petrbalvin
2da9ec9bba
Move feed_xml, feed_item, feed_json, json_feed_item, rfc822_date, iso_date, and sitemap_xml out of Server into a dedicated FeedHelpers module included via helpers. Reduces Server from ~500 to ~400 lines and separates feed generation concerns from routing.
105 lines
3.1 KiB
Ruby
105 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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module Volumen
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# RSS, JSON Feed, and sitemap helpers extracted from Server to keep the
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# main class focused on configuration and routing.
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module FeedHelpers
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private
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def feed_xml
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site = config.site
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items = published_posts.first(20).map { |post| feed_item(post) }.join("\n")
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<<~XML
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<?xml version="1.0" encoding="UTF-8"?>
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<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
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<channel>
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<title>#{escape(site["title"])}</title>
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<link>#{escape(base_url)}</link>
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<description>#{escape(site["description"])}</description>
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<language>#{escape(site["language"])}</language>
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#{items}
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</channel>
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</rss>
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XML
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end
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def feed_item(post)
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link = "#{base_url}/#{post.slug}"
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pub = if post.metadata["date"]
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"\n <pubDate>#{escape(rfc822_date(post))}</pubDate>"
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else
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""
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end
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creator = post.fediverse_creator
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creator_tag = creator ? "\n <dc:creator>#{escape(creator)}</dc:creator>" : ""
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<<~XML.chomp
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<item>
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<title>#{escape(post.title)}</title>
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<link>#{escape(link)}</link>
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<guid>#{escape(link)}</guid>
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<description>#{escape(post.excerpt)}</description>#{pub}#{creator_tag}
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</item>
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XML
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end
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def rfc822_date(post)
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value = post.metadata["date"]
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case value
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when Date then value.to_time.rfc822
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when Time then value.rfc822
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end
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end
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def feed_json
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site = config.site
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feed_url = "#{base_url}/api/volumen/feed.json"
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{
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"version" => "https://jsonfeed.org/version/1.1",
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"title" => site["title"],
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"home_page_url" => base_url,
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"feed_url" => feed_url,
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"description" => site["description"],
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"language" => site["language"],
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"items" => published_posts.first(20).map { |post| json_feed_item(post) }
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}
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end
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def json_feed_item(post)
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link = "#{base_url}/#{post.slug}"
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item = {
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"id" => link,
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"url" => link,
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"title" => post.title,
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"content_html" => post.html,
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"summary" => post.excerpt,
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"date_published" => iso_date(post.metadata["date"]),
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"tags" => post.tags
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}
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author = post.fediverse_creator || site_fediverse_creator
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item["authors"] = [{ "name" => author }] if author
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item.reject { |_k, v| v.nil? || v == "" || v == [] }
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end
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def iso_date(value)
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case value
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when Date then value.iso8601
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when Time then value.to_date.iso8601
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end
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end
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def sitemap_xml
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urls = published_posts.map do |post|
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url = " <url><loc>#{escape("#{base_url}/#{post.slug}")}</loc>"
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url << "<lastmod>#{escape(post.date_string)}</lastmod>" if post.date_string
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url << "</url>"
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end.join("\n")
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<<~XML
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<?xml version="1.0" encoding="UTF-8"?>
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<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
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#{urls}
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</urlset>
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XML
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end
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end
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end
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