RSS Feed Generator

A simple service to generate RSS feeds for blogs that don't provide their own.

\n\n`;\n\n return c.html(html);\n }\n\n // Serve JSON for regular API clients\n return c.json({\n service: \"rss generator\",\n description:\n \"A simple service to generate rss feeds for blogs that don't provide their own.\",\n author: \"Arti Villa\",\n license: \"MIT\",\n endpoints: {\n status: {\n path: \"/status\",\n method: \"GET\",\n description: \"JSON status of all feeds\",\n },\n rss_feed: {\n path: \"/rss/.xml\",\n method: \"GET\",\n description: \"RSS feed for a specific blog\",\n },\n feeds_list: {\n path: \"/feeds\",\n method: \"GET\",\n description: \"JSON list of available feeds\",\n },\n favicon: {\n path: \"/favicon.ico\",\n method: \"GET\",\n description: \"Site favicon (SVG format)\",\n },\n og_image: {\n path: \"/og-image\",\n method: \"GET\",\n description: \"Open Graph image for social sharing\",\n },\n },\n });\n});\n\n// JSON status endpoint\napp.get(\"/status\", async (c) => {\n try {\n // Get all configured blogs\n const configuredBlogs = blogs as BlogConfig[];\n\n // Get metadata for each blog\n const blogStatus = await Promise.all(\n configuredBlogs.map(async (blog) => {\n try {\n const metadata = await blob.getJSON(`meta_${blog.slug}`);\n const hasRSSFeed = (await blob.get(`rss_${blog.slug}.xml`)) !== null;\n\n return {\n slug: blog.slug,\n name: blog.name,\n url: blog.url,\n rssUrl: `/rss/${blog.slug}.xml`,\n lastSuccessful: metadata?.lastSuccessful || null,\n postCount: metadata?.postCount || null,\n hasRSSFeed,\n status: hasRSSFeed ? \"active\" : \"pending\",\n };\n } catch (error) {\n return {\n slug: blog.slug,\n name: blog.name,\n url: blog.url,\n rssUrl: `/rss/${blog.slug}.xml`,\n lastSuccessful: null,\n postCount: null,\n hasRSSFeed: false,\n status: \"error\",\n };\n }\n }),\n );\n\n return c.json({\n service: \"RSS Feed Generator\",\n totalFeeds: blogStatus.length,\n activeFeeds: blogStatus.filter((b) => b.status === \"active\").length,\n feeds: blogStatus,\n });\n } catch (error) {\n console.error(\"Error getting status:\", error);\n return c.json(\n {\n service: \"RSS Feed Generator\",\n status: \"error\",\n error: \"Failed to load status information\",\n },\n 500,\n );\n }\n});\n\n// Serve RSS feeds\napp.get(\"/rss/:slug\", async (c) => {\n const slug = c.req.param(\"slug\");\n\n // Remove .xml extension if present\n const cleanSlug = slug?.replace(/\\.xml$/, \"\");\n\n if (!cleanSlug) {\n return c.text(\"Invalid slug\", 400);\n }\n\n try {\n const xml = await blob.get(`rss_${cleanSlug}.xml`);\n\n if (!xml) {\n return c.text(\n \"Feed not found or still building. Please try again later.\",\n 404,\n );\n }\n\n // Handle different blob return types\n let xmlString: string;\n if (typeof xml === \"string\") {\n xmlString = xml;\n } else if (xml instanceof Response) {\n xmlString = await xml.text();\n } else {\n xmlString = String(xml);\n }\n\n return c.text(xmlString, 200, {\n \"Content-Type\": \"application/rss+xml; charset=UTF-8\",\n \"Cache-Control\": \"public, max-age=3600\", // Cache for 1 hour\n });\n } catch (error) {\n console.error(`Error serving RSS for ${cleanSlug}:`, error);\n return c.text(\"Internal server error\", 500);\n }\n});\n\n// List available feeds (for debugging)\napp.get(\"/feeds\", async (c) => {\n try {\n const keys = await blob.list(\"rss_\");\n const feeds = keys.map((item) => {\n const key = typeof item === \"string\" ? item : item.key;\n return {\n slug: key.replace(\"rss_\", \"\").replace(\".xml\", \"\"),\n url: `/rss/${key.replace(\"rss_\", \"\")}`,\n };\n });\n\n return c.json({\n available_feeds: feeds,\n count: feeds.length,\n });\n } catch (error) {\n console.error(\"Error listing feeds:\", error);\n return c.text(\"Internal server error\", 500);\n }\n});\n\n// Serve favicon\napp.get(\"/favicon.ico\", async (c) => {\n try {\n const favicon = await readFile(\"/services/favicon.svg\", import.meta.url);\n return c.body(favicon, 200, {\n \"Content-Type\": \"image/svg+xml\",\n \"Cache-Control\": \"public, max-age=86400\", // Cache for 24 hours\n });\n } catch (error) {\n console.error(\"Error serving favicon:\", error);\n return c.text(\"Favicon not found\", 404);\n }\n});\n\n// Serve Open Graph image (using the same SVG)\napp.get(\"/og-image\", async (c) => {\n try {\n const ogImage = await readFile(\"/services/favicon.svg\", import.meta.url);\n return c.body(ogImage, 200, {\n \"Content-Type\": \"image/svg+xml\",\n \"Cache-Control\": \"public, max-age=86400\", // Cache for 24 hours\n });\n } catch (error) {\n console.error(\"Error serving OG image:\", error);\n return c.text(\"OG image not found\", 404);\n }\n});\n\nexport default app.fetch;\n","children",[],[93],"27d23e0a-6fa2-11f0-93d2-0224a6c84d84","generateFeed.cron.ts",88,["D",1754140269185],7,"import { blob } from \"https://esm.town/v/std/blob\";\nimport blogs from \"./blogs.json\" with { type: \"json\" };\nimport { scrapeBlog } from \"./services/scraper.ts\";\nimport { postsToRSS } from \"./services/rss.ts\";\nimport type { BlogConfig } from \"./services/types.ts\";\n\nexport default async function (interval: Interval) {\n console.log(`🚀 Starting RSS feed generation for ${blogs.length} blogs`);\n\n let successCount = 0;\n let errorCount = 0;\n\n for (const cfg of blogs as BlogConfig[]) {\n try {\n console.log(`\\n📝 Processing ${cfg.slug}...`);\n\n // Scrape the blog\n const posts = await scrapeBlog(cfg);\n\n if (posts.length === 0) {\n console.warn(`⚠️ No posts found for ${cfg.slug} - check selectors`);\n continue;\n }\n\n // Generate RSS XML\n const xml = postsToRSS(cfg, posts);\n\n // Store in blob storage\n await blob.set(`rss_${cfg.slug}.xml`, xml);\n\n // Store metadata about successful generation\n const metadata = {\n slug: cfg.slug,\n name: cfg.name,\n lastSuccessful: new Date().toISOString(),\n postCount: posts.length,\n url: cfg.url,\n };\n await blob.setJSON(`meta_${cfg.slug}`, metadata);\n\n console.log(`✅ Updated ${cfg.slug} RSS feed (${posts.length} posts)`);\n successCount++;\n } catch (error) {\n console.error(`❌ Failed to update ${cfg.slug}:`, error);\n errorCount++;\n }\n }\n\n console.log(\n `\\n🎉 RSS generation complete: ${successCount} success, ${errorCount} errors`,\n );\n}\n",[],[347],"4edd6910-6f9e-11f0-a873-0224a6c84d84","deno.json","4edd6a14-6f9e-11f0-a873-0224a6c84d84",69,["D",1754138616673],"{\n \"$schema\": \"https://raw.githubusercontent.com/denoland/deno/348900b8b79f4a434cab4c74b3bc8d4d2fa8ee74/cli/schemas/config-file.v1.json\",\n \"lock\": false,\n \"compilerOptions\": {\n \"noImplicitAny\": false,\n \"strict\": false,\n \"types\": [\n \"https://www.val.town/types/valtown.d.ts\"\n ],\n \"lib\": [\n \"dom\",\n \"dom.iterable\",\n \"dom.asynciterable\",\n \"deno.ns\",\n \"deno.unstable\"\n ]\n },\n \"lint\": {\n \"files\": {\n \"include\": [\n \"deno:/https/esm.town/**/*\"\n ]\n },\n \"rules\": {\n \"exclude\": [\n \"no-explicit-any\"\n ]\n }\n },\n \"node_modules_dir\": false,\n \"experimental\": {\n \"unstable-node-globals\": true,\n \"unstable-temporal\": true,\n \"unstable-worker-options\": true,\n \"unstable-sloppy-imports\": true\n }\n}",[],[355],"7e3ead8e-96d8-11f0-9195-0224a6c84d84","blogs.json","27e66e50-6f95-11f0-bfe1-0224a6c84d84",["D",1758451702348],13,"[\n {\n \"slug\": \"neynar\",\n \"name\": \"Neynar Blog\",\n \"url\": \"https://neynar.com/blog\",\n \"entrySelector\": \"a[href*='/blog/']:not([href='./blog'])\",\n \"titleSelector\": \"a[href*='/blog/']:not([href='./blog'])\",\n \"linkSelector\": \"a[href*='/blog/']:not([href='./blog'])\",\n \"dateSelector\": \"\",\n \"dateFormat\": \"MMM D, YYYY\",\n \"descriptionSelector\": \"p\",\n \"linkPrefix\": \"https://neynar.com/\",\n \"timezone\": \"America/Vancouver\",\n \"language\": \"en\"\n },\n {\n \"slug\": \"tessl\",\n \"name\": \"Tessl Blog\",\n \"url\": \"https://tessl.io/blog\",\n \"entrySelector\": \"a[href*='/blog/']:not([href='/blog'])\",\n \"titleSelector\": \".blog_article-bottom p.text-size-large\",\n \"linkSelector\": \"a[href*='/blog/']:not([href='/blog'])\",\n \"dateSelector\": \".blog_article-bottom .text-color-gray p.text-size-small\",\n \"dateFormat\": \"MMMM D, YYYY\",\n \"descriptionSelector\": \".blog_article-bottom p.text-size-large\",\n \"linkPrefix\": \"https://tessl.io\",\n \"timezone\": \"Europe/London\",\n \"language\": \"en\"\n },\n {\n \"slug\": \"loops\",\n \"name\": \"Loops Changelog\",\n \"url\": \"https://loops.so/changelog\",\n \"entrySelector\": \"div[data-framer-name='Entry']\",\n \"titleSelector\": \"h2 a\",\n \"linkSelector\": \"h2 a\",\n \"dateSelector\": \"div[data-framer-name='Date'] p\",\n \"dateFormat\": \"MMMM D, YYYY\",\n \"descriptionSelector\": \"div[data-framer-name='Content'] p:first-of-type\",\n \"linkPrefix\": \"https://loops.so\",\n \"timezone\": \"UTC\",\n \"language\": \"en\"\n }\n]\n",[],[363],"93f4d0f8-6fa6-11f0-8064-0224a6c84d84","README.md","22cb83e2-6f95-11f0-bfe1-0224a6c84d84",105,["D",1754142168590],18,"# rss generator\n\nrss generator that creates rss feeds for non-rss blogs\n\n![CleanShot 2025-08-02 at 06.18.39@2x.png](https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/d79f00e6-05f9-4056-0d70-8d61514c0f00/public)\n\n#### adding new entries\n\n1. Add a new entry to `/blogs.json` with CSS selectors\n2. The cron job will automatically pick it up on the next run or run it manually\n in generateFeed.cron.ts\n3. Feed will be available at `/rss/.xml`\n\n#### how it works\n\n![CleanShot 2025-08-02 at 06.41.28@2x.png](https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/26566824-95e7-47a3-8a6a-a45933894600/public)\n\n#### limitations\n\n- Uses Val Town Blob Storage with single key per feed: `rss_{slug}.xml`\n- Metadata stored as `meta_{slug}` with generation timestamps and post counts\n- Feeds are updated only on successful scrapes\n- Stale feeds are served indefinitely until next successful update",[],[371],"dd128792-96d6-11f0-8f32-0224a6c84d84",".vtignore","4ed78f4a-6f9e-11f0-b123-0224a6c84d84",123,["D",1758451002447],1,".git\n.vscode\n.cursorrules\n.DS_Store\nnode_modules\nvendor\n.claude/\n*-mcp/\n",[],[380],"83878450-6f96-11f0-a199-0224a6c84d84","utils.ts","2d2d68dc-6f95-11f0-a79e-0224a6c84d84","d57c3b06-c86c-4718-9ff3-9f221588c170",41,["D",1754135269076],"/**\n * Shared utilities that work in both frontend and backend environments\n */\n\n/**\n * Fetch with basic retry logic and user agent\n */\nexport async function fetchWithRetry(url: string, retries = 2): Promise {\n const headers = {\n \"user-agent\": \"ValTownRSS/1.0 (+https://val.town)\"\n };\n\n for (let i = 0; i <= retries; i++) {\n try {\n const response = await fetch(url, { headers });\n if (response.ok) {\n return response;\n }\n if (i === retries) {\n throw new Error(`HTTP ${response.status}: ${response.statusText}`);\n }\n } catch (error) {\n if (i === retries) {\n throw error;\n }\n // Wait before retry (exponential backoff)\n await new Promise(resolve => setTimeout(resolve, Math.pow(2, i) * 1000));\n }\n }\n throw new Error(\"Unexpected error in fetchWithRetry\");\n}\n\n/**\n * Safely extract text content from HTML elements\n */\nexport function safeText(text: string | undefined | null): string {\n return (text || \"\").trim().replace(/\\s+/g, \" \");\n}\n\n/**\n * Clean up blog post titles by removing author/date suffixes\n */\nexport function cleanTitle(title: string): string {\n if (!title) return \"\";\n \n // Remove repeated text patterns like \"Title Title Title\"\n let cleaned = title.replace(/(.+?)\\1+/, \"$1\");\n \n // Remove common author/date patterns at the end\n // Patterns like \"RishJun 13, 2025\" or \"NeynarAug 1, 2025\"\n cleaned = cleaned\n .replace(/([A-Z][a-z]+)([A-Z][a-z]{2}\\s+\\d{1,2},\\s+\\d{4})$/, \"\")\n .replace(/([A-Z][a-z]+)([A-Z][a-z]{2}\\s+\\d{1,2}\\s+\\d{4})$/, \"\")\n .trim();\n \n // If cleaning removed too much, return original\n if (cleaned.length < title.length * 0.3) {\n return title;\n }\n \n return cleaned || title;\n}\n\n/**\n * Convert relative URLs to absolute URLs\n */\nexport function makeAbsoluteUrl(url: string, baseUrl: string): string {\n if (!url) return \"\";\n if (url.startsWith(\"http\")) return url;\n if (url.startsWith(\"//\")) return `https:${url}`;\n \n // Normalize baseUrl to not end with slash\n const normalizedBase = baseUrl.endsWith(\"/\") ? baseUrl.slice(0, -1) : baseUrl;\n \n if (url.startsWith(\"/\")) {\n return normalizedBase + url;\n }\n \n // Handle relative paths like \"./blog/post\" or \"blog/post\"\n const cleanUrl = url.startsWith(\"./\") ? url.slice(2) : url;\n return `${normalizedBase}/${cleanUrl}`;\n}",[],[397,389],"shared","2d2d7048-6f95-11f0-a79e-0224a6c84d84",5,["D",1754134694714],[331],[397],["D",1758451702348],[],[18,122],["D",1758451702348],[],[18,113],["D",1754139827033],[],[18,103],["D",1754229274493],[],[18,192],["D",1754139813194],[326,327,328,329],[18],["D",1754133846902],{"_11":12,"_264":84},{"_11":12,"_260":-5,"_83":84,"_31":82,"_261":262,"_263":30},{"_53":195,"_13":16,"_47":50,"_252":219,"_253":-5,"_254":-5,"_255":-5,"_256":-5,"_257":-5,"_258":14,"_259":12},"ctx",{"_66":-5,"_283":455,"_456":457,"_458":459,"_460":30,"_461":30,"_462":30,"_463":24,"_464":-5,"_465":-7,"_466":-7,"_467":26,"_468":30,"_469":30,"_470":-5,"_471":30,"_472":30,"_473":30,"_474":-5},"ENV",{"_426":427,"_428":429,"_430":16,"_431":432,"_433":434,"_435":436,"_437":438,"_439":440,"_441":442,"_443":444,"_445":446,"_447":448,"_449":450,"_451":452,"_453":454},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

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