package main

import (
	"context"
	"fmt"
	"log"

	pb "github.com/go-kratos/kratos/examples/helloworld/helloworld"
	"github.com/go-kratos/kratos/v2"
	"github.com/go-kratos/kratos/v2/transport/grpc"
	"github.com/go-kratos/nacos/registry"
	"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"
)

// server is used to implement helloworld.GreeterServer.
type server struct {
	pb.UnimplementedGreeterServer
}

// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
	return &pb.HelloReply{Message: fmt.Sprintf("Welcome %+v!", in.Name)}, nil
}

func main() {
	sc := []constant.ServerConfig{
		*constant.NewServerConfig("127.0.0.1", 8848),
	}

	cc := constant.ClientConfig{
		NamespaceId:         "public", //namespace id
		TimeoutMs:           5000,
		NotLoadCacheAtStart: true,
		LogDir:              "/tmp/nacos/log",
		CacheDir:            "/tmp/nacos/cache",
		RotateTime:          "1h",
		MaxAge:              3,
		LogLevel:            "debug",
	}

	// a more graceful way to create naming client
	client, err := clients.NewNamingClient(
		vo.NacosClientParam{
			ClientConfig:  &cc,
			ServerConfigs: sc,
		},
	)
	if err != nil {
		log.Panic(err)
	}

	grpcSrv := grpc.NewServer(
		grpc.Address(":9109"),
	)

	s := &server{}
	pb.RegisterGreeterServer(grpcSrv, s)

	app := kratos.New(
		kratos.Name("helloworld"),
		kratos.Server(grpcSrv),
		kratos.Registrar(registry.New(client)),
	)
	if err := app.Run(); err != nil {
		log.Fatal(err)
	}
}