1 files changed, 87 insertions, 0 deletions
diff --git a/src/utility/feed/atom.ts b/src/utility/feed/atom.ts
new file mode 100644
index 0000000..d8827e9
--- /dev/null
+++ b/src/utility/feed/atom.ts
@@ -0,0 +1,87 @@
+
+
+
+/*** UTILITY ------------------------------------------ ***/
+
+import { BaseFeed, escapeXML, type FeedOptions } from "./helper.ts";
+
+interface AtomEntry {
+  content?: {
+    body: string;
+    type?: string;
+  };
+  id: string;
+  image?: string;
+  link: string;
+  summary: string;
+  title: string;
+  updated?: Date;
+}
+
+/*** EXPORT ------------------------------------------- ***/
+
+export class FeedAtom extends BaseFeed<AtomEntry> {
+  constructor(options: FeedOptions) {
+    super(options);
+  }
+
+  build(): string {
+    const xmlParts: string[] = [
+      `<?xml version="1.0" encoding="UTF-8"?>\n`,
+      `<feed xmlns="http://www.w3.org/2005/Atom">\n`,
+      `  <title>${escapeXML(this.options.title)}</title>\n`,
+      `  <subtitle>${escapeXML(this.options.description)}</subtitle>\n`,
+      `  <link rel="alternate" href="${escapeXML(this.options.link)}"/>\n`,
+      `  <link rel="self" href="${escapeXML(this.options.link)}"/>\n`,
+      `  <updated>${this.options.updated?.toISOString()}</updated>\n`,
+      `  <generator>${this.options.generator || "the webb blog"}</generator>\n`,
+      `  <id>${escapeXML(this.options.link)}</id>\n`
+    ];
+
+    for (const author of this.options.authors) {
+      xmlParts.push(`  <author>\n`);
+
+      if (author.name)
+        xmlParts.push(`    <name>${escapeXML(author.name)}</name>\n`);
+
+      if (author.email)
+        xmlParts.push(`    <email>${escapeXML(author.email)}</email>\n`);
+
+      if (author.link)
+        xmlParts.push(`    <uri>${escapeXML(author.link)}</uri>\n`);
+
+      xmlParts.push(`  </author>\n`);
+    }
+
+    if (this.options.icon) {
+      xmlParts.push(`  <icon>${escapeXML(this.options.icon)}</icon>\n`);
+      xmlParts.push(`  <logo>${escapeXML(this.options.icon)}</logo>\n`);
+    }
+
+    if (this.options.feed)
+      xmlParts.push(`  <link rel="self" href="${escapeXML(this.options.feed)}"/>\n`);
+
+    for (const entry of this.items) {
+      xmlParts.push(
+        `  <entry>\n`,
+        `    <title type="html">${escapeXML(entry.title)}</title>\n`,
+        `    <link href="${escapeXML(entry.link)}"/>\n`,
+        `    <id>${escapeXML(entry.id)}</id>\n`,
+        `    <updated>${entry.updated?.toISOString() || new Date().toISOString()}</updated>\n`,
+        `    <summary type="html">${escapeXML(entry.summary)}</summary>\n`,
+        `    <content type="${entry.content?.type || "html"}">${escapeXML(entry.content?.body || entry.summary)}</content>\n`,
+        entry.image ?
+          `    <media:thumbnail url="${escapeXML(entry.image)}" />\n` :
+          "",
+        `  </entry>\n`
+      );
+    }
+
+    for (const category of this.categories) {
+      xmlParts.push(`  <category term="${escapeXML(category)}"/>\n`);
+    }
+
+    xmlParts.push("</feed>");
+    return xmlParts.join("");
+  }
+}