package initialization

import (
	"gateway/config"
	"gateway/core"
	"gateway/utils"
	"github.com/nacos-group/nacos-sdk-go/clients"
	"github.com/nacos-group/nacos-sdk-go/common/constant"
	"github.com/nacos-group/nacos-sdk-go/vo"
)

// 初始化Nacos注册
func initNacos() {
	config.InitNacosConfig()

	sc := []constant.ServerConfig{
		*constant.NewServerConfig(config.NacosConfig.Host, config.NacosConfig.Port),
	}
	cc := constant.ClientConfig{
		AppName:             config.AppInfo.AppName,
		NamespaceId:         config.NacosConfig.NamespaceId,
		TimeoutMs:           5000,
		NotLoadCacheAtStart: true,
		RotateTime:          "1h",
		MaxAge:              3,
		LogLevel:            "debug",
	}
	configParam := vo.NacosClientParam{
		ClientConfig:  &cc,
		ServerConfigs: sc,
	}

	client, err := clients.NewNamingClient(configParam)

	if err != nil {
		panic(err)
	}
	ip := "gateway"
	if ips := utils.GetIps(); ips != nil {
		ip = ips[0]
	}
	success, err := client.RegisterInstance(vo.RegisterInstanceParam{
		Ip:          ip,
		Port:        config.AppInfo.Port,
		Weight:      10,
		Enable:      true,
		Healthy:     true,
		ServiceName: "gateway",
		Ephemeral:   true,
	})
	core.Log.Debug("Nacos注册结果: %v", success)
	if !success {
		core.Log.Panic("服务注册失败，退出程序: %v", err.Error())
	}

	// 打印所有服务
	go func() {
		instances, err := client.SelectAllInstances(vo.SelectAllInstancesParam{
			ServiceName: config.AppInfo.AppName,
		})
		if err != nil {
			core.Log.Error("获取所有服务失败")
			return
		}
		core.Log.Debug("获取到服务总数: %v", len(instances))
		for _, instance := range instances {
			core.Log.Debug("服务ID： %v --> %v:%v", instance.InstanceId, instance.Ip, instance.Port)
		}
	}()

	configClient, err := clients.NewConfigClient(configParam)
	if err != nil {
		core.Log.Error("创建配置连接失败: %v", err.Error())
	}
	_ = configClient.ListenConfig(vo.ConfigParam{
		DataId:   config.NacosConfig.CenterConfigName,
		Group:    "DEFAULT_GROUP",
		OnChange: configChanged,
	})

	// 读取初始配置
	core.NacosClient = core.NewNacosClient(client, configClient)
	configStr, err := configClient.GetConfig(vo.ConfigParam{DataId: "gateway.yml", Group: "DEFAULT_GROUP"})
	if err != nil {
		core.Log.Panic("读取配置文件错误: %v", err.Error())
	}
	core.ConfigChanged(configStr)
}

func configChanged(namespace, group, dataId, data string) {
	core.ConfigChanged(data)
}