// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package grpcproxyclient

import (
	"context"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"

	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
	"github.com/milvus-io/milvus/internal/mocks"
	"github.com/milvus-io/milvus/internal/proto/internalpb"
	"github.com/milvus-io/milvus/internal/proto/proxypb"
	"github.com/milvus-io/milvus/pkg/util/merr"
	"github.com/milvus-io/milvus/pkg/util/paramtable"
)

func Test_NewClient(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "", 1)
	assert.Nil(t, client)
	assert.Error(t, err)

	client, err = NewClient(ctx, "test", 2)
	assert.NoError(t, err)
	assert.NotNil(t, client)

	// cleanup
	err = client.Close()
	assert.NoError(t, err)
}

func Test_GetComponentStates(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().GetComponentStates(mock.Anything, mock.Anything).Return(&milvuspb.ComponentStates{
		Status: merr.Success(),
	}, nil)
	_, err = client.GetComponentStates(ctx, &milvuspb.GetComponentStatesRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().GetComponentStates(mock.Anything, mock.Anything).Return(&milvuspb.ComponentStates{
		Status: merr.Status(merr.ErrServiceNotReady),
	}, nil)

	_, err = client.GetComponentStates(ctx, &milvuspb.GetComponentStatesRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.GetComponentStates(ctx, &milvuspb.GetComponentStatesRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_GetStatisticsChannel(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().GetStatisticsChannel(mock.Anything, mock.Anything).Return(&milvuspb.StringResponse{
		Status: merr.Success(),
	}, nil)
	_, err = client.GetStatisticsChannel(ctx, &internalpb.GetStatisticsChannelRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().GetStatisticsChannel(mock.Anything, mock.Anything).Return(&milvuspb.StringResponse{
		Status: merr.Status(merr.ErrServiceNotReady),
	}, nil)

	_, err = client.GetStatisticsChannel(ctx, &internalpb.GetStatisticsChannelRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.GetStatisticsChannel(ctx, &internalpb.GetStatisticsChannelRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_InvalidateCollectionMetaCache(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().InvalidateCollectionMetaCache(mock.Anything, mock.Anything).Return(merr.Success(), nil)
	_, err = client.InvalidateCollectionMetaCache(ctx, &proxypb.InvalidateCollMetaCacheRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().InvalidateCollectionMetaCache(mock.Anything, mock.Anything).Return(merr.Status(merr.ErrServiceNotReady), nil)

	_, err = client.InvalidateCollectionMetaCache(ctx, &proxypb.InvalidateCollMetaCacheRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.InvalidateCollectionMetaCache(ctx, &proxypb.InvalidateCollMetaCacheRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_InvalidateCredentialCache(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().InvalidateCredentialCache(mock.Anything, mock.Anything).Return(merr.Success(), nil)
	_, err = client.InvalidateCredentialCache(ctx, &proxypb.InvalidateCredCacheRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().InvalidateCredentialCache(mock.Anything, mock.Anything).Return(merr.Status(merr.ErrServiceNotReady), nil)

	_, err = client.InvalidateCredentialCache(ctx, &proxypb.InvalidateCredCacheRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.InvalidateCredentialCache(ctx, &proxypb.InvalidateCredCacheRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_UpdateCredentialCache(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().UpdateCredentialCache(mock.Anything, mock.Anything).Return(merr.Success(), nil)
	_, err = client.UpdateCredentialCache(ctx, &proxypb.UpdateCredCacheRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().UpdateCredentialCache(mock.Anything, mock.Anything).Return(merr.Status(merr.ErrServiceNotReady), nil)

	_, err = client.UpdateCredentialCache(ctx, &proxypb.UpdateCredCacheRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.UpdateCredentialCache(ctx, &proxypb.UpdateCredCacheRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_RefreshPolicyInfoCache(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().RefreshPolicyInfoCache(mock.Anything, mock.Anything).Return(merr.Success(), nil)
	_, err = client.RefreshPolicyInfoCache(ctx, &proxypb.RefreshPolicyInfoCacheRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().RefreshPolicyInfoCache(mock.Anything, mock.Anything).Return(merr.Status(merr.ErrServiceNotReady), nil)

	_, err = client.RefreshPolicyInfoCache(ctx, &proxypb.RefreshPolicyInfoCacheRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.RefreshPolicyInfoCache(ctx, &proxypb.RefreshPolicyInfoCacheRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_GetProxyMetrics(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().GetProxyMetrics(mock.Anything, mock.Anything).Return(&milvuspb.GetMetricsResponse{Status: merr.Success()}, nil)
	_, err = client.GetProxyMetrics(ctx, &milvuspb.GetMetricsRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().GetProxyMetrics(mock.Anything, mock.Anything).Return(&milvuspb.GetMetricsResponse{Status: merr.Status(merr.ErrServiceNotReady)}, nil)

	_, err = client.GetProxyMetrics(ctx, &milvuspb.GetMetricsRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.GetProxyMetrics(ctx, &milvuspb.GetMetricsRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_SetRates(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().SetRates(mock.Anything, mock.Anything).Return(merr.Success(), nil)
	_, err = client.SetRates(ctx, &proxypb.SetRatesRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().SetRates(mock.Anything, mock.Anything).Return(merr.Status(merr.ErrServiceNotReady), nil)

	_, err = client.SetRates(ctx, &proxypb.SetRatesRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.SetRates(ctx, &proxypb.SetRatesRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_ListClientInfos(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().GetNodeID().Return(1)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().ListClientInfos(mock.Anything, mock.Anything).Return(&proxypb.ListClientInfosResponse{Status: merr.Success()}, nil)
	_, err = client.ListClientInfos(ctx, &proxypb.ListClientInfosRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().ListClientInfos(mock.Anything, mock.Anything).Return(&proxypb.ListClientInfosResponse{Status: merr.Status(merr.ErrServiceNotReady)}, nil)

	_, err = client.ListClientInfos(ctx, &proxypb.ListClientInfosRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.ListClientInfos(ctx, &proxypb.ListClientInfosRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_GetDdChannel(t *testing.T) {
	paramtable.Init()

	ctx := context.Background()
	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	assert.NotNil(t, client)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	// test success
	mockProxy.EXPECT().GetDdChannel(mock.Anything, mock.Anything).Return(&milvuspb.StringResponse{Status: merr.Success()}, nil)
	_, err = client.GetDdChannel(ctx, &internalpb.GetDdChannelRequest{})
	assert.Nil(t, err)

	// test return error code
	mockProxy.ExpectedCalls = nil
	mockProxy.EXPECT().GetDdChannel(mock.Anything, mock.Anything).Return(&milvuspb.StringResponse{Status: merr.Status(merr.ErrServiceNotReady)}, nil)

	_, err = client.GetDdChannel(ctx, &internalpb.GetDdChannelRequest{})
	assert.Nil(t, err)

	// test ctx done
	ctx, cancel := context.WithTimeout(ctx, 10*time.Millisecond)
	defer cancel()
	time.Sleep(20 * time.Millisecond)
	_, err = client.GetDdChannel(ctx, &internalpb.GetDdChannelRequest{})
	assert.ErrorIs(t, err, context.DeadlineExceeded)
}

func Test_ImportV2(t *testing.T) {
	paramtable.Init()
	ctx := context.Background()

	client, err := NewClient(ctx, "test", 1)
	assert.NoError(t, err)
	defer client.Close()

	mockProxy := mocks.NewMockProxyClient(t)
	mockGrpcClient := mocks.NewMockGrpcClient[proxypb.ProxyClient](t)
	mockGrpcClient.EXPECT().Close().Return(nil)
	mockGrpcClient.EXPECT().ReCall(mock.Anything, mock.Anything).RunAndReturn(func(ctx context.Context, f func(proxypb.ProxyClient) (interface{}, error)) (interface{}, error) {
		return f(mockProxy)
	})
	client.(*Client).grpcClient = mockGrpcClient

	mockProxy.EXPECT().ImportV2(mock.Anything, mock.Anything).Return(&internalpb.ImportResponse{Status: merr.Success()}, nil)
	_, err = client.ImportV2(ctx, &internalpb.ImportRequest{})
	assert.Nil(t, err)

	mockProxy.EXPECT().GetImportProgress(mock.Anything, mock.Anything).Return(&internalpb.GetImportProgressResponse{Status: merr.Success()}, nil)
	_, err = client.GetImportProgress(ctx, &internalpb.GetImportProgressRequest{})
	assert.Nil(t, err)

	mockProxy.EXPECT().ListImports(mock.Anything, mock.Anything).Return(&internalpb.ListImportsResponse{Status: merr.Success()}, nil)
	_, err = client.ListImports(ctx, &internalpb.ListImportsRequest{})
	assert.Nil(t, err)
}