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The builder.io content API, however, exposes the same\n * article data with clean URLs, so we query it directly:\n *\n * GET https://cdn.builder.io/api/v3/content/news?apiKey=...&limit=100\n *\n * Items carry data.title, data.slug -> https://www.rmpbs.org/news/, and\n * data.date. Government & Politics is its own category, so we filter precisely\n * by category id rather than guesses.\n *\n * The apiKey is the public one baked into rmpbs.org's own HTML.\n *\n * Subscribe to this URL in Slack: /feed subscribe \n */\n\nconst BUILDER_API_KEY = \"cc0dc7f878294229b6e5d2dece1e16de\";\n// \"Government & Politics\" news-category id.\nconst GOV_CATEGORY_ID = \"8565380f538e4588906b56514c64b5d5\";\n\nconst API_URL =\n `https://cdn.builder.io/api/v3/content/news?apiKey=${BUILDER_API_KEY}` +\n `&limit=100&includeUnpublished=false`;\n\nconst SOURCE_URL = \"https://www.rmpbs.org/news/government\";\nconst FEED_TITLE = \"Rocky Mountain PBS — Government & Politics (unofficial)\";\nconst FEED_DESC =\n \"Latest Government & Politics news from Rocky Mountain PBS, via their content API.\";\n\n// Drop stories older than this many days.\nconst MAX_AGE_DAYS = 60;\n\ninterface Item {\n title: string;\n url: string;\n pub: Date;\n section: string;\n}\n\nfunction xmlEscape(s: string): string {\n return s\n .replace(/&/g, \"&\")\n .replace(//g, \">\")\n .replace(/\"/g, \""\")\n .replace(/'/g, \"'\");\n}\n\n// Turn builder.io news entries into feed items, filtered to the target category.\nfunction parse(payload: unknown): Item[] {\n const items: Item[] = [];\n const seen = new Set();\n const results = (payload as { results?: unknown[] })?.results ?? [];\n const cutoff = Date.now() - MAX_AGE_DAYS * 24 * 60 * 60 * 1000;\n\n for (const entry of results) {\n const data = (entry as { data?: Record })?.data;\n if (!data) continue;\n\n const slug = data[\"slug\"] as string | undefined;\n const title = (data[\"title\"] as string | undefined)?.trim();\n const date = data[\"date\"] as number | undefined;\n if (!slug || !title || !date) continue;\n\n // Only items tagged with the Government & Politics category.\n const cats = (data[\"categories\"] as Array<{\n category?: { id?: string };\n }>) ?? [];\n const isGov = cats.some((c) => c.category?.id === GOV_CATEGORY_ID);\n if (!isGov) continue;\n\n const url = `https://www.rmpbs.org/news/${slug}`;\n if (seen.has(url)) continue;\n\n const pub = new Date(date);\n if (pub.getTime() < cutoff) continue;\n\n seen.add(url);\n items.push({ title, url, pub, section: \"Government & Politics\" });\n }\n\n items.sort((a, b) => b.pub.getTime() - a.pub.getTime());\n return items;\n}\n\nfunction buildRss(items: Item[], selfUrl: string): string {\n const now = new Date().toUTCString();\n const parts: string[] = [\n '',\n '',\n \"\",\n `${xmlEscape(FEED_TITLE)}`,\n `${xmlEscape(SOURCE_URL)}`,\n `${xmlEscape(FEED_DESC)}`,\n \"en-us\",\n `${now}`,\n ``,\n ];\n\n for (const it of items) {\n parts.push(\n \"\",\n `${xmlEscape(it.title)}`,\n `${xmlEscape(it.url)}`,\n `${xmlEscape(it.url)}`,\n `${xmlEscape(it.section)}`,\n `${xmlEscape(it.section)}`,\n `${it.pub.toUTCString()}`,\n \"\",\n );\n }\n\n parts.push(\"\", \"\");\n return parts.join(\"\\n\");\n}\n\nexport default async function (req: Request): Promise {\n try {\n const resp = await fetch(API_URL, {\n headers: { \"Accept\": \"application/json\" },\n });\n if (!resp.ok) {\n return new Response(`Upstream API failed: ${resp.status}`, {\n status: 502,\n });\n }\n const payload = await resp.json();\n const items = parse(payload);\n if (items.length === 0) {\n return new Response(\n \"No articles parsed — RMPBS content API or category may have changed.\",\n { status: 500 },\n );\n }\n const rss = buildRss(items, req.url);\n return new Response(rss, {\n headers: {\n \"Content-Type\": \"application/rss+xml; charset=utf-8\",\n // Cache 10 min so frequent reader polls don't hammer the API.\n \"Cache-Control\": \"public, max-age=600\",\n },\n });\n } catch (err) {\n return new Response(`Error: ${err instanceof Error ? 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Code