utils.go

package YouTubeDownloader

import (
	"os"
	"io"
	"fmt"
	"path/filepath"
)

func FileExists(path string) bool {
	if _, err := os.Stat(path); err == nil {
		return true
	}
	return false
}

func GetDir(path string) string {
	return filepath.Dir(path)
}

// https://gist.github.com/var23rav/23ae5d0d4d830aff886c3c970b8f6c6b
func MoveFile(sourcePath, destPath string) error {
	inputFile, err := os.Open(sourcePath)
	if err != nil {
		return fmt.Errorf("Couldn't open source file: %s", err)
	}
	outputFile, err := os.Create(destPath)
	if err != nil {
		inputFile.Close()
		return fmt.Errorf("Couldn't open dest file: %s", err)
	}
	defer outputFile.Close()
	_, err = io.Copy(outputFile, inputFile)
	inputFile.Close()
	if err != nil {
		return fmt.Errorf("Writing to output file failed: %s", err)
	}
	// The copy was successful, so now delete the original file
	err = os.Remove(sourcePath)
	if err != nil {
		return fmt.Errorf("Failed removing original file: %s", err)
	}
	return nil
}