package main

import (
	"fmt"
	"os"
	"path/filepath"
	"time"

	"github.com/gorilla/feeds"
)

func generateRSS() error {
	rssLock.Lock()
	defer rssLock.Unlock()

	episodes, err := scanEpisodes()
	if err != nil {
		return err
	}

	//	rss := fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
	//     <rss version="2.0"
	//     xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd"
	//     xmlns:podcast="https://podcastindex.org/namespace/1.0"
	//     xmlns:atom="http://www.w3.org/2005/Atom"
	//     xmlns:content="http://purl.org/rss/1.0/modules/content/">
	//    <channel>
	//    <description>%s</description>
	//	<title>%s</title>
	//	<link>%s</link>`, podTitle, podTitle, baseURL)

	feed := &feeds.Feed{
		Title:       podTitle,
		Link:        &feeds.Link{Href: baseURL},
		Description: podDesc,
		Author:      &feeds.Author{Name: podAuthor},
		Created:     time.Now(),
		Copyright:   podRights,
	}

	for _, ep := range episodes {

		epBaseUrl := baseURL + "/audio/" + filepath.Base(ep.File)

		feed.Add(&feeds.Item{
			Title:       ep.Title,
			Link:        &feeds.Link{Href: epBaseUrl},
			Description: ep.Description,
			Enclosure: &feeds.Enclosure{
				Url:    epBaseUrl,
				Length: fmt.Sprintf("%d", ep.Size),
				Type:   "audio/mpeg",
			},
			Created: time.Now(),
		})

	}

	// Genera RSS
	rss, _ := feed.ToRss()
	return os.WriteFile("feed.xml", []byte(rss), 0644)

}