package services

import (
	"errors"

	"git.faercol.me/faercol/http-boot-server/bootserver/bootoption"
)

var ErrUnknownClient = errors.New("unknown client")
var ErrUnselectedBootOption = errors.New("unselected boot option")
var ErrUnknownBootOption = errors.New("unknown boot option")

type ClientHandlerService struct {
	clients map[string]*bootoption.Client
}

func NewClientHandlerService() *ClientHandlerService {
	return &ClientHandlerService{
		clients: make(map[string]*bootoption.Client),
	}
}

func (chs *ClientHandlerService) AddClient(client *bootoption.Client) {
	chs.clients[client.IP] = client
}

func (chs *ClientHandlerService) GetClientSelectedBootOption(client string) (*bootoption.EFIApp, error) {
	clientDetails, ok := chs.clients[client]
	if !ok {
		return nil, ErrUnknownClient
	}

	if clientDetails.SelectedOption == "" {
		return nil, ErrUnselectedBootOption
	}

	for _, o := range clientDetails.Options {
		if o.Name == clientDetails.SelectedOption {
			return &o, nil
		}
	}
	return nil, ErrUnknownBootOption
}

func (chs *ClientHandlerService) SetClientBootOption(client, option string) error {
	clientDetails, ok := chs.clients[client]
	if !ok {
		return ErrUnknownClient
	}

	for _, o := range clientDetails.Options {
		if o.Name == option {
			clientDetails.SelectedOption = option
			return nil
		}
	}
	return ErrUnknownBootOption
}