local.go

package main

import (
	"os"
	"path/filepath"

	"github.com/pkg/errors"
)

func LocalAssets(path string) ([]string, error) {
	path, err := filepath.Abs(path)
	if err != nil {
		return nil, errors.Wrap(err, "failed to get abs path")
	}

	fi, err := os.Stat(path)
	if err != nil {
		return nil, errors.Wrap(err, "failed to get file stat")
	}

	if !fi.IsDir() {
		return []string{path}, nil
	}

	// Glob all files in the fiven path
	files, err := filepath.Glob(filepath.Join(path, "*"))
	if err != nil {
		return nil, errors.Wrap(err, "failed to glob files")
	}

	if len(files) == 0 {
		return nil, errors.New("no local assets are found")
	}

	assets := make([]string, 0, len(files))
	for _, f := range files {

		// Exclude directory.
		if fi, _ := os.Stat(f); fi.IsDir() {
			continue
		}

		assets = append(assets, f)
	}

	return assets, nil
}