package auth

import (
	"sort"

	"github.com/gorilla/sessions"
	"github.com/markbates/goth"
	"github.com/markbates/goth/gothic"
	"github.com/markbates/goth/providers/google"
)

type Service struct {
	secret            string
	googleClientId    string
	googleSecret      string
	googleRedirectUrl string
}

type ProviderIndex struct {
	ProvidersMap map[string]string
	Providers    []string
}

func NewService(secret, googleClientId, googleSecret, googleRedirectUrl string) *Service {
	return &Service{
		secret,
		googleClientId,
		googleSecret,
		googleRedirectUrl,
	}
}

func (as Service) GetProviderIndex() *ProviderIndex {
	goth.UseProviders(google.New(as.googleClientId, as.googleSecret, as.googleRedirectUrl))

	m := map[string]string{
		"google": "Google",
	}
	var keys []string
	for k := range m {
		keys = append(keys, k)
	}
	sort.Strings(keys)

	gothic.Store = sessions.NewCookieStore([]byte(as.secret))

	return &ProviderIndex{Providers: keys, ProvidersMap: m}
}