package tests

import (
	"errors"
	"path"
	"testing"

	"git.frostfs.info/TrueCloudLab/frostfs-contract/frostfsid/client"
	"github.com/nspcc-dev/neo-go/pkg/core/interop/storage"
	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
	"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
	"github.com/nspcc-dev/neo-go/pkg/neotest"
	"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
	"github.com/nspcc-dev/neo-go/pkg/util"
	"github.com/nspcc-dev/neo-go/pkg/vm"
	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
	"github.com/nspcc-dev/neo-go/pkg/vm/vmstate"
	"github.com/nspcc-dev/neo-go/pkg/wallet"
	"github.com/stretchr/testify/require"
)

const frostfsidPath = "../frostfsid"

const defaultNamespace = ""

const (
	setAdminMethod   = "setAdmin"
	getAdminMethod   = "getAdmin"
	clearAdminMethod = "clearAdmin"

	createSubjectMethod       = "createSubject"
	getSubjectMethod          = "getSubject"
	listSubjectsMethod        = "listSubjects"
	addSubjectKeyMethod       = "addSubjectKey"
	removeSubjectKeyMethod    = "removeSubjectKey"
	getSubjectByKeyMethod     = "getSubjectByKey"
	getSubjectKeyByNameMethod = "getSubjectKeyByName"
	setSubjectNameMethod      = "setSubjectName"
	setSubjectKVMethod        = "setSubjectKV"
	deleteSubjectKVMethod     = "deleteSubjectKV"
	deleteSubjectMethod       = "deleteSubject"

	createNamespaceMethod       = "createNamespace"
	getNamespaceMethod          = "getNamespace"
	getNamespaceExtendedMethod  = "getNamespaceExtended"
	listNamespacesMethod        = "listNamespaces"
	listNamespaceSubjectsMethod = "listNamespaceSubjects"

	createGroupMethod            = "createGroup"
	getGroupMethod               = "getGroup"
	getGroupExtendedMethod       = "getGroupExtended"
	getGroupIDByNameMethod       = "getGroupIDByName"
	setGroupNameMethod           = "setGroupName"
	setGroupKVMethod             = "setGroupKV"
	deleteGroupKVMethod          = "deleteGroupKV"
	listGroupsMethod             = "listGroups"
	addSubjectToGroupMethod      = "addSubjectToGroup"
	removeSubjectFromGroupMethod = "removeSubjectFromGroup"
	listGroupSubjectsMethod      = "listGroupSubjects"
	deleteGroupMethod            = "deleteGroup"
)

const notWitnessedError = "not witnessed"

type testFrostFSIDInvoker struct {
	e            *neotest.Executor
	contractHash util.Uint160
	owner        *wallet.Account
}

func (f *testFrostFSIDInvoker) OwnerInvoker() *neotest.ContractInvoker {
	return f.e.NewInvoker(f.contractHash, neotest.NewSingleSigner(f.owner))
}

func (f *testFrostFSIDInvoker) CommitteeInvoker() *neotest.ContractInvoker {
	return f.e.CommitteeInvoker(f.contractHash)
}

func (f *testFrostFSIDInvoker) AnonInvoker(t *testing.T) *neotest.ContractInvoker {
	acc, err := wallet.NewAccount()
	require.NoError(t, err)

	return f.e.NewInvoker(f.contractHash, newSigner(t, f.CommitteeInvoker(), acc))
}

func newSigner(t *testing.T, c *neotest.ContractInvoker, acc *wallet.Account) neotest.Signer {
	amount := int64(100_0000_0000)

	tx := c.NewTx(t, []neotest.Signer{c.Validator},
		c.NativeHash(t, nativenames.Gas), "transfer",
		c.Validator.ScriptHash(), acc.Contract.ScriptHash(), amount, nil)
	c.AddNewBlock(t, tx)
	c.CheckHalt(t, tx.Hash())
	return neotest.NewSingleSigner(acc)
}

func deployFrostFSIDContract(t *testing.T, e *neotest.Executor, contractOwner util.Uint160) util.Uint160 {
	args := make([]any, 5)
	args[0] = contractOwner

	c := neotest.CompileFile(t, e.CommitteeHash, frostfsidPath, path.Join(frostfsidPath, "config.yml"))
	e.DeployContract(t, c, args)
	return c.Hash
}

func newFrostFSIDInvoker(t *testing.T) *testFrostFSIDInvoker {
	e := newExecutor(t)

	acc, err := wallet.NewAccount()
	require.NoError(t, err)

	h := deployFrostFSIDContract(t, e, acc.ScriptHash())

	newSigner(t, e.CommitteeInvoker(h), acc)

	return &testFrostFSIDInvoker{
		e:            e,
		contractHash: h,
		owner:        acc,
	}
}

func TestFrostFSID_ContractOwnersManagement(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	anonInvoker := f.AnonInvoker(t)
	anonInvokerHash := anonInvoker.Signers[0].ScriptHash()
	invoker := f.OwnerInvoker()
	invokerHash := invoker.Signers[0].ScriptHash()
	committeeInvoker := f.CommitteeInvoker()

	checkOwner(t, anonInvoker, invokerHash)

	anonInvoker.InvokeFail(t, notWitnessedError, createNamespaceMethod, "namespace")
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, "namespace")

	t.Run("setAdmin is only allowed for committee", func(t *testing.T) {
		invoker.InvokeFail(t, notWitnessedError, setAdminMethod, anonInvokerHash)
	})

	t.Run("replace owner", func(t *testing.T) {
		committeeInvoker.Invoke(t, stackitem.Null{}, setAdminMethod, anonInvokerHash)
		checkOwner(t, anonInvoker, anonInvokerHash)

		invoker.InvokeFail(t, notWitnessedError, createNamespaceMethod, "namespace2")
		anonInvoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, "namespace2")
	})
	t.Run("remove owner", func(t *testing.T) {
		committeeInvoker.Invoke(t, stackitem.Null{}, clearAdminMethod)
		checkOwner(t, anonInvoker)

		invoker.InvokeFail(t, notWitnessedError, createNamespaceMethod, "namespace3")
		anonInvoker.InvokeFail(t, notWitnessedError, createNamespaceMethod, "namespace3")
	})
}

func checkOwner(t *testing.T, invoker *neotest.ContractInvoker, owner ...util.Uint160) {
	if len(owner) > 1 {
		require.Fail(t, "invalid testcase")
	}

	s, err := invoker.TestInvoke(t, getAdminMethod)
	require.NoError(t, err)
	require.Equal(t, 1, s.Len(), "unexpected number items on stack")
	if len(owner) == 0 {
		_, isMissing := s.Pop().Item().(stackitem.Null)
		require.True(t, isMissing)
		return
	}

	bs, err := s.Pop().Item().TryBytes()
	require.NoError(t, err)
	require.Equal(t, bs, owner[0].BytesBE())
}

func TestFrostFSID_DefaultNamespace(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	subjKey, err := keys.NewPrivateKey()
	require.NoError(t, err)
	subjKeyAddr := subjKey.PublicKey().GetScriptHash()

	invoker := f.OwnerInvoker()

	groupID := int64(1)
	groupName := "group"

	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, defaultNamespace, subjKey.PublicKey().Bytes())
	invoker.Invoke(t, stackitem.Make(groupID), createGroupMethod, defaultNamespace, groupName)
	invoker.Invoke(t, stackitem.Null{}, addSubjectToGroupMethod, subjKeyAddr, groupID)
	invoker.Invoke(t, stackitem.Null{}, removeSubjectFromGroupMethod, subjKeyAddr, groupID)
	invoker.Invoke(t, stackitem.Null{}, deleteGroupMethod, defaultNamespace, groupID)
	invoker.Invoke(t, stackitem.Null{}, deleteSubjectMethod, subjKeyAddr)
}

func TestFrostFSID_SubjectManagement(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	subjKey, err := keys.NewPrivateKey()
	require.NoError(t, err)
	subjKeyAddr := subjKey.PublicKey().GetScriptHash()

	anonInvoker := f.AnonInvoker(t)
	invoker := f.OwnerInvoker()

	anonInvoker.InvokeFail(t, notWitnessedError, createSubjectMethod, defaultNamespace, subjKey.PublicKey().Bytes())
	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, defaultNamespace, subjKey.PublicKey().Bytes())
	invoker.InvokeFail(t, "already exists", createSubjectMethod, defaultNamespace, subjKey.PublicKey().Bytes())

