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Hi

\"\n});\n```\n\n## Val Town Utility Functions\n\nVal Town provides several utility functions to help with common project tasks.\n\n### Importing Utilities\n\nAlways import utilities with version pins to avoid breaking changes:\n\n```ts\nimport { parseProject, readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\n```\n\n### Available Utilities\n\n\n#### **serveFile** - Serve project files with proper content types\n\nFor example, in Hono:\n\n```ts\n// serve all files in frontend/ and shared/\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n```\n\n#### **readFile** - Read files from within the project:\n\n```ts\n// Read a file from the project\nconst fileContent = await readFile(\"/frontend/index.html\", import.meta.url);\n```\n\n#### **listFiles** - List all files in the project\n\n```ts\nconst files = await listFiles(import.meta.url);\n```\n\n#### **parseProject** - Extract information about the current project from import.meta.url\n\nThis is useful for including info for linking back to a val, ie in \"view source\" urls:\n\n```ts\nconst projectVal = parseProject(import.meta.url);\nconsole.log(projectVal.username); // Owner of the project\nconsole.log(projectVal.name); // Project name\nconsole.log(projectVal.version); // Version number\nconsole.log(projectVal.branch); // Branch name\nconsole.log(projectVal.links.self.project); // URL to the project page\n```\n\nHowever, it's *extremely importing* to note that `parseProject` and other Standard Library utilities ONLY RUN ON THE SERVER.\nIf you need access to this data on the client, run it in the server and pass it to the client by splicing it into the HTML page\nor by making an API request for it.\n\n## Val Town Platform Specifics\n\n- **Redirects:** Use `return new Response(null, { status: 302, headers: { Location: \"/place/to/redirect\" }})` instead of `Response.redirect` which is broken\n- **Images:** Avoid external images or base64 images. Use emojis, unicode symbols, or icon fonts/libraries instead\n- **AI Image:** To inline generate an AI image use: `

`\n- **Storage:** DO NOT use the Deno KV module for storage\n- **Browser APIs:** DO NOT use the `alert()`, `prompt()`, or `confirm()` methods\n- **Weather Data:** Use open-meteo for weather data (doesn't require API keys) unless otherwise specified\n- **View Source:** Add a view source link by importing & using `import.meta.url.replace(\"ems.sh\", \"val.town)\"` (or passing this data to the client) and include `target=\"_top\"` attribute\n- **Error Debugging:** Add `` to HTML to capture client-side errors\n- **Error Handling:** Only use try...catch when there's a clear local resolution; Avoid catches that merely log or return 500s. Let errors bubble up with full context\n- **Environment Variables:** Use `Deno.env.get('keyname')` when you need to, but generally prefer APIs that don't require keys\n- **Imports:** Use `https://esm.sh` for npm and Deno dependencies to ensure compatibility on server and browser\n- **Storage Strategy:** Only use backend storage if explicitly required; prefer simple static client-side sites\n- **React Configuration:** When using React libraries, pin versions with `?deps=react@18.2.0,react-dom@18.2.0` and start the file with `/** @jsxImportSource https://esm.sh/react@18.2.0 */`\n- Ensure all React dependencies and sub-dependencies are pinned to the same version\n- **Styling:** Default to using TailwindCSS via `` unless otherwise specified\n\n## Project Structure and Design Patterns\n\n### Recommended Directory Structure\n```\n├── backend/\n│ ├── database/\n│ │ ├── migrations.ts # Schema definitions\n│ │ ├── queries.ts # DB query functions\n│ │ └── README.md\n│ └── routes/ # Route modules\n│ ├── [route].ts\n│ └── static.ts # Static file serving\n│ ├── index.ts # Main entry point\n│ └── README.md\n├── frontend/\n│ ├── components/\n│ │ ├── App.tsx\n│ │ └── [Component].tsx\n│ ├── favicon.svg\n│ ├── index.html # Main HTML template\n│ ├── index.tsx # Frontend JS entry point\n│ ├── README.md\n│ └── style.css\n├── README.md\n└── shared/\n ├── README.md\n └── utils.ts # Shared types and functions\n```\n\n### Backend (Hono) Best Practices\n\n- Hono is the recommended API framework\n- Main entry point should be `backend/index.ts`\n- **Static asset serving:** Use the utility functions to read and serve project files:\n ```ts\n import { readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\n \n // serve all files in frontend/ and shared/\n app.