package main

import "time"

type ByPubDate []RssItem

func (a ByPubDate) Len() int           { return len(a) }
func (a ByPubDate) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
func (a ByPubDate) Less(i, j int) bool { return parsePubDate(a[i].PubDate).After(parsePubDate(a[j].PubDate)) }

func parsePubDate(pubDateStr string) time.Time {
	// Add the appropriate time parsing logic based on your date format
	// For example, if your date format is "Mon, 02 Jan 2006 15:04:05 -0700",
	// you can use the following parsing code
	parsedTime, _ := time.Parse("Mon, 02 Jan 2006 15:04:05 -0700", pubDateStr)
	return parsedTime
}