package node

import (
	client "go.etcd.io/etcd/client/v3"
	"log"
	"time"
)

var (
	defaultEndpoints   = []string{"http://127.0.0.1:2379"}
	defaultDialTimeout = 5
)

type Node struct {
	scheme string //
	ip     string //节点ip
	Client *client.Client
}

// NewNode 快速创建节点
func NewNode(endpoints ...string) *Node {
	if len(endpoints) == 0 {
		endpoints = defaultEndpoints
	}
	// etcd 配置
	defaultConfig := client.Config{
		Endpoints:   endpoints,
		DialTimeout: time.Duration(defaultDialTimeout) * time.Second,
	}
	return NewNodeWithConfig(defaultConfig)
}

// NewNodeWithConfig 根据全量配置文件创建节点
func NewNodeWithConfig(conf client.Config) *Node {
	// 创建 etcd 客户端
	etcdClient, err := client.New(conf)
	if err != nil {
		log.Fatal("Error: cannot connect to etcd: ", err)
	}
	return &Node{
		Client: etcdClient,
		scheme: defaultScheme,
	}
}

// SetScheme 设置节点注册、监听scheme
// 禁止在node Register后 或 NewWatcher 后修改
func (n *Node) SetScheme(scheme string) {
	n.scheme = scheme
}