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\n app.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n \n // For index.html, often you'll want to bootstrap with initial data\n app.get(\"/\", async c => {\n let html = await readFile(\"/frontend/index.html\", import.meta.url);\n \n // Inject data to avoid extra round-trips\n const initialData = await fetchInitialData();\n const dataScript = ``;\n \n html = html.replace(\"\", `${dataScript}`);\n return c.html(html);\n });\n ```\n- Create RESTful API routes for CRUD operations\n- Always include this snippet at the top-level Hono app to re-throwing errors to see full stack traces:\n ```ts\n // Unwrap Hono errors to see original error details\n app.onError((err, c) => {\n throw err;\n });\n ```\n\n### Database Patterns\n- Run migrations on startup or comment out for performance\n- Change table names when modifying schemas rather than altering\n- Export clear query functions with proper TypeScript typing\n\n## Common Gotchas and Solutions\n\n1. **Environment Limitations:** \n - Val Town runs on Deno in a serverless context, not Node.js\n - Code in `shared/` must work in both frontend and backend environments\n - Cannot use `Deno` keyword in shared code\n - Use `https://esm.sh` for imports that work in both environments\n\n2. **SQLite Peculiarities:**\n - Limited support for ALTER TABLE operations\n - Create new tables with updated schemas and copy data when needed\n - Always run table creation before querying\n\n3. **React Configuration:**\n - All React dependencies must be pinned to 18.2.0\n - Always include `@jsxImportSource https://esm.sh/react@18.2.0` at the top of React files\n - Rendering issues often come from mismatched React versions\n\n4. **File Handling:**\n - Val Town only supports text files, not binary\n - Use the provided utilities to read files across branches and forks\n - For files in the project, use `readFile` helpers\n\n5. **API Design:**\n - `fetch` handler is the entry point for HTTP vals\n - Run the Hono app with `export default app.fetch // This is the entry point for HTTP 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* RSS Poller - Cron trigger to poll RSS feed daily\n * This val runs on a schedule to check for new \"3-track\" posts\n */\n\nimport { initDatabase } from \"./database/schema.ts\";\nimport {\n addEpisode,\n isRssItemProcessed,\n markRssItemProcessed,\n} from \"./database/queries.ts\";\nimport type { Episode } from \"../shared/types.ts\";\n\nconst RSS_FEED_URL = \"https://nnnnnnnn.co/rss.xml\";\n\n/**\n * Parse RSS XML and extract items\n */\nfunction parseRSS(xmlText: string): any[] {\n const items: any[] = [];\n\n // Simple regex-based RSS parsing\n const itemRegex = /([\\s\\S]*?)<\\/item>/gi;\n const matches = xmlText.matchAll(itemRegex);\n\n for (const match of matches) {\n const itemXml = match[1];\n\n const title = itemXml.match(/(?:<!\\[CDATA\\[)?(.*?)(?:\\]\\]>)?<\\/title>/i)?.[1] || \"\";\n const link = itemXml.match(/<link>(.*?)<\\/link>/i)?.[1] || \"\";\n const pubDate = itemXml.match(/<pubDate>(.*?)<\\/pubDate>/i)?.[1] || \"\";\n const guid = itemXml.match(/<guid.*?>(.*?)<\\/guid>/i)?.[1] || \"\";\n\n // Try to get description from either <description> or <content:encoded>\n let description = itemXml.match(\n /<description>(?:<!\\[CDATA\\[)?([\\s\\S]*?)(?:\\]\\]>)?<\\/description>/i,\n )?.[1] || \"\";\n\n const contentEncoded = itemXml.match(\n /<content:encoded>(?:<!\\[CDATA\\[)?([\\s\\S]*?)(?:\\]\\]>)?<\\/content:encoded>/i,\n )?.