	s, err := anonInvoker.TestInvoke(t, getSubjectMethod, subjKeyAddr)
	require.NoError(t, err)

	subj := parseSubject(t, s)
	require.True(t, subjKey.PublicKey().Equal(&subj.PrimaryKey))

	t.Run("add subject key", func(t *testing.T) {
		subjNewKey, err := keys.NewPrivateKey()
		require.NoError(t, err)

		anonInvoker.InvokeFail(t, notWitnessedError, addSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())
		invoker.Invoke(t, stackitem.Null{}, addSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())

		s, err = anonInvoker.TestInvoke(t, getSubjectMethod, subjKeyAddr)
		require.NoError(t, err)
		subj := parseSubject(t, s)
		require.Len(t, subj.AdditionalKeys, 1)
		require.True(t, subjNewKey.PublicKey().Equal(subj.AdditionalKeys[0]))

		t.Run("get subject by additional key", func(t *testing.T) {
			s, err = anonInvoker.TestInvoke(t, getSubjectByKeyMethod, subjNewKey.PublicKey().Bytes())
			require.NoError(t, err)
			subj := parseSubject(t, s)
			require.True(t, subjKey.PublicKey().Equal(&subj.PrimaryKey), "keys must be the same")

			s, err = anonInvoker.TestInvoke(t, getSubjectByKeyMethod, subjKey.PublicKey().Bytes())
			require.NoError(t, err)
			subj = parseSubject(t, s)
			require.True(t, subjKey.PublicKey().Equal(&subj.PrimaryKey), "keys must be the same")

			t.Run("remove subject key", func(t *testing.T) {
				anonInvoker.InvokeFail(t, notWitnessedError, removeSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())
				invoker.Invoke(t, stackitem.Null{}, removeSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())

				anonInvoker.InvokeFail(t, "not found", getSubjectByKeyMethod, subjNewKey.PublicKey().Bytes())
			})
		})
	})

	t.Run("set subject name", func(t *testing.T) {
		login := "some-login"

		anonInvoker.InvokeFail(t, notWitnessedError, setSubjectNameMethod, subjKeyAddr, login)
		invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjKeyAddr, login)

		s, err = anonInvoker.TestInvoke(t, getSubjectMethod, subjKeyAddr)
		require.NoError(t, err)
		subj = parseSubject(t, s)
		require.Equal(t, login, subj.Name)
	})

	t.Run("set subject KVs", func(t *testing.T) {
		iamPath := "iam/path"

		anonInvoker.InvokeFail(t, notWitnessedError, setSubjectKVMethod, subjKeyAddr, client.IAMPathKey, iamPath)
		invoker.Invoke(t, stackitem.Null{}, setSubjectKVMethod, subjKeyAddr, client.IAMPathKey, iamPath)

		s, err = anonInvoker.TestInvoke(t, getSubjectMethod, subjKeyAddr)
		require.NoError(t, err)
		subj = parseSubject(t, s)
		require.Equal(t, iamPath, subj.KV[client.IAMPathKey])

		anonInvoker.InvokeFail(t, notWitnessedError, deleteSubjectKVMethod, subjKeyAddr, client.IAMPathKey)
		invoker.Invoke(t, stackitem.Null{}, deleteSubjectKVMethod, subjKeyAddr, client.IAMPathKey)

		s, err = anonInvoker.TestInvoke(t, getSubjectMethod, subjKeyAddr)
		require.NoError(t, err)
		subj = parseSubject(t, s)
		require.Empty(t, subj.KV)
	})

	t.Run("list subjects", func(t *testing.T) {
		newSubjKey, err := keys.NewPrivateKey()
		require.NoError(t, err)

		invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, defaultNamespace, newSubjKey.PublicKey().Bytes())

		s, err = anonInvoker.TestInvoke(t, listSubjectsMethod)
		require.NoError(t, err)

		addresses, err := unwrap.ArrayOfUint160(makeValidRes(stackitem.NewArray(readIteratorAll(s))), nil)
		require.NoError(t, err)
		require.Len(t, addresses, 2)
		require.ElementsMatch(t, addresses, []util.Uint160{subjKeyAddr, newSubjKey.PublicKey().GetScriptHash()})
	})

	anonInvoker.InvokeFail(t, notWitnessedError, deleteSubjectMethod, subjKeyAddr)
	invoker.Invoke(t, stackitem.Null{}, deleteSubjectMethod, subjKeyAddr)

	anonInvoker.InvokeFail(t, "subject not found", getSubjectMethod, subjKeyAddr)
}

func TestFrostFSIS_SubjectNameRelatedInvariants(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	subjName1 := "subj1"
	subjKey1, err := keys.NewPrivateKey()
	require.NoError(t, err)
	subjKeyAddr1 := subjKey1.PublicKey().GetScriptHash()

	subjName2 := "subj2"
	subjKey2, err := keys.NewPrivateKey()
	require.NoError(t, err)
	subjKeyAddr2 := subjKey2.PublicKey().GetScriptHash()

	subjName3 := "subj3"
	subjKey3, err := keys.NewPrivateKey()
	require.NoError(t, err)
	subjKeyAddr3 := subjKey3.PublicKey().GetScriptHash()

	invoker := f.OwnerInvoker()

	ns1, ns2 := "ns1", "ns2"

	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, ns1)
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, ns2)
	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, ns1, subjKey1.PublicKey().Bytes())
	invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjKeyAddr1, subjName1)
	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, ns1, subjKey2.PublicKey().Bytes())
	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, ns2, subjKey3.PublicKey().Bytes())
	invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjKeyAddr3, subjName3)

	// Check that we can find public key by name for subj1 (with name)
	// and cannot find key for subj2 (without name)
	s, err := invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns1, subjName1)
	checkPublicKeyResult(t, s, err, subjKey1)
	s, err = invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns1, subjName2)
	checkPublicKeyResult(t, s, err, nil)

	// Check that we can find public key for by name for subj2 when we set its name
	invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjKeyAddr2, subjName2)
	s, err = invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns1, subjName2)
	checkPublicKeyResult(t, s, err, subjKey2)

	// Check that we cannot set for second subject name that the first subject has already taken
	invoker.InvokeFail(t, "not available", setSubjectNameMethod, subjKeyAddr2, subjName1)

	// Check that we cannot find public key by name for subject that was removed
	invoker.Invoke(t, stackitem.Null{}, deleteSubjectMethod, subjKeyAddr2)
	s, err = invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns1, subjName2)
	checkPublicKeyResult(t, s, err, nil)

	// Check that subj3 can have the same name as subj1 if they belong to different namespaces
	// Also check that after subject renaming its key cannot be found by old name
	invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjKeyAddr3, subjName1)
	s, err = invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns2, subjName1)
	checkPublicKeyResult(t, s, err, subjKey3)
	s, err = invoker.TestInvoke(t, getSubjectKeyByNameMethod, ns2, subjName3)
	checkPublicKeyResult(t, s, err, nil)
}

func TestFrostFSIS_GroupNameRelatedInvariants(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	groupName1, groupName2 := "group1", "group2"
	groupID1, groupID2 := int64(1), int64(2)

	invoker := f.OwnerInvoker()

	ns1, ns2 := "ns1", "ns2"

	// Create two group
	// Create two namespace.
	// Add these groups to ns1
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, ns1)
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, ns2)
	invoker.Invoke(t, stackitem.Make(groupID1), createGroupMethod, ns1, groupName1)
	invoker.Invoke(t, stackitem.Make(groupID2), createGroupMethod, ns1, groupName2)

	// Check that we can find group id by name for group1 in ns1 and not in ns2
	s, err := invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, groupName1)
	checkGroupIDResult(t, s, err, groupID1)
	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns2, groupName1)
	checkGroupIDResult(t, s, err, -1)

	// Check that we cannot set for second group name that the first subject has already taken
	invoker.InvokeFail(t, "not available", setGroupNameMethod, ns1, groupID1, groupName2)

	// Check that we cannot create group with the same name in namespace, but can in another
	invoker.InvokeFail(t, "not available", createGroupMethod, ns1, groupName2)
	invoker.Invoke(t, stackitem.Make(3), createGroupMethod, ns2, groupName2)

