package grpc

import (
	"kpt-grpc-demo/config"
	"kpt-grpc-demo/pkg/ops"
	opsPb "kpt-grpc-demo/proto/go/backend/ops"
	"kpt-grpc-demo/util/grpc/server"

	"go.uber.org/dig"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
)

type Dependency struct {
	dig.In
	// 依赖
	ops.Options
}

type Servlet struct {
	server *server.Servlet
	Dep    *Dependency
	opsPb.UnimplementedFieldServiceServer
}

// Run start run service
func (s *Servlet) Run() {
	s.server.Run()
}

func (s *Servlet) Close() error {
	return s.server.Close()
}

// New Servlet impl gRPC
func New(cfg *config.AppConfig, dep Dependency) *Servlet {
	// 允许 bangla 作为 grpc server 时，可以向客户端传输20m的数据
	maxSize := 20 * 1024 * 1024
	srv := server.New(&server.Config{
		ServerEnv:   cfg.AppEnv,
		ServerName:  cfg.AppName,
		ServerHost:  cfg.GRPCServerAddr,
		MetricsHost: cfg.GRPCMetricsAddr,
	}, grpc.MaxRecvMsgSize(maxSize), grpc.MaxSendMsgSize(maxSize))

	servlet := &Servlet{
		server: srv,
		Dep:    &dep,
	}

	opsPb.RegisterFieldServiceServer(srv.Server(), servlet)
	reflection.Register(srv.Server())
	return servlet
}