package models

import (
	"context"
	"errors"
	"time"
)

// ErrUserLookupNotAvailable is returned when user lookup is not configured.
var ErrUserLookupNotAvailable = errors.New("user lookup not available")

// AuthToken represents an authentication token for a user session.
type AuthToken struct {
	Base

	Token      string     `json:"-"`
	UserID     string     `json:"userId"`
	CreatedAt  time.Time  `json:"createdAt"`
	ExpiresAt  *time.Time `json:"expiresAt,omitempty"`
	LastUsedAt *time.Time `json:"lastUsedAt,omitempty"`
}

// User returns the user who owns this token.
func (t *AuthToken) User(ctx context.Context) (*User, error) {
	return t.LookupUser(ctx, t.UserID)
}