	// Check that we cannot find group id by name for group that was removed
	invoker.Invoke(t, stackitem.Null{}, deleteGroupMethod, ns1, groupID2)
	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, groupName2)
	checkGroupIDResult(t, s, err, -1)

	// Check that we can create group with the name that was freed after deleting
	invoker.Invoke(t, stackitem.Make(4), createGroupMethod, ns1, groupName2)

	// Check that after group renaming its id cannot be found by old name
	newGroupName := "new"
	invoker.Invoke(t, stackitem.Null{}, setGroupNameMethod, ns1, groupID1, newGroupName)
	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, groupName1)
	checkGroupIDResult(t, s, err, -1)
	s, err = invoker.TestInvoke(t, getGroupIDByNameMethod, ns1, newGroupName)
	checkGroupIDResult(t, s, err, groupID1)
}

func TestFrostFSID_NamespaceManagement(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	anonInvoker := f.AnonInvoker(t)
	invoker := f.OwnerInvoker()

	namespace := "some-namespace"

	anonInvoker.InvokeFail(t, notWitnessedError, createNamespaceMethod, namespace)
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, namespace)
	invoker.InvokeFail(t, "already exists", createNamespaceMethod, namespace)

	s, err := anonInvoker.TestInvoke(t, getNamespaceMethod, namespace)
	require.NoError(t, err)

	ns := parseNamespace(t, s.Pop().Item())
	require.Equal(t, namespace, ns.Name)

	t.Run("add user to namespace", func(t *testing.T) {
		subjKey, err := keys.NewPrivateKey()
		require.NoError(t, err)
		invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, ns.Name, subjKey.PublicKey().Bytes())

		subjName := "name"
		subjAddress := subjKey.PublicKey().GetScriptHash()
		invoker.Invoke(t, stackitem.Null{}, setSubjectNameMethod, subjAddress, subjName)

		s, err := anonInvoker.TestInvoke(t, getSubjectMethod, subjAddress)
		require.NoError(t, err)
		subj := parseSubject(t, s)
		require.Equal(t, namespace, subj.Namespace)

		t.Run("list namespace subjects", func(t *testing.T) {
			s, err := anonInvoker.TestInvoke(t, listNamespaceSubjectsMethod, namespace)
			require.NoError(t, err)

			addresses, err := unwrap.ArrayOfUint160(makeValidRes(stackitem.NewArray(readIteratorAll(s))), nil)
			require.NoError(t, err)
			require.ElementsMatch(t, addresses, []util.Uint160{subjAddress})
		})

		t.Run("get subject key by name", func(t *testing.T) {
			s, err := anonInvoker.TestInvoke(t, getSubjectKeyByNameMethod, namespace, subjName)
			require.NoError(t, err)

			foundKey, err := unwrap.PublicKey(makeValidRes(s.Pop().Item()), nil)
			require.NoError(t, err)
			require.Equal(t, subjKey.PublicKey(), foundKey)
		})

		t.Run("list namespaces", func(t *testing.T) {
			namespace2 := "some-namespace2"
			invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, namespace2)

			s, err := anonInvoker.TestInvoke(t, listNamespacesMethod)
			require.NoError(t, err)

			namespaces := parseNamespaces(t, readIteratorAll(s))
			require.NoError(t, err)
			require.ElementsMatch(t, namespaces, []Namespace{{Name: defaultNamespace}, {Name: namespace}, {Name: namespace2}})

			t.Run("find namespaces with some subjects", func(t *testing.T) {
				for _, ns := range namespaces {
					s, err := anonInvoker.TestInvoke(t, getNamespaceExtendedMethod, ns.Name)
					require.NoError(t, err)

					nsExt := parseNamespaceExtended(t, s.Pop().Item())
					if nsExt.SubjectsCount > 0 {
						require.Equal(t, namespace, nsExt.Name)
					}
				}
			})
		})
	})
}

func TestFrostFSID_GroupManagement(t *testing.T) {
	f := newFrostFSIDInvoker(t)

	anonInvoker := f.AnonInvoker(t)
	invoker := f.OwnerInvoker()

