package host

import (
	"context"

	"github.com/go-playground/validator/v10"
	"github.com/google/uuid"
)

var validate = validator.New()

type Service interface {

	//创建主机
	CreateHost(context.Context, *Host) (*Host, error)
	//查询主机列表（列表不展示详细信息）
	QueryHost(context.Context, *QueryHostRequest) (*Hostset, error)
	//查询主机详情
	DescribeHost(context.Context, *QueryHostRequest) (*Host, error)
	//删除主机,比如前端需要打印删除对象的详细信息
	DeleteHost(context.Context, *UpdateHostRequest) (*Host, error)
	//更新主机
	UpdateHost(context.Context, *DeleteHostRequest) error
}

type Vender int

const (
	PrivateIDC Vender = iota
	Tencent
	AliYun
	HuaWei
)

func NewHost() *Host {
	return &Host{
		Resource: &Resource{},
		Describe: &Describe{},
	}
}

type Host struct {
	*Resource //公共部分

	*Describe //独有部分
}

// 校验数据合法性
func (h *Host) Validate() error {
	return validate.Struct(h)
}

func (h *Host) InjectDefault() {
	if h.Resource.Id == "" {
		h.Resource.Id = uuid.New().String()
	}
	if h.Resource.Region == "" {
		h.Resource.Region = "cn-beijing"
	}
	if h.Resource.Type == "" {
		h.Resource.Type = "host"
	}
	if h.Describe.CPU == 0 {
		h.Describe.CPU = 1
	}
	if h.Describe.Memory == 0 {
		h.Describe.Memory = 1
	}
}

// 方便扩展，避免修改接口
type Hostset struct {
	Items []*Host `json:"items"`
	Total int     `json:"total"`
}

type Describe struct {
	ResourceId   string `json:"resource_id" `               //关联的资源ID
	CPU          int    `json:"cpu" validate:"required"`    //CPU核数
	Memory       int    `json:"memory" validate:"required"` //内存大小
	GPUAmount    int    `json:"gpu_amount"`                 //GPU数量
	GPUSpec      string `json:"gpu_spec"`                   //GPU规格
	OSType       string `json:"os_type"`                    //操作系统类型
	OSName       string `json:"os_name"`
	SerialNumber string `json:"serial_number"` //序列号
}

type Resource struct {
	Id          string `json:"id" validate:"required"`
	Vender      Vender `json:"vender" `
	Region      string `json:"region" validate:"required"`
	CreateAt    int    `json:"create_at"`
	ExpireAt    int    `json:"expire_at"`
	Type        string `json:"type" validate:"required"`
	Name        string `json:"name" validate:"required"`
	Description string `json:"description"`
	Status      string `json:"status"`
	UpdateAt    int    `json:"update_at"`
	SyncAt      int    `json:"sync_at"`
	Account     string `json:"account"`
	PublicIP    string `json:"public_ip"`
	PrivateIP   string `json:"private_ip"`
}

type QueryHostRequest struct{}
type UpdateHostRequest struct {
	//只允许更新私有部分
	*Describe
}
type DeleteHostRequest struct{}