMajor(2)
	v21.SetMinor(1)

	raw1 := testutil.GenerateObjectWithCID(cnr)
	raw1.SetPayloadSize(10)
	raw1.SetCreationEpoch(11)
	raw1.SetVersion(v20)
	err := putBig(db, raw1)
	require.NoError(t, err)

	raw2 := testutil.GenerateObjectWithCID(cnr)
	raw2.SetPayloadSize(20)
	raw2.SetCreationEpoch(21)
	raw2.SetVersion(&v21)
	err = putBig(db, raw2)
	require.NoError(t, err)

	t.Run("object with TZHash", func(t *testing.T) {
		cs, _ := raw1.PayloadHomomorphicHash()

		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderHomomorphicHash,
			hex.EncodeToString(cs.Value()),
			objectSDK.MatchStringEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw1))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderHomomorphicHash,
			hex.EncodeToString(cs.Value()),
			objectSDK.MatchStringNotEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw2))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderHomomorphicHash,
			"",
			objectSDK.MatchNotPresent)

		testSelect(t, db, cnr, fs)
	})

	t.Run("object with payload length", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadLength, "20", objectSDK.MatchStringEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw2))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadLength, "20", objectSDK.MatchStringNotEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw1))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderPayloadLength, "", objectSDK.MatchNotPresent)

		testSelect(t, db, cnr, fs)
	})

	t.Run("object with creation epoch", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderCreationEpoch, "11", objectSDK.MatchStringEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw1))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderCreationEpoch, "11", objectSDK.MatchStringNotEqual)

		testSelect(t, db, cnr, fs, object.AddressOf(raw2))

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderCreationEpoch, "", objectSDK.MatchNotPresent)

		testSelect(t, db, cnr, fs)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderCreationEpoch, "1", objectSDK.MatchCommonPrefix)

		testSelect(t, db, cnr, fs, object.AddressOf(raw1))
	})

	t.Run("object with version", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectVersionFilter(objectSDK.MatchStringEqual, v21)
		testSelect(t, db, cnr, fs, object.AddressOf(raw2))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectVersionFilter(objectSDK.MatchStringNotEqual, v21)
		testSelect(t, db, cnr, fs, object.AddressOf(raw1))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectVersionFilter(objectSDK.MatchNotPresent, version.Version{})
		testSelect(t, db, cnr, fs)
	})
}

func TestDB_SelectObjectID(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	// prepare

	parent := testutil.GenerateObjectWithCID(cnr)

	regular := testutil.GenerateObjectWithCID(cnr)
	idParent, _ := parent.ID()
	regular.SetParentID(idParent)
	regular.SetParent(parent)

	err := putBig(db, regular)
	require.NoError(t, err)

	ts := testutil.GenerateObjectWithCID(cnr)
	ts.SetType(objectSDK.TypeTombstone)
	err = putBig(db, ts)
	require.NoError(t, err)

	lock := testutil.GenerateObjectWithCID(cnr)
	lock.SetType(objectSDK.TypeLock)
	err = putBig(db, lock)
	require.NoError(t, err)

	t.Run("not found objects", func(t *testing.T) {
		raw := testutil.GenerateObjectWithCID(cnr)

		id, _ := raw.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, id)

		testSelect(t, db, cnr, fs)

		fs = objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringNotEqual, id)

		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("regular objects", func(t *testing.T) {
		id, _ := regular.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, id)
		testSelect(t, db, cnr, fs, object.AddressOf(regular))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringNotEqual, id)
		testSelect(t, db, cnr, fs,
			object.AddressOf(parent),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("tombstone objects", func(t *testing.T) {
		id, _ := ts.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, id)
		testSelect(t, db, cnr, fs, object.AddressOf(ts))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringNotEqual, id)
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(lock),
		)
	})

	t.Run("parent objects", func(t *testing.T) {
		id, _ := parent.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, id)
		testSelect(t, db, cnr, fs, object.AddressOf(parent))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringNotEqual, id)
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("lock objects", func(t *testing.T) {
		id, _ := lock.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringEqual, id)
		testSelect(t, db, cnr, fs, object.AddressOf(lock))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectIDFilter(objectSDK.MatchStringNotEqual, id)
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(ts),
		)
	})
}

func TestDB_SelectOwnerID(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	// prepare

	parent := testutil.GenerateObjectWithCID(cnr)

	regular := testutil.GenerateObjectWithCID(cnr)
	idParent, _ := parent.ID()
	regular.SetParentID(idParent)
	regular.SetParent(parent)

	err := putBig(db, regular)
	require.NoError(t, err)

	ts := testutil.GenerateObjectWithCID(cnr)
	ts.SetType(objectSDK.TypeTombstone)
	err = putBig(db, ts)
	require.NoError(t, err)

	lock := testutil.GenerateObjectWithCID(cnr)
	lock.SetType(objectSDK.TypeLock)
	err = putBig(db, lock)
	require.NoError(t, err)

	t.Run("not found objects", func(t *testing.T) {
		raw := testutil.GenerateObjectWithCID(cnr)

		fs := objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringEqual, raw.OwnerID())

		testSelect(t, db, cnr, fs)

		fs = objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringNotEqual, raw.OwnerID())