[1];\n\n if (contentEncoded && contentEncoded.length > description.length) {\n description = contentEncoded;\n }\n\n // Extract enclosure URL (mp3 link)\n const enclosureMatch = itemXml.match(\n /<enclosure\\s+url=[\"']([^\"']+)[\"']/i,\n );\n const enclosureUrl = enclosureMatch?.[1] || \"\";\n\n // Also look for mp3 links in the content\n const mp3Links = description.match(/https?:\\/\\/[^\\s<>\"]+\\.mp3/gi) || [];\n\n items.push({\n title: title.trim(),\n link: link.trim(),\n pubDate: pubDate.trim(),\n guid: guid.trim() || link.trim(), // Use link as GUID fallback\n description: description.trim(),\n enclosureUrl: enclosureUrl.trim(),\n mp3Links,\n });\n }\n\n return items;\n}\n\n/**\n * Main cron function\n */\nexport default async function () {\n console.log(\"Starting RSS poll at\", new Date().toISOString());\n\n try {\n // Initialize database\n await initDatabase();\n\n // Fetch RSS feed\n const response = await fetch(RSS_FEED_URL);\n if (!response.ok) {\n throw new Error(`Failed to fetch RSS feed: ${response.statusText}`);\n }\n\n const xmlText = await response.text();\n const items = parseRSS(xmlText);\n\n console.log(`Found ${items.length} total items in RSS feed`);\n\n let newEpisodesCount = 0;\n\n // Process each item\n for (const item of items) {\n // Check if this is a \"3-track\" post\n const is3Track = item.title.toLowerCase().includes(\"3-track\") ||\n item.description.toLowerCase().includes(\"3-track\");\n\n if (!is3Track) {\n continue;\n }\n\n // Check if already processed\n if (await isRssItemProcessed(item.guid)) {\n console.log(`Already processed: ${item.title}`);\n continue;\n }\n\n // Find the mp3 URL\n let audioUrl = item.enclosureUrl;\n if (!audioUrl && item.mp3Links.length > 0) {\n audioUrl = item.mp3Links[0];\n }\n\n if (!audioUrl) {\n console.warn(`No audio URL found for: ${item.title}`);\n continue;\n }\n\n // Create episode object\n const episode: Episode = {\n source: \"rss\",\n title: item.title,\n audioUrl,\n pubDate: item.pubDate || new Date().toISOString(),\n description: item.description,\n guid: item.guid,\n };\n\n // Add to database\n await addEpisode(episode);\n await markRssItemProcessed(item.guid);\n\n newEpisodesCount++;\n console.log(`Added new episode: ${item.title}`);\n }\n\n console.log(`RSS poll complete. Added ${newEpisodesCount} new episodes.`);\n } catch (error) {\n console.error(\"Error in RSS poller:\", error);\n throw error;\n }\n}\n",[],[152,196],"4d7ba492-bbb1-11f0-93d2-42dde27851f2","feed-generator.ts",9,["D",1762503063198],"/**\n * Podcast Feed Generator - HTTP trigger to serve aggregated RSS feed\n * This val serves a standard podcast RSS feed with all aggregated episodes\n */\n\nimport { initDatabase } from \"./database/schema.ts\";\nimport { getAllEpisodes } from \"./database/queries.ts\";\nimport type { Episode } from \"../shared/types.ts\";\n\n/**\n * Escape XML special characters\n */\nfunction escapeXml(unsafe: string): string {\n return unsafe\n .replace(/&/g, \"&\")\n .replace(/</g, \"<\")\n .replace(/>/g, \">\")\n .replace(/\"/g, \""\")\n .replace(/'/g, \"'\");\n}\n\n/**\n * Convert ISO date to RFC 822 format (required for RSS)\n */\nfunction toRFC822(isoDate: string): string {\n try {\n const date = new Date(isoDate);\n return date.toUTCString();\n } catch {\n return new Date().toUTCString();\n }\n}\n\n/**\n * Generate podcast RSS feed XML\n */\nfunction generateRSSFeed(episodes: Episode[], baseUrl: string): string {\n const now = new Date().toUTCString();\n\n const episodeItems = episodes\n .map(\n (episode) => `\n <item>\n <title>${escapeXml(episode.title)}\n \n ${escapeXml(episode.audioUrl)}\n ${escapeXml(episode.guid)}\n ${toRFC822(episode.pubDate)}\n \n Podcast Aggregator\n \n `,\n )\n .join(\"\\n\");\n\n return `\n\n \n Aggregated Podcast Feed\n A curated feed of audio content from multiple sources\n ${escapeXml(baseUrl)}\n en-us\n ${now}\n ${now}\n Podcast Aggregator\n A curated feed of audio content from multiple sources including emails and RSS feeds\n \n Podcast Aggregator\n \n no\n \n${episodeItems}\n \n`;\n}\n\n/**\n * Main HTTP handler\n */\nexport default async function (req: Request): Promise {\n try {\n // Initