package torrent

import (
	"fmt"
	"strings"
)

func getFileIDs(files []*File) string {
	var fileIDs []string
	for _, file := range files {
		if file.ID != 0 {
			fileIDs = append(fileIDs, fmt.Sprintf("%d", file.ID))
		}
	}
	return strings.Join(fileIDs, ",")
}