package grpc

import "google.golang.org/grpc/resolver"

type Builder struct {
}

func (b Builder) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error) {
	r := Resolver{cc: cc}

	r.ResolveNow(resolver.ResolveNowOptions{})

	return r, nil
}

func (b Builder) Scheme() string {
	return "discovery"
}

type Resolver struct {
	cc resolver.ClientConn
}

func (r Resolver) ResolveNow(options resolver.ResolveNowOptions) {
	_ = r.cc.UpdateState(resolver.State{
		Addresses: []resolver.Address{
			{
				Addr: "localhost:8080",
			}},
	})
}

func (r Resolver) Close() {
}