Рефакторит формирование RSS-ленты подкаста

eleventy.config.js

@@ -25,7 +25,6 @@ export default async function(eleventyConfig) {
         templateFormats: [
             'md',
             'njk',
-            '11ty.js',
         ],
     };
 };

src/eleventy-config/filters.js

@@ -1,6 +1,7 @@
 import hyphenLibRu from 'hyphen/ru/index.js';
 import markdownIt from 'markdown-it';
 import htmlmin from 'html-minifier-terser';
+import { stripHeadings, stripLists } from '../libs/markdown-transforms.js';
 
 const markdown = markdownIt({
     html: true,
@@ -61,12 +62,33 @@ export default function(eleventyConfig) {
         return markdown.renderInline(value);
     });
 
-    eleventyConfig.addFilter('htmlmin', (value) => {
-        return htmlmin.minify(
+    eleventyConfig.addFilter('htmlmin', async(value) => {
+        return await htmlmin.minify(
             value, {
                 collapseWhitespace: true,
                 removeEmptyElements: true,
             }
         );
     });
+
+    eleventyConfig.addFilter('duration', (time) => {
+        // если длительность берётся из json-файла, то она задана в миллисекундах
+        if (typeof time === 'number') {
+            return Math.round(time / 1000);
+        }
+
+        return time.split(':').reduceRight((acc, item, index, items) => {
+            return acc += parseFloat(item) * Math.pow(60, items.length - 1 - index);
+        }, 0);
+    });
+
+    const podcastMarkdown = markdownIt({
+        html: true,
+    })
+        .use(stripHeadings)
+        .use(stripLists);
+
+    eleventyConfig.addFilter('podcastMarkdown', (content) => {
+        return podcastMarkdown.render(content);
+    });
 };

src/libs/markdown-transforms.js

@@ -0,0 +1,62 @@
+function stripHeadings(md) {
+    md.core.ruler.push('strip_headings', (state) => {
+        state.tokens.forEach((token) => {
+            if (token.type === 'heading_open') {
+                token.tag = 'p';
+                token.type = 'paragraph_open';
+            }
+
+            if (token.type === 'heading_close') {
+                token.tag = 'p';
+                token.type = 'paragraph_close';
+            }
+        });
+    });
+}
+
+function stripLists(md) {
+    md.core.ruler.push('strip_lists', (state) => {
+        let newTokens = [];
+        let isListItemProcessing = false;
+
+        state.tokens.forEach((token) => {
+            if (token.type === 'bullet_list_open') {
+                const listOpenToken = new state.Token('html_paragraph', 'p', 1);
+                newTokens.push(listOpenToken);
+                return;
+            }
+
+            if (token.type === 'bullet_list_close') {
+                const listCloseToken = new state.Token('html_paragraph', 'p', -1);
+                newTokens.push(listCloseToken);
+                return;
+            }
+
+            if (token.type === 'list_item_open') {
+                isListItemProcessing = true;
+                return;
+            }
+
+            if (token.type === 'list_item_close') {
+                isListItemProcessing = false;
+                return;
+            }
+
+            if (token.type === 'inline' && isListItemProcessing) {
+                const bulletToken = new state.Token('html_inline', '', 0);
+                bulletToken.content = '• ';
+                token.children.unshift(bulletToken);
+
+                const breakToken = new state.Token('html_inline', '', 0);
+                breakToken.content = '<br>';
+                token.children.push(breakToken);
+            }
+
+            newTokens.push(token);
+        });
+
+        state.tokens = newTokens;
+    });
+}
+
+export { stripHeadings, stripLists };

src/pages/podcast/feed.njk

@@ -0,0 +1,75 @@
+---
+permalink: /podcast/feed/index.xml
+---
+
+<?xml version='1.0' encoding='utf-8'?>
+<rss
+    version='2.0'
+    xmlns:atom='http://www.w3.org/2005/Atom'
+    xmlns:itunes='http://www.itunes.com/dtds/podcast-1.0.dtd'
+    xmlns:content='http://purl.org/rss/1.0/modules/content/'
+>
+    <channel>
+        <title>{{podcast.title}}</title>
+        <description><![CDATA[{{podcast.description | inlineMarkdown | safe}}]]></description>
+        <copyright>{{podcast.copyright}}</copyright>
+        <language>{{podcast.language}}</language>
+        <link>{{podcast.url}}</link>
+
+        <atom:link href='{{podcast.url}}feed/' rel='self' type='application/rss+xml'/>
+
+        <itunes:subtitle>{{podcast.subtitle}}</itunes:subtitle>
+        <itunes:type>{{podcast.type}}</itunes:type>
+        <itunes:author>{{podcast.author}}</itunes:author>
+        <itunes:explicit>{{podcast.explicit}}</itunes:explicit>
+        <itunes:owner>
+            <itunes:name>{{podcast.owner.name}}</itunes:name>
+            <itunes:email>{{podcast.owner.email}}</itunes:email>
+        </itunes:owner>
+        <itunes:image href='{{podcast.url}}cover.png'/>
+
+        {% for category in podcast.categories %}
+            <itunes:category text='{{category.title}}'>
+                {% for categoryItem in category.items %}
+                    <itunes:category text='{{categoryItem}}'/>
+                {% endfor %}
+            </itunes:category>
+        {% endfor %}
+
+        {% for episode in collections.episodes | reverse %}
+            {% set hosts = episode.data.hosts | join(', ') %}
+            <item>
+                <title>{{episode.fileSlug}}. {{episode.data.title}}</title>
+                <link>{{podcast.url}}{{episode.fileSlug}}/</link>
+                <pubDate>{{episode.date.toUTCString()}}</pubDate>
+                {% set hostsAndChaptersBlock %}
+                    <p>Ведущие: {{hosts}}</p>
+                    {% if episode.data.chapters.length > 0 %}
+                        <p>Темы</p>
+                        <p>
+                            {% for chapter in episode.data.chapters %}
+                                {{chapter.time}} {{chapter.title}}{% if not loop.last %}<br>{% endif %}
+                            {% endfor %}
+                        </p>
+                    {% endif %}
+                {% endset %}
+                <description><![CDATA[
+                    {{hostsAndChaptersBlock | safe}}
+                    {{episode.rawInput | podcastMarkdown | htmlmin | safe }}
+                ]]></description>
+                <guid isPermaLink='true'>{{podcast.url}}episodes/{{episode.fileSlug}}.mp3</guid>
+                <enclosure
+                    type='audio/mpeg'
+                    url='{{podcast.url}}episodes/{{episode.fileSlug}}.mp3'
+                    length='{{episode.data.fileSize}}'
+                />
+                <itunes:episode>{{episode.fileSlug}}</itunes:episode>
+                <itunes:duration>{{episode.data.duration | duration}}</itunes:duration>
+                <itunes:author>{{hosts}}</itunes:author>
+                <itunes:explicit>{{podcast.explicit}}</itunes:explicit>
+                <itunes:summary>{{episode.date | ruDate}}: {{episode.data.title}}. {{hosts}}</itunes:summary>
+                <itunes:image href='{{podcast.url}}cover.png'/>
+            </item>
+        {% endfor %}
+    </channel>
+</rss>