		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("regular objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringEqual, regular.OwnerID())
		testSelect(t, db, cnr, fs, object.AddressOf(regular))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringNotEqual, regular.OwnerID())
		testSelect(t, db, cnr, fs,
			object.AddressOf(parent),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("tombstone objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringEqual, ts.OwnerID())
		testSelect(t, db, cnr, fs, object.AddressOf(ts))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringNotEqual, ts.OwnerID())
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(lock),
		)
	})

	t.Run("parent objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringEqual, parent.OwnerID())
		testSelect(t, db, cnr, fs, object.AddressOf(parent))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringNotEqual, parent.OwnerID())
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(ts),
			object.AddressOf(lock),
		)
	})

	t.Run("lock objects", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringEqual, lock.OwnerID())
		testSelect(t, db, cnr, fs, object.AddressOf(lock))

		fs = objectSDK.SearchFilters{}
		fs.AddObjectOwnerIDFilter(objectSDK.MatchStringNotEqual, lock.OwnerID())
		testSelect(t, db, cnr, fs,
			object.AddressOf(regular),
			object.AddressOf(parent),
			object.AddressOf(ts),
		)
	})
}

type testTarget struct {
	objects []*objectSDK.Object
}

func (tt *testTarget) WriteObject(_ context.Context, obj *objectSDK.Object) error {
	tt.objects = append(tt.objects, obj)
	return nil
}

func cutObject(t *testing.T, p transformer.ChunkedObjectWriter, hdr *objectSDK.Object, size int) *transformer.AccessIdentifiers {
	ctx := context.Background()
	require.NoError(t, p.WriteHeader(ctx, hdr))

	payload := make([]byte, size)
	rand.New(rand.NewSource(0)).Read(payload)

	_, err := p.Write(ctx, payload)
	require.NoError(t, err)

	ids, err := p.Close(ctx)
	require.NoError(t, err)
	return ids
}

func TestDB_RawHead_SplitInfo(t *testing.T) {
	t.Parallel()

	const (
		partSize    = 10
		partCount   = 2
		dataCount   = 2
		parityCount = 1
	)

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	pk, err := keys.NewPrivateKey()
	require.NoError(t, err)

	tt := new(testTarget)
	p := transformer.NewPayloadSizeLimiter(transformer.Params{
		Key:            &pk.PrivateKey,
		NextTargetInit: func() transformer.ObjectWriter { return tt },
		NetworkState:   epochState{e: 1},
		MaxSize:        partSize,
	})

	hdr := objectSDK.New()
	hdr.SetContainerID(cnr)
	hdr.SetOwnerID(usertest.ID())
	ids := cutObject(t, p, hdr, partSize*partCount)
	require.Equal(t, len(tt.objects), partCount+1)

	t.Run("rep", func(t *testing.T) {
		testGetRawSplitInfo(t, cnr, ids, tt.objects[partCount], tt.objects[partCount-1])
	})
	t.Run("with ec", func(t *testing.T) {
		ec, err := erasurecode.NewConstructor(dataCount, parityCount)
		require.NoError(t, err)

		cs, err := ec.Split(tt.objects[partCount-1], &pk.PrivateKey)
		require.NoError(t, err)

		testGetRawSplitInfo(t, cnr, ids, tt.objects[partCount], cs[0])
	})
}

func testGetRawSplitInfo(t *testing.T, cnr cidSDK.ID, ids *transformer.AccessIdentifiers, linking, lastPart *objectSDK.Object) {
	expectedLinkID, ok := linking.ID()
	require.True(t, ok)

	t.Run("first last, then linking", func(t *testing.T) {
		db := newDB(t)
		defer func() { require.NoError(t, db.Close()) }()

		require.NoError(t, metaPut(db, lastPart, nil))
		require.NoError(t, metaPut(db, linking, nil))

		var addr oid.Address
		addr.SetContainer(cnr)
		addr.SetObject(*ids.ParentID)

