package main

import (
	"time"
)

var neverExpire = time.Unix(0, 0)

// Determine if a file with expiry set to "ts" has expired yet
func isTsExpired(ts time.Time) bool {
	now := time.Now()
	return ts != neverExpire && now.After(ts)
}

// Determine if the given filename is expired
func isFileExpired(filename string) (bool, error) {
	metadata, err := metadataRead(filename)
	if err != nil {
		return false, err
	}

	return isTsExpired(metadata.Expiry), nil
}