package ui

import (
	"io"
	"os"
)

var _ PhysicalResources = &OSResources{}

// DefaultResources returns the default Resources implementation (OSResources).
func DefaultResources() PhysicalResources {
	return &OSResources{}
}

// OSResources is Resources implementation that uses the default file system directly.
type OSResources struct {
}

// FetchResource checks if file is available and returns the specified path.
func (r *OSResources) FetchResource(name string) (string, error) {
	_, err := os.Stat(name)
	if err != nil {
		return "", err
	}
	return name, nil
}

// OpenResource opens the specified file on disk.
func (r *OSResources) OpenResource(name string) (io.ReadCloser, error) {
	return os.Open(name)
}

// Destroy does nothing.
func (r *OSResources) Destroy() error { return nil }