		_, err := metaGet(db, addr, true)

		var siErr *objectSDK.SplitInfoError
		require.ErrorAs(t, err, &siErr)

		lastID, ok := siErr.SplitInfo().LastPart()
		require.True(t, ok)
		require.Equal(t, ids.SelfID, lastID)

		linkID, ok := siErr.SplitInfo().Link()
		require.True(t, ok)
		require.Equal(t, expectedLinkID, linkID)
	})
	t.Run("first linking, then last", func(t *testing.T) {
		db := newDB(t)
		defer func() { require.NoError(t, db.Close()) }()

		require.NoError(t, metaPut(db, linking, nil))
		require.NoError(t, metaPut(db, lastPart, nil))

		var addr oid.Address
		addr.SetContainer(cnr)
		addr.SetObject(*ids.ParentID)

		_, err := metaGet(db, addr, true)

		var siErr *objectSDK.SplitInfoError
		require.ErrorAs(t, err, &siErr)

		lastID, ok := siErr.SplitInfo().LastPart()
		require.True(t, ok)
		require.Equal(t, ids.SelfID, lastID)

		linkID, ok := siErr.SplitInfo().Link()
		require.True(t, ok)
		require.Equal(t, expectedLinkID, linkID)
	})
	t.Run("only last part", func(t *testing.T) {
		db := newDB(t)
		defer func() { require.NoError(t, db.Close()) }()

		require.NoError(t, metaPut(db, lastPart, nil))

		var addr oid.Address
		addr.SetContainer(cnr)
		addr.SetObject(*ids.ParentID)

		_, err := metaGet(db, addr, true)

		var siErr *objectSDK.SplitInfoError
		require.ErrorAs(t, err, &siErr)

		lastPart, ok := siErr.SplitInfo().LastPart()
		require.True(t, ok)
		require.Equal(t, ids.SelfID, lastPart)
	})
}

func TestDB_SelectSplitID_EC(t *testing.T) {
	t.Parallel()

	const (
		partSize    = 10
		partCount   = 2
		dataCount   = 2
		parityCount = 1
	)

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	pk, err := keys.NewPrivateKey()
	require.NoError(t, err)

	tt := new(testTarget)
	p := transformer.NewPayloadSizeLimiter(transformer.Params{
		Key:            &pk.PrivateKey,
		NextTargetInit: func() transformer.ObjectWriter { return tt },
		NetworkState:   epochState{e: 1},
		MaxSize:        partSize,
	})

	hdr := objectSDK.New()
	hdr.SetContainerID(cnr)
	hdr.SetOwnerID(usertest.ID())
	cutObject(t, p, hdr, partSize*partCount)
	require.Equal(t, len(tt.objects), partCount+1)

	split := tt.objects[0].SplitID()
	require.NotNil(t, split)

	ec, err := erasurecode.NewConstructor(dataCount, parityCount)
	require.NoError(t, err)

	for i := range partCount {
		cs, err := ec.Split(tt.objects[i], &pk.PrivateKey)
		require.NoError(t, err)

		require.NoError(t, putBig(db, cs[0]))
	}

	t.Run("not present", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("split id", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, split.String(), objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs,
			object.AddressOf(tt.objects[0]),
			object.AddressOf(tt.objects[1]),
		)
	})

	t.Run("empty split", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, "", objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs)
	})

	t.Run("unknown split id", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID,
			objectSDK.NewSplitID().String(),
			objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs)
	})
}

func TestDB_SelectSplitID(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	child1 := testutil.GenerateObjectWithCID(cnr)
	child2 := testutil.GenerateObjectWithCID(cnr)
	child3 := testutil.GenerateObjectWithCID(cnr)

	split1 := objectSDK.NewSplitID()
	split2 := objectSDK.NewSplitID()

	child1.SetSplitID(split1)
	child2.SetSplitID(split1)
	child3.SetSplitID(split2)

	require.NoError(t, putBig(db, child1))
	require.NoError(t, putBig(db, child2))
	require.NoError(t, putBig(db, child3))

	t.Run("not present", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, "", objectSDK.MatchNotPresent)
		testSelect(t, db, cnr, fs)
	})

	t.Run("split id", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, split1.String(), objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs,
			object.AddressOf(child1),
			object.AddressOf(child2),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, split2.String(), objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs, object.AddressOf(child3))
	})

	t.Run("empty split", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID, "", objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs)
	})

	t.Run("unknown split id", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter(v2object.FilterHeaderSplitID,
			objectSDK.NewSplitID().String(),
			objectSDK.MatchStringEqual)
		testSelect(t, db, cnr, fs)
	})
}

func TestDB_SelectContainerID(t *testing.T) {
	t.Parallel()