	nsName := "namespace"
	invoker.Invoke(t, stackitem.Null{}, createNamespaceMethod, nsName)

	groupID := int64(1)
	groupName := "group"
	anonInvoker.InvokeFail(t, notWitnessedError, createGroupMethod, nsName, groupName)
	invoker.Invoke(t, stackitem.Make(groupID), createGroupMethod, nsName, groupName)

	s, err := anonInvoker.TestInvoke(t, getGroupMethod, nsName, groupID)
	require.NoError(t, err)
	group := parseGroup(t, s.Pop().Item())
	require.Equal(t, groupID, group.ID)
	require.Equal(t, groupName, group.Name)

	s, err = anonInvoker.TestInvoke(t, listGroupsMethod, nsName)
	require.NoError(t, err)
	groups := parseGroups(t, readIteratorAll(s))
	require.ElementsMatch(t, groups, []Group{{ID: groupID, Name: groupName, Namespace: nsName}})

	t.Run("add subjects to group", func(t *testing.T) {
		subjKey, err := keys.NewPrivateKey()
		require.NoError(t, err)
		invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, nsName, subjKey.PublicKey().Bytes())

		subjAddress := subjKey.PublicKey().GetScriptHash()
		anonInvoker.InvokeFail(t, "not witnessed", addSubjectToGroupMethod, subjAddress, groupID)
		invoker.Invoke(t, stackitem.Null{}, addSubjectToGroupMethod, subjAddress, groupID)

		t.Run("list group subjects", func(t *testing.T) {
			s, err = anonInvoker.TestInvoke(t, listGroupSubjectsMethod, nsName, groupID)
			require.NoError(t, err)

			addresses, err := unwrap.ArrayOfUint160(makeValidRes(stackitem.NewArray(readIteratorAll(s))), nil)
			require.NoError(t, err)
			require.ElementsMatch(t, addresses, []util.Uint160{subjAddress})

			anonInvoker.InvokeFail(t, "not witnessed", removeSubjectFromGroupMethod, subjAddress, groupID)
			invoker.Invoke(t, stackitem.Null{}, removeSubjectFromGroupMethod, subjAddress, groupID)

			s, err = anonInvoker.TestInvoke(t, listGroupSubjectsMethod, nsName, groupID)
			require.NoError(t, err)

			addresses, err = unwrap.ArrayOfUint160(makeValidRes(stackitem.NewArray(readIteratorAll(s))), nil)
			require.NoError(t, err)
			require.Empty(t, addresses)

			t.Run("get group extended", func(t *testing.T) {
				subjectsCount := 10
				for i := 0; i < subjectsCount; i++ {
					subjKey, err := keys.NewPrivateKey()
					require.NoError(t, err)
					invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, nsName, subjKey.PublicKey().Bytes())
					invoker.Invoke(t, stackitem.Null{}, addSubjectToGroupMethod, subjKey.PublicKey().GetScriptHash(), groupID)
				}

				s, err = anonInvoker.TestInvoke(t, getGroupExtendedMethod, nsName, groupID)
				require.NoError(t, err)
				groupExt := parseGroupExtended(t, s.Pop().Item())
				require.Equal(t, groupID, groupExt.ID)
				require.Equal(t, groupName, groupExt.Name)
				require.Empty(t, groupExt.KV)
				require.EqualValues(t, subjectsCount, groupExt.SubjectsCount)
			})
		})
	})

	t.Run("set group name", func(t *testing.T) {
		newGroupName := "new-name"

		anonInvoker.InvokeFail(t, notWitnessedError, setGroupNameMethod, nsName, groupID, newGroupName)
		invoker.Invoke(t, stackitem.Null{}, setGroupNameMethod, nsName, groupID, newGroupName)

		s, err = anonInvoker.TestInvoke(t, getGroupIDByNameMethod, nsName, newGroupName)
		require.NoError(t, err)
		require.Equal(t, groupID, s.Pop().BigInt().Int64())

		s, err = anonInvoker.TestInvoke(t, getGroupMethod, nsName, groupID)
		require.NoError(t, err)
		group = parseGroup(t, s.Pop().Item())
		require.Equal(t, newGroupName, group.Name)
	})

