package multicast

import (
	"encoding/json"

	"github.com/yggdrasil-network/yggdrasil-go/src/admin"
)

type GetMulticastInterfacesRequest struct{}
type GetMulticastInterfacesResponse struct {
	Interfaces []string `json:"multicast_interfaces"`
}

func (m *Multicast) getMulticastInterfacesHandler(req *GetMulticastInterfacesRequest, res *GetMulticastInterfacesResponse) error {
	res.Interfaces = []string{}
	for _, v := range m.Interfaces() {
		res.Interfaces = append(res.Interfaces, v.Name)
	}
	return nil
}

func (m *Multicast) SetupAdminHandlers(a *admin.AdminSocket) {
	_ = a.AddHandler(
		"getMulticastInterfaces", "Show which interfaces multicast is enabled on", []string{},
		func(in json.RawMessage) (interface{}, error) {
			req := &GetMulticastInterfacesRequest{}
			res := &GetMulticastInterfacesResponse{}
			if err := json.Unmarshal(in, &req); err != nil {
				return nil, err
			}
			if err := m.getMulticastInterfacesHandler(req, res); err != nil {
				return nil, err
			}
			return res, nil
		},
	)
}