// RAINBOND, Application Management Platform
// Copyright (C) 2014-2017 Goodrain Co., Ltd.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"github.com/urfave/cli"
	"github.com/Sirupsen/logrus"
	"github.com/goodrain/rainbond/pkg/grctl/clients"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/fields"
	"github.com/apcera/termtables"
	"fmt"
	"github.com/goodrain/rainbond/pkg/node/api/model"
	"strings"
	"strconv"
	"encoding/json"
)


func NewCmdNode() cli.Command {
	c:=cli.Command{
		Name:  "node",
		Usage: "获取节点信息。grctl node",
		Action: func(c *cli.Context) error {
			Common(c)
			return getNode(c)
		},
	}
	return c
}


func NewCmdAddNode() cli.Command {
	c:=cli.Command{
		Name:  "add_node",
		Usage: "添加节点。grctl add_node '{}'(jsoned host node)",
		Action: func(c *cli.Context) error {
			return addNode(c)
		},
	}
	return c
}
func addNode(c *cli.Context) error{

	jsoned:=c.Args().First()
	var node model.APIHostNode
	err:=json.Unmarshal([]byte(jsoned),&node)
	if err != nil {
		logrus.Errorf("error unmarshal input json host node")
		return err
	}
	clients.NodeClient.Nodes().Add(&node)
	return nil
}

func NewCmdRegionNode() cli.Command {
	c:=cli.Command{
		Name:  "region_node",
		Usage: "节点管理。grctl region_node",
		Subcommands:[]cli.Command{
			{
				Name:  "up",
				Usage: "up hostID",
				Action: func(c *cli.Context) error {
					id:=c.Args().First()
					clients.NodeClient.Nodes().Get(id).Up()
					return nil
				},
			},
			{
				Name:  "down",
				Usage: "down hostID",
				Action: func(c *cli.Context) error {
					id:=c.Args().First()
					clients.NodeClient.Nodes().Get(id).Down()
					return nil
				},
			},
			{
				Name:  "get",
				Usage: "get hostID",
				Action: func(c *cli.Context) error {
					id:=c.Args().First()
					n:=clients.NodeClient.Nodes().Get(id)
					b,_:=json.Marshal(n)
					fmt.Println(string(b))
					return nil
				},
			},
			{
				Name:  "list",
				Usage: "list",
				Action: func(c *cli.Context) error {
					list:=clients.NodeClient.Nodes().List()
					b,_:=json.Marshal(list)
					fmt.Println(string(b))
					return nil
				},
			},
			{
				Name:  "unscheduable",
				Usage: "unscheduable hostID",
				Action: func(c *cli.Context) error {
					id:=c.Args().First()
					clients.NodeClient.Nodes().Get(id).UnSchedulable()
					return nil
				},
			},
			{
				Name:  "rescheduable",
				Usage: "rescheduable hostID",
				Action: func(c *cli.Context) error {
					id:=c.Args().First()
					clients.NodeClient.Nodes().Get(id).ReSchedulable()
					return nil
				},
			},
		},
	}
	return c
}

func NewCmdNodeRes() cli.Command {
	c:=cli.Command{
		Name:  "noderes",
		Usage: "获取计算节点资源信息  grctl noderes",
		Action: func(c *cli.Context) error {
			Common(c)
			return getNodeWithResource(c)
		},
	}
	return c
}

func getNodeWithResource(c *cli.Context) error {
	ns, err :=clients.K8SClient.Core().Nodes().List(metav1.ListOptions{})
	if err != nil {
		logrus.Errorf("获取节点列表失败,details: %s",err.Error())
		return err
	}


	table := termtables.CreateTable()
	table.AddHeaders("NodeName", "Version", "CapCPU(核)", "AllocatableCPU(核)","UsedCPU(核)", "CapMemory(M)","AllocatableMemory(M)","UsedMemory(M)")
	for _,v:=range ns.Items {

		podList, err := clients.K8SClient.Core().Pods(metav1.NamespaceAll).List(metav1.ListOptions{FieldSelector: fields.SelectorFromSet(fields.Set{"spec.nodeName": v.Name}).String()})
		if err != nil {

		}
		var cpuPerNode=0
		memPerNode:=0
		for _,p:=range podList.Items{
			status:=string(p.Status.Phase)

			if status!="Running" {
				continue
			}
			memPerPod:=0

			memPerPod+=int(p.Spec.Containers[0].Resources.Requests.Memory().Value())
			cpuOfPod:=p.Spec.Containers[0].Resources.Requests.Cpu().String()
			if strings.Contains(cpuOfPod,"m") {
				cpuOfPod=strings.Replace(cpuOfPod,"m","",-1)
			}
			cpuI,_:=strconv.Atoi(cpuOfPod)
			cpuPerNode+=cpuI
			memPerNode+=memPerPod
		}
		capCPU:=v.Status.Capacity.Cpu().Value()
		capMem:=v.Status.Capacity.Memory().Value()
		allocCPU:=v.Status.Allocatable.Cpu().Value()
		allocMem:=v.Status.Allocatable.Memory().Value()
		table.AddRow(v.Name,v.Status.NodeInfo.KubeletVersion,capCPU,allocCPU,float32(cpuPerNode)/1000,capMem/1024/1024,allocMem/1024/1024,memPerNode/1024/1024)
	}
	fmt.Println(table.Render())
	return nil
}

func getNode(c *cli.Context) error {
	ns, err :=clients.K8SClient.Core().Nodes().List(metav1.ListOptions{})
	if err != nil {
		logrus.Errorf("获取节点列表失败,details: %s",err.Error())
		return err
	}
	table := termtables.CreateTable()
	table.AddHeaders("Name", "Status", "Namespace","Unschedulable", "KubeletVersion","Labels")

	for _,v:=range ns.Items{
		cs:=v.Status.Conditions
		status:="unknown"
		for _,cv:=range cs{
			status=string(cv.Status)
			if strings.Contains(status,"rue"){
				status=string(cv.Type)
				break
			}
		}
		m:=v.Labels
		labels:=""
		for k:=range m {
			labels+=k
			labels+=" "
		}
		table.AddRow(v.Name, status,v.Namespace,v.Spec.Unschedulable, v.Status.NodeInfo.KubeletVersion,labels)
	}
	fmt.Println(table.Render())
	return nil
}