	t.Run("set group KVs", func(t *testing.T) {
		iamARN := "arn"

		anonInvoker.InvokeFail(t, notWitnessedError, setGroupKVMethod, nsName, groupID, client.IAMARNKey, iamARN)
		invoker.Invoke(t, stackitem.Null{}, setGroupKVMethod, nsName, groupID, client.IAMARNKey, iamARN)

		s, err = anonInvoker.TestInvoke(t, getGroupMethod, nsName, groupID)
		require.NoError(t, err)
		group = parseGroup(t, s.Pop().Item())
		require.Equal(t, iamARN, group.KV[client.IAMARNKey])

		anonInvoker.InvokeFail(t, notWitnessedError, deleteGroupKVMethod, nsName, groupID, client.IAMARNKey)
		invoker.Invoke(t, stackitem.Null{}, deleteGroupKVMethod, nsName, groupID, client.IAMARNKey)

		s, err = anonInvoker.TestInvoke(t, getGroupMethod, nsName, groupID)
		require.NoError(t, err)
		group = parseGroup(t, s.Pop().Item())
		require.Empty(t, group.KV)
	})

	t.Run("delete group", func(t *testing.T) {
		anonInvoker.InvokeFail(t, notWitnessedError, deleteGroupMethod, nsName, groupID)
		invoker.Invoke(t, stackitem.Null{}, deleteGroupMethod, nsName, groupID)

		anonInvoker.InvokeFail(t, "group not found", getGroupMethod, nsName, groupID)

		s, err = anonInvoker.TestInvoke(t, listGroupsMethod, nsName)
		require.NoError(t, err)
		groups := parseGroups(t, readIteratorAll(s))
		require.Empty(t, groups)
	})
}

func checkPublicKeyResult(t *testing.T, s *vm.Stack, err error, key *keys.PrivateKey) {
	if key == nil {
		require.ErrorContains(t, err, "not found")
		return
	}

	require.NoError(t, err)
	foundKey, err := unwrap.PublicKey(makeValidRes(s.Pop().Item()), nil)
	require.NoError(t, err)
	require.Equal(t, key.PublicKey(), foundKey)
}

func checkGroupIDResult(t *testing.T, s *vm.Stack, err error, groupID int64) {
	if groupID == -1 {
		require.ErrorContains(t, err, "not found")
		return
	}

	require.NoError(t, err)
	foundGroupID, err := unwrap.Int64(makeValidRes(s.Pop().Item()), nil)
	require.NoError(t, err)
	require.Equal(t, groupID, foundGroupID)
}

func readIteratorAll(s *vm.Stack) []stackitem.Item {
	iter := s.Pop().Value().(*storage.Iterator)

	stackItems := make([]stackitem.Item, 0)
	for iter.Next() {
		stackItems = append(stackItems, iter.Value())
	}

	return stackItems
}

type Subject struct {
	PrimaryKey     keys.PublicKey
	AdditionalKeys keys.PublicKeys
	Namespace      string
	Name           string
	KV             map[string]string
}

func parseSubject(t *testing.T, s *vm.Stack) Subject {
	var subj Subject

	subjStruct := s.Pop().Array()
	require.Len(t, subjStruct, 5)

	pkBytes, err := subjStruct[0].TryBytes()
	require.NoError(t, err)
	err = subj.PrimaryKey.DecodeBytes(pkBytes)
	require.NoError(t, err)

	if !subjStruct[1].Equals(stackitem.Null{}) {
		subj.AdditionalKeys, err = unwrap.ArrayOfPublicKeys(makeValidRes(subjStruct[1]), nil)
		require.NoError(t, err)
	}

	nsBytes, err := subjStruct[2].TryBytes()
	require.NoError(t, err)
	subj.Namespace = string(nsBytes)

	nameBytes, err := subjStruct[3].TryBytes()
	require.NoError(t, err)
	subj.Name = string(nameBytes)

	subj.KV, err = parseMap(subjStruct[4])
	require.NoError(t, err)

	return subj
}

func parseMap(item stackitem.Item) (map[string]string, error) {
	if item.Equals(stackitem.Null{}) {
		return nil, nil
	}

	metaMap, err := unwrap.Map(makeValidRes(item), nil)
	if err != nil {
		return nil, err
	}

	meta, ok := metaMap.Value().([]stackitem.MapElement)
	if !ok {
		return nil, errors.New("invalid map type")
	}

	res := make(map[string]string, len(meta))
	for _, element := range meta {
		key, err := element.Key.TryBytes()
		if err != nil {
			return nil, err
		}
		val, err := element.Value.TryBytes()
		if err != nil {
			return nil, err
		}
		res[string(key)] = string(val)
	}

	return res, nil
}

type Namespace struct {
	Name string
}

type NamespaceExtended struct {
	Name          string
	SubjectsCount int64
	GroupsCount   int64
}

func parseNamespace(t *testing.T, item stackitem.Item) Namespace {
	var ns Namespace

	subjStruct := item.Value().([]stackitem.Item)
	require.Len(t, subjStruct, 1)

	nameBytes, err := subjStruct[0].TryBytes()
	require.NoError(t, err)
	ns.Name = string(nameBytes)

	return ns
}

func parseNamespaceExtended(t *testing.T, item stackitem.Item) NamespaceExtended {
	var ns NamespaceExtended

	subjStruct := item.Value().([]stackitem.Item)
	require.Len(t, subjStruct, 3)

	nameBytes, err := subjStruct[0].TryBytes()
	require.NoError(t, err)
	ns.Name = string(nameBytes)

	groupCountInt, err := subjStruct[1].TryInteger()
	require.NoError(t, err)
	ns.GroupsCount = groupCountInt.Int64()

	subjectsCountInt, err := subjStruct[2].TryInteger()
	require.NoError(t, err)
	ns.SubjectsCount = subjectsCountInt.Int64()

	return ns
}

func parseNamespaces(t *testing.T, items []stackitem.Item) []Namespace {
	res := make([]Namespace, len(items))

	for i := 0; i < len(items); i++ {
		res[i] = parseNamespace(t, items[i])
	}

	return res
}

type Group struct {
	ID        int64
	Name      string
	Namespace string
	KV        map[string]string
}

type GroupExtended struct {
	ID            int64
	Name          string
	Namespace     string
	KV            map[string]string
	SubjectsCount int64
}

func parseGroup(t *testing.T, item stackitem.Item) Group {
	var group Group

	subjStruct := item.Value().([]stackitem.Item)
	require.Len(t, subjStruct, 4)

	groupID, err := subjStruct[0].TryInteger()
	require.NoError(t, err)
	group.ID = groupID.Int64()

	nameBytes, err := subjStruct[1].TryBytes()
	require.NoError(t, err)
	group.Name = string(nameBytes)

	namespaceBytes, err := subjStruct[2].TryBytes()
	require.NoError(t, err)
	group.Namespace = string(namespaceBytes)

	group.KV, err = parseMap(subjStruct[3])
	require.NoError(t, err)

	return group
}

func parseGroupExtended(t *testing.T, item stackitem.Item) GroupExtended {
	var gr GroupExtended

	subjStruct := item.Value().([]stackitem.Item)
	require.Len(t, subjStruct, 5)

	groupID, err := subjStruct[0].TryInteger()
	require.NoError(t, err)
	gr.ID = groupID.Int64()

	nameBytes, err := subjStruct[1].TryBytes()
	require.NoError(t, err)
	gr.Name = string(nameBytes)

	namespaceBytes, err := subjStruct[2].TryBytes()
	require.NoError(t, err)
	gr.Namespace = string(namespaceBytes)

	gr.KV, err = parseMap(subjStruct[3])
	require.NoError(t, err)

	subjectsCountInt, err := subjStruct[4].TryInteger()
	require.NoError(t, err)
	gr.SubjectsCount = subjectsCountInt.Int64()

	return gr
}

func parseGroups(t *testing.T, items []stackitem.Item) []Group {
	res := make([]Group, len(items))

	for i := 0; i < len(items); i++ {
		res[i] = parseGroup(t, items[i])
	}

	return res
}

func makeValidRes(item stackitem.Item) *result.Invoke {
	return &result.Invoke{
		Stack: []stackitem.Item{item},
		State: vmstate.Halt.String(),
	}
}