// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.

package services

import (
	"context"
	"github.com/TeaOSLab/EdgeAPI/internal/db/models"
	"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
	"github.com/iwind/TeaGo/types"
)

// MetricStatService 指标统计数据相关服务
type MetricStatService struct {
	BaseService
}

// UploadMetricStats 上传统计数据
func (this *MetricStatService) UploadMetricStats(ctx context.Context, req *pb.UploadMetricStatsRequest) (*pb.RPCSuccess, error) {
	nodeId, err := this.ValidateNode(ctx)
	if err != nil {
		return nil, err
	}

	var tx = this.NullTx()
	clusterId, err := models.SharedNodeDAO.FindNodeClusterId(tx, nodeId)
	if err != nil {
		return nil, err
	}

	for _, stat := range req.MetricStats {
		err := models.SharedMetricStatDAO.CreateStat(tx, stat.Hash, clusterId, nodeId, req.ServerId, req.ItemId, stat.Keys, float64(stat.Value), req.Time, req.Version)
		if err != nil {
			return nil, err
		}
	}

	// 保存总和
	err = models.SharedMetricSumStatDAO.UpdateSum(tx, clusterId, nodeId, req.ServerId, req.Time, req.ItemId, req.Version, req.Count, req.Total)
	if err != nil {
		return nil, err
	}

	return this.Success()
}

// CountMetricStats 计算指标数据数量
func (this *MetricStatService) CountMetricStats(ctx context.Context, req *pb.CountMetricStatsRequest) (*pb.RPCCountResponse, error) {
	_, err := this.ValidateAdmin(ctx, 0)
	if err != nil {
		return nil, err
	}
	var tx = this.NullTx()
	version, err := models.SharedMetricItemDAO.FindItemVersion(tx, req.MetricItemId)
	if err != nil {
		return nil, err
	}
	count, err := models.SharedMetricStatDAO.CountItemStats(tx, req.MetricItemId, version)
	if err != nil {
		return nil, err
	}
	return this.SuccessCount(count)
}

// ListMetricStats 读取单页指标数据
func (this *MetricStatService) ListMetricStats(ctx context.Context, req *pb.ListMetricStatsRequest) (*pb.ListMetricStatsResponse, error) {
	_, err := this.ValidateAdmin(ctx, 0)
	if err != nil {
		return nil, err
	}
	var tx = this.NullTx()
	version, err := models.SharedMetricItemDAO.FindItemVersion(tx, req.MetricItemId)
	if err != nil {
		return nil, err
	}
	stats, err := models.SharedMetricStatDAO.ListItemStats(tx, req.MetricItemId, version, req.Offset, req.Size)
	if err != nil {
		return nil, err
	}
	var pbStats []*pb.MetricStat
	for _, stat := range stats {
		// cluster
		clusterName, err := models.SharedNodeClusterDAO.FindNodeClusterName(tx, int64(stat.ClusterId))
		if err != nil {
			return nil, err
		}

		// node
		nodeName, err := models.SharedNodeDAO.FindNodeName(tx, int64(stat.NodeId))
		if err != nil {
			return nil, err
		}

		// server
		serverName, err := models.SharedServerDAO.FindEnabledServerName(tx, int64(stat.ServerId))
		if err != nil {
			return nil, err
		}

		// 查找sum值
		count, total, err := models.SharedMetricSumStatDAO.FindNodeSum(tx, int64(stat.NodeId), int64(stat.ServerId), stat.Time, int64(stat.ItemId), types.Int32(stat.Version))
		if err != nil {
			return nil, err
		}

		pbStats = append(pbStats, &pb.MetricStat{
			Id:          int64(stat.Id),
			Hash:        stat.Hash,
			ServerId:    int64(stat.ServerId),
			ItemId:      int64(stat.ItemId),
			Keys:        stat.DecodeKeys(),
			Value:       float32(stat.Value),
			Time:        stat.Time,
			Version:     types.Int32(stat.Version),
			NodeCluster: &pb.NodeCluster{Id: int64(stat.ClusterId), Name: clusterName},
			Node:        &pb.Node{Id: int64(stat.NodeId), Name: nodeName},
			Server:      &pb.Server{Id: int64(stat.ServerId), Name: serverName},
			SumCount:    count,
			SumTotal:    total,
		})
	}
	return &pb.ListMetricStatsResponse{MetricStats: pbStats}, nil
}