@haxtheweb/haxcms-nodejs/dist/lib/RSS.js

HAXcms single and multisite nodejs server, api, and administration

"use strict";

const fs = require('fs-extra');
const implode = require('locutus/php/strings/implode');
// simple RSS / Atom feed generator from a JSON outline schema object
class FeedMe {
  /**
   * Generate the RSS 2.0 header
   */
  getRSSFeed(site) {
    let domain = "";
    if (site.manifest.metadata.site.domain) {
      domain = site.manifest.metadata.site.domain;
    }
    return `<?xml version="1.0" encoding="utf-8"?>
<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0">
<channel>
  <title>${site.manifest.title}</title>
  <link>${domain}/rss.xml</link>
  <description>${site.manifest.description}</description>
  <copyright>Copyright (C) ${new Date().getFullYear()} ${domain}</copyright>
  <language>${site.language}</language>
  <lastBuildDate>${new Date(site.manifest.metadata.site.updated).toISOString()}</lastBuildDate>
  <atom:link href="${domain}/rss.xml" rel="self" type="application/rss+xml"/>
  ${this.rssItems(site)}
</channel>
</rss>`;
  }
  /**
   * Generate RSS items.
   */
  rssItems(site, limit = 25) {
    let output = '';
    let domain = "";
    let count = 0;
    if (site.manifest.metadata.site.domain) {
      domain = site.manifest.metadata.site.domain;
    }
    let items = site.sortItems('created');
    for (var key in items) {
      let item = items[key];
      let tags = '';
      // beyond edge but don't want this to erorr on write
      if (!item.metadata) {
        item.metadata = {};
      }
      if (!item.metadata.created) {
        item.metadata.created = Math.floor(Date.now() / 1000);
        item.metadata.updated = Math.floor(Date.now() / 1000);
      }
      if (item.metadata.tags) {
        tags = implode(',', item.metadata.tags);
      }
      if (count < limit) {
        output += `
  <item>
    <title>${item.title}</title>
    <link>
    ${domain + '/' + item.location.replace('pages/', '').replace('/index.html', '')}
    </link>
    <description>
        <![CDATA[ ${fs.readFileSync(site.siteDirectory + '/' + item.location, {
          encoding: 'utf8',
          flag: 'r'
        })} ]]>
    </description>
    <category>${tags}</category>
    <guid>
    ${domain + '/' + item.location.replace('pages/', '').replace('/index.html', '')}
    </guid>
    <pubDate>${new Date(item.metadata.created).toISOString()}</pubDate>
  </item>`;
      }
      count++;
    }
    return output;
  }
  /**
   * Generate the atom feed
   */
  getAtomFeed(site) {
    let domain = "";
    if (site.manifest.metadata.site.domain) {
      domain = site.manifest.metadata.site.domain;
    }
    return `<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
  <title>${site.manifest.title}</title>
  <link href="${domain}/atom.xml" rel="self" />
  <subtitle>${site.manifest.description}</subtitle>
  <updated>${new Date(site.manifest.metadata.site.updated).toISOString()}</updated>
  <author>
      <name>${site.manifest.author}</name>
  </author>
  <id>${domain}/feed</id>
  ${this.atomItems(site)}
</feed>`;
  }
  /**
   * Generate Atom items.
   */
  async atomItems(site, limit = 25) {
    let output = '';
    let domain = "";
    let count = 0;
    if (site.manifest.metadata.site.domain) {
      domain = site.manifest.metadata.site.domain;
    }
    let items = site.sortItems('created');
    for (var key in items) {
      let item = items[key];
      let tags = '';
      // beyond edge but don't want this to erorr on write
      if (!item.metadata) {
        item.metadata = {};
      }
      if (!item.metadata.created) {
        item.metadata.created = Math.floor(Date.now() / 1000);
        item.metadata.updated = Math.floor(Date.now() / 1000);
      }
      if (item.metadata.tags) {
        for (var key2 in item.metadata.tags) {
          let tag = item.metadata.tags[key2];
          tags += '<category term="' + tag + '" label="' + tag + '" />';
        }
      }
      if (count < limit) {
        output += `
  <entry>
    <title>${item.title}</title>
    <id>${domain}/${item.location.replace('pages/', '').replace('/index.html', '')}</id>
    <updated>${new Date(item.metadata.updated).toISOString()}</updated>
    <published>${new Date(item.metadata.created).toISOString()}</published>
    <summary>${item.description}</summary>
    <link href="${domain}/${item.location.replace('pages/', '').replace('/index.html', '')}"/>
    ${tags}]
    <content type="html">
      <![CDATA[ ${fs.readFileSync(site.siteDirectory + '/' + item.location, {
          encoding: 'utf8',
          flag: 'r'
        })} ]]>
    </content>
  </entry>`;
      }
      count++;
    }
    return output;
  }
}
module.exports = FeedMe;