	db := newDB(t)
	defer func() { require.NoError(t, db.Close()) }()

	cnr := cidtest.ID()

	obj1 := testutil.GenerateObjectWithCID(cnr)
	err := putBig(db, obj1)
	require.NoError(t, err)

	obj2 := testutil.GenerateObjectWithCID(cnr)
	err = putBig(db, obj2)
	require.NoError(t, err)

	t.Run("same cid", func(t *testing.T) {
		fs := objectSDK.SearchFilters{}
		fs.AddObjectContainerIDFilter(objectSDK.MatchStringEqual, cnr)

		testSelect(t, db, cnr, fs,
			object.AddressOf(obj1),
			object.AddressOf(obj2),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddObjectContainerIDFilter(objectSDK.MatchStringNotEqual, cnr)

		testSelect(t, db, cnr, fs,
			object.AddressOf(obj1),
			object.AddressOf(obj2),
		)

		fs = objectSDK.SearchFilters{}
		fs.AddObjectContainerIDFilter(objectSDK.MatchNotPresent, cnr)

		testSelect(t, db, cnr, fs)
	})

	t.Run("not same cid", func(t *testing.T) {
		newCnr := cidtest.ID()

		fs := objectSDK.SearchFilters{}
		fs.AddObjectContainerIDFilter(objectSDK.MatchStringEqual, newCnr)

		testSelect(t, db, cnr, fs)
	})
}

func BenchmarkSelect(b *testing.B) {
	const objCount = 1000
	db := newDB(b)
	defer func() { require.NoError(b, db.Close()) }()

	cid := cidtest.ID()

	for i := range objCount {
		var attr objectSDK.Attribute
		attr.SetKey("myHeader")
		attr.SetValue(strconv.Itoa(i))
		obj := testutil.GenerateObjectWithCID(cid)
		obj.SetAttributes(attr)
		require.NoError(b, metaPut(db, obj, nil))
	}

	b.Run("string equal", func(b *testing.B) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter("myHeader", strconv.Itoa(objCount/2), objectSDK.MatchStringEqual)
		benchmarkSelect(b, db, cid, fs, 1)
	})
	b.Run("string not equal", func(b *testing.B) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter("myHeader", strconv.Itoa(objCount/2), objectSDK.MatchStringNotEqual)
		benchmarkSelect(b, db, cid, fs, objCount-1)
	})
	b.Run("common prefix", func(b *testing.B) {
		prefix := "99"
		n := 1 /* 99 */ + 10 /* 990..999 */

		fs := objectSDK.SearchFilters{}
		fs.AddFilter("myHeader", prefix, objectSDK.MatchCommonPrefix)
		benchmarkSelect(b, db, cid, fs, n)
	})
	b.Run("unknown", func(b *testing.B) {
		fs := objectSDK.SearchFilters{}
		fs.AddFilter("myHeader", strconv.Itoa(objCount/2), objectSDK.MatchUnknown)
		benchmarkSelect(b, db, cid, fs, 0)
	})
}

func TestExpiredObjects(t *testing.T) {
	t.Parallel()

	db := newDB(t, meta.WithEpochState(epochState{currEpoch}))
	defer func() { require.NoError(t, db.Close()) }()

	checkExpiredObjects(t, db, func(exp, nonExp *objectSDK.Object) {
		cidExp, _ := exp.ContainerID()
		cidNonExp, _ := nonExp.ContainerID()

		objs, err := metaSelect(db, cidExp, objectSDK.SearchFilters{})
		require.NoError(t, err)
		require.Empty(t, objs) // expired object should not be returned

		objs, err = metaSelect(db, cidNonExp, objectSDK.SearchFilters{})
		require.NoError(t, err)
		require.NotEmpty(t, objs)
	})
}

func benchmarkSelect(b *testing.B, db *meta.DB, cid cidSDK.ID, fs objectSDK.SearchFilters, expected int) {
	var prm meta.SelectPrm
	prm.SetContainerID(cid)
	prm.SetFilters(fs)

	for range b.N {
		res, err := db.Select(context.Background(), prm)
		if err != nil {
			b.Fatal(err)
		}
		if len(res.AddressList()) != expected {
			b.Fatalf("expected %d items, got %d", expected, len(res.AddressList()))
		}
	}
}

func metaSelect(db *meta.DB, cnr cidSDK.ID, fs objectSDK.SearchFilters) ([]oid.Address, error) {
	var prm meta.SelectPrm
	prm.SetFilters(fs)
	prm.SetContainerID(cnr)

	res, err := db.Select(context.Background(), prm)
	return res.AddressList(), err
}