package webutil

import (
	"fmt"
	"net/http"
)

type PathScanner struct {
	r   *http.Request
	err error
}

func NewPathScanner(r *http.Request) *PathScanner {
	return &PathScanner{r: r}
}

func (s *PathScanner) Scan(name string, val any) *PathScanner {
	if s.err != nil {
		return s
	}

	if err := scan(s.r.PathValue(name), val); err != nil {
		s.err = fmt.Errorf("Error in field %s: %w", name, err)
	}

	return s
}

func (s *PathScanner) Error() error {
	return s.err
}