package backend

import (
	"fmt"
	"io"
	"os"
)

func CopyFile(src, dst string) error {
	srcFile, err := os.Open(src)
	if err != nil {
		return fmt.Errorf("error opening source file: %v", err)
	}
	defer srcFile.Close()

	dstFile, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
	if err != nil {
		return fmt.Errorf("error opening destination file: %v", err)
	}
	defer dstFile.Close()

	_, err = io.Copy(dstFile, srcFile)
	if err != nil {
		return fmt.Errorf("error copying file: %v", err)
	}

	return dstFile.Sync()
}