package internal

import (
	"errors"
	"net/http"

	"github.com/golang-jwt/jwt/v5"
)

func CurrentUser(r *http.Request) (Claims, error) {
	c, err := r.Cookie(CookieName)
	if err != nil { return Claims{}, err }
	tok, err := jwt.ParseWithClaims(c.Value, &Claims{}, func(_ *jwt.Token) (any, error) { return sessionKey, nil })
	if err != nil { return Claims{}, err }
	if cl, ok := tok.Claims.(*Claims); ok && tok.Valid {
		return *cl, nil
	}
	return Claims{}, errors.New("invalid session")
}