Add digest RSS feed endpoint for blog consumers

README.md

@@ -41,6 +41,11 @@ Set these in `.env.local`:
 - `POST /api/digest` requires `x-api-key: <CRON_API_KEY>`
 - Used for cron-based digest publishing
 
+## RSS feeds
+
+- `GET /api/rss` - Standard digest RSS feed for blog/article consumers
+- `GET /api/podcast/rss` - Podcast RSS feed (audio episodes)
+
 ## MP3 Audio Hosting
 
 Upload and host MP3 files for individual blog posts.

src/app/api/rss/route.ts

@@ -0,0 +1,143 @@
+import { NextResponse } from "next/server";
+import { createClient } from "@supabase/supabase-js";
+import { extractExcerpt, extractTitle } from "@/lib/podcast";
+
+export const dynamic = "force-dynamic";
+
+interface DigestRow {
+  id: string;
+  date: string | null;
+  content: string;
+  timestamp: number | string;
+  tags: string[] | null;
+}
+
+function escapeXml(input: string): string {
+  return input
+    .replace(/&/g, "&")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;")
+    .replace(/'/g, "&apos;");
+}
+
+function cdataSafe(input: string): string {
+  return input.replaceAll("]]>", "]]]]><![CDATA[>");
+}
+
+function asRfc2822(value: string | number | null | undefined): string {
+  if (typeof value === "number") {
+    return new Date(value).toUTCString();
+  }
+
+  if (typeof value === "string" && value.trim().length > 0) {
+    const numeric = Number(value);
+    if (Number.isFinite(numeric)) {
+      return new Date(numeric).toUTCString();
+    }
+    return new Date(value).toUTCString();
+  }
+
+  return new Date().toUTCString();
+}
+
+function buildErrorFeed(baseUrl: string): string {
+  return `<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0">
+  <channel>
+    <title>OpenClaw Daily Digest</title>
+    <link>${escapeXml(baseUrl)}</link>
+    <description>Error loading digest RSS feed. Please try again later.</description>
+  </channel>
+</rss>`;
+}
+
+export async function GET(request: Request) {
+  const url = new URL(request.url);
+  const baseUrl =
+    process.env.NEXT_PUBLIC_SITE_URL?.replace(/\/$/, "") ||
+    `${url.protocol}//${url.host}`;
+
+  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
+  const supabaseKey =
+    process.env.SUPABASE_SERVICE_ROLE_KEY || process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
+
+  if (!supabaseUrl || !supabaseKey) {
+    return new NextResponse(buildErrorFeed(baseUrl), {
+      status: 500,
+      headers: {
+        "Content-Type": "application/xml; charset=utf-8",
+      },
+    });
+  }
+
+  try {
+    const supabase = createClient(supabaseUrl, supabaseKey);
+
+    const { data, error } = await supabase
+      .from("blog_messages")
+      .select("id, date, content, timestamp, tags")
+      .order("timestamp", { ascending: false })
+      .limit(100);
+
+    if (error) {
+      throw error;
+    }
+
+    const rows = (data || []) as DigestRow[];
+
+    const itemsXml = rows
+      .map((row) => {
+        const title = escapeXml(extractTitle(row.content || "Daily Digest"));
+        const excerpt = escapeXml(extractExcerpt(row.content || "", 420));
+        const pubDate = asRfc2822(row.timestamp || row.date);
+        const postUrl = `${baseUrl}/?post=${row.id}`;
+        const guid = `openclaw-digest-${row.id}`;
+        const categories = (row.tags || [])
+          .map((tag) => `<category>${escapeXml(tag)}</category>`)
+          .join("");
+
+        return `<item>
+  <title>${title}</title>
+  <link>${escapeXml(postUrl)}</link>
+  <guid isPermaLink="false">${escapeXml(guid)}</guid>
+  <pubDate>${pubDate}</pubDate>
+  <description>${excerpt}</description>
+  <content:encoded><![CDATA[${cdataSafe(row.content || "")}]]></content:encoded>
+  ${categories}
+</item>`;
+      })
+      .join("\n");
+
+    const lastBuildDate =
+      rows.length > 0 ? asRfc2822(rows[0].timestamp || rows[0].date) : new Date().toUTCString();
+
+    const feedXml = `<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+<channel>
+  <title>OpenClaw Daily Digest</title>
+  <link>${escapeXml(baseUrl)}</link>
+  <description>Daily digest posts from OpenClaw Blog Backup.</description>
+  <language>en-us</language>
+  <lastBuildDate>${lastBuildDate}</lastBuildDate>
+  <atom:link href="${escapeXml(`${baseUrl}/api/rss`)}" rel="self" type="application/rss+xml"/>
+  ${itemsXml}
+</channel>
+</rss>`;
+
+    return new NextResponse(feedXml, {
+      headers: {
+        "Content-Type": "application/xml; charset=utf-8",
+        "Cache-Control": "public, max-age=300",
+      },
+    });
+  } catch (error) {
+    console.error("Error generating digest RSS feed:", error);
+    return new NextResponse(buildErrorFeed(baseUrl), {
+      status: 500,
+      headers: {
+        "Content-Type": "application/xml; charset=utf-8",
+      },
+    });
+  }
+}