// 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 indexnode

import (
	"context"

	"github.com/milvus-io/milvus/api/commonpb"
	"github.com/milvus-io/milvus/api/milvuspb"
	"github.com/milvus-io/milvus/internal/proto/internalpb"
	"github.com/milvus-io/milvus/internal/util/metricsinfo"
	"github.com/milvus-io/milvus/internal/util/typeutil"
)

//getComponentConfigurations returns the configurations of queryNode matching req.Pattern
func getComponentConfigurations(ctx context.Context, req *internalpb.ShowConfigurationsRequest) *internalpb.ShowConfigurationsResponse {
	prefix := "indexnode."
	matchedConfig := Params.IndexNodeCfg.Base.GetByPattern(prefix + req.Pattern)
	configList := make([]*commonpb.KeyValuePair, 0, len(matchedConfig))
	for key, value := range matchedConfig {
		configList = append(configList,
			&commonpb.KeyValuePair{
				Key:   key,
				Value: value,
			})
	}

	return &internalpb.ShowConfigurationsResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_Success,
			Reason:    "",
		},
		Configuations: configList,
	}
}

// TODO(dragondriver): maybe IndexNode should be an interface so that we can mock it in the test cases
func getSystemInfoMetrics(
	ctx context.Context,
	req *milvuspb.GetMetricsRequest,
	node *IndexNode,
) (*milvuspb.GetMetricsResponse, error) {
	// TODO(dragondriver): add more metrics
	nodeInfos := metricsinfo.IndexNodeInfos{
		BaseComponentInfos: metricsinfo.BaseComponentInfos{
			Name: metricsinfo.ConstructComponentName(typeutil.IndexNodeRole, Params.IndexNodeCfg.GetNodeID()),
			HardwareInfos: metricsinfo.HardwareMetrics{
				IP:           node.session.Address,
				CPUCoreCount: metricsinfo.GetCPUCoreCount(false),
				CPUCoreUsage: metricsinfo.GetCPUUsage(),
				Memory:       metricsinfo.GetMemoryCount(),
				MemoryUsage:  metricsinfo.GetUsedMemoryCount(),
				Disk:         metricsinfo.GetDiskCount(),
				DiskUsage:    metricsinfo.GetDiskUsage(),
			},
			SystemInfo:  metricsinfo.DeployMetrics{},
			CreatedTime: Params.IndexNodeCfg.CreatedTime.String(),
			UpdatedTime: Params.IndexNodeCfg.UpdatedTime.String(),
			Type:        typeutil.IndexNodeRole,
			ID:          node.session.ServerID,
		},
		SystemConfigurations: metricsinfo.IndexNodeConfiguration{
			MinioBucketName: Params.MinioCfg.BucketName,
			SimdType:        Params.CommonCfg.SimdType,
		},
	}

	metricsinfo.FillDeployMetricsWithEnv(&nodeInfos.SystemInfo)

	resp, err := metricsinfo.MarshalComponentInfos(nodeInfos)
	if err != nil {
		return &milvuspb.GetMetricsResponse{
			Status: &commonpb.Status{
				ErrorCode: commonpb.ErrorCode_UnexpectedError,
				Reason:    err.Error(),
			},
			Response:      "",
			ComponentName: metricsinfo.ConstructComponentName(typeutil.IndexNodeRole, Params.IndexNodeCfg.GetNodeID()),
		}, nil
	}

	return &milvuspb.GetMetricsResponse{
		Status: &commonpb.Status{
			ErrorCode: commonpb.ErrorCode_Success,
			Reason:    "",
		},
		Response:      resp,
		ComponentName: metricsinfo.ConstructComponentName(typeutil.IndexNodeRole, Params.IndexNodeCfg.GetNodeID()),
	}, nil
}