package lookup

import (
	"errors"
	"net"

	"dnsupdater/ip/resolver/ifconfigme"
	"dnsupdater/ip/resolver/ipecho"
	"dnsupdater/ip/resolver/ipme"
	"dnsupdater/ip/resolver/jsonip"
)

var services []Service

func Provide(service Service) {
	services = append(services, service)
}

func Get(name string) Service {
	for _, service := range services {
		if service.Name() == name {
			return service
		}
	}
	return nil
}

func Lookup() (net.IP, error) {
	for _, service := range services {
		ip, err := service.Lookup()
		if err != nil {
			continue
		}
		return ip, err
	}

	return nil, errors.New("failed to get ip")
}

func init() {
	Provide(jsonip.New())
	Provide(ifconfigme.New())
	Provide(ipme.New())
	Provide(ipecho.New())
}