package main

import (
	"html"
	"time"
)

/*
	post.File = file
	post.Title = title
	post.Date = date
	post.Tags = tags
*/

// use this to check for valid feed: https://validator.w3.org/feed/
func generateFeed(domain string, p *Posts) []byte {
	feed := `<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
  <title>ScerbaDotOrg</title>
  <subtitle>Blog feed</subtitle>
  <link rel="self" href="https://` + domain + `/atom.xml"/>
  <link href="https://` + domain + `"/>
  <author>
    <name>Alex Scerba</name>
  </author>
  <id>https://` + domain + `/</id>
  <updated>` + time.Now().UTC().Format("2006-01-02T15:04:05.000Z") + `</updated>`

	for _, post := range p.Collection {
		entry := `
  <entry>
    <title>` + html.EscapeString(post.Title) + `</title>
    <link href="https://` + domain + `/posts/` + post.File + `.html"/>
    <id>https://` + domain + `/posts/` + post.File + `</id>
    <published>` + post.Date + `T00:00:00.000Z</published>
    <updated>` + post.Date + `T00:00:00.000Z</updated>
    <summary>Blog post</summary>`
		entry = entry + `
  </entry>`
		feed = feed + entry
	}
	feed = feed + `
</feed>`

	return []byte(feed)
}