1 files changed, 85 insertions, 0 deletions
diff --git a/src/utility/feed/rss.ts b/src/utility/feed/rss.ts
new file mode 100644
index 0000000..c3971bb
--- /dev/null
+++ b/src/utility/feed/rss.ts
@@ -0,0 +1,85 @@
+
+
+
+/*** UTILITY ------------------------------------------ ***/
+
+import { BaseFeed, escapeXML, type FeedOptions } from "./helper.ts";
+
+interface RssItem {
+  content: {
+    body: string;
+  };
+  description: string;
+  id: string;
+  image?: string;
+  link: string;
+  title: string;
+  updated?: Date;
+}
+
+/*** EXPORT ------------------------------------------- ***/
+
+export class FeedRSS extends BaseFeed<RssItem> {
+  constructor(options: FeedOptions) {
+    super(options);
+  }
+
+  build(): string {
+    const xmlParts: string[] = [
+      `<?xml version="1.0" encoding="UTF-8"?>\n`,
+      `<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:wfw="http://wellformedweb.org/CommentAPI/">\n`,
+      `  <channel>\n`,
+      `    <title><![CDATA[${escapeXML(this.options.title)}]]></title>\n`,
+      `    <description><![CDATA[${escapeXML(this.options.description)}]]></description>\n`,
+      `    <link>${escapeXML(this.options.link)}</link>\n`,
+      `    <lastBuildDate>${this.options.updated?.toUTCString()}</lastBuildDate>\n`,
+      `    <language>${this.options.language || "en-US"}</language>\n`,
+      `    <generator>${escapeXML(this.options.generator || "the webb blog")}</generator>\n`,
+      `    <atom:link href="${escapeXML(this.options.link)}" rel="self" type="application/rss+xml"/>\n`
+    ];
+
+    if (this.options.authors.length > 0) {
+      const authorXml = this.options.authors.map((author) => {
+        const escapedEmail = author.email ? escapeXML(author.email) : "";
+        const escapedName = author.name ? escapeXML(author.name) : "";
+        const emailPart = escapedEmail ? `${escapedEmail} ` : "";
+
+        return (
+          `    <webMaster>${emailPart}(${escapedName})</webMaster>\n` +
+          `    <managingEditor>${emailPart}(${escapedName})</managingEditor>\n`
+        );
+      }).join("");
+
+      xmlParts.push(authorXml);
+    }
+
+    if (this.items.length > 0) {
+      const itemsXml = this.items.map((item) => {
+        const contentXml = item.content ?
+          `      <content:encoded><![CDATA[${escapeXML(item.content.body)}]]></content:encoded>\n` :
+          "";
+
+        const imageXml = item.image ?
+          `      <media:thumbnail url="${escapeXML(item.image)}" />\n` :
+          "";
+
+        return (
+          `    <item>\n` +
+          `      <title>${escapeXML(item.title)}</title>\n` +
+          `      <link>${escapeXML(item.link)}</link>\n` +
+          `      <guid>${escapeXML(item.id)}</guid>\n` +
+          `      <pubDate>${item.updated?.toUTCString() || new Date().toUTCString()}</pubDate>\n` +
+          `      <description>${escapeXML(item.description)}</description>\n` +
+          contentXml +
+          imageXml +
+          `    </item>\n`
+        );
+      }).join("");
+
+      xmlParts.push(itemsXml);
+    }
+
+    xmlParts.push(`  </channel>\n`, `</rss>`);
+    return xmlParts.join("");
+  }
+}