package backend

import (
	"errors"
	"go.uber.org/zap"
	"time"
)

type UserType string

var (
	UtPerson  UserType = "person"
	UtHost    UserType = "host"
	UtService UserType = "service"
)

// Session holds info about the logged-in user that won't change
type Session struct {
	SessionID  string
	Expiration time.Time
	UserID     string
	UserType   UserType
	LdapDN     string
}

// SessionCache holds volatile information about the logged-in user
type SessionCache struct {
	Valid       bool
	Groups      []string
	DisplayName string
	GivenName   string
	SurName     string
	Email       string
}

type Backend interface {
	PutSession(session Session, cache SessionCache) error
	GetSession(id string) (Session, *SessionCache, error)
	EndSession(id string)
	NewSessionID() (string, error)
	DoMaintenance()
	Ping() error
}

type NullBackend struct{}

func (n *NullBackend) PutSession(session Session, cache SessionCache) error {
	//TODO implement me
	zap.L().Info("Put session", zap.Any("session", session), zap.Any("cache", cache))
	return nil
}

func (n *NullBackend) GetSession(id string) (Session, *SessionCache, error) {
	//TODO implement me
	return Session{}, nil, errors.New("no such session")
}

func (n *NullBackend) EndSession(id string) {
	//TODO implement me
}

func (n *NullBackend) NewSessionID() (string, error) {
	//TODO implement me
	return "foo", nil
}

func (n *NullBackend) DoMaintenance() {
	//TODO implement me
}

func (n *NullBackend) Ping() error {
	//TODO implement me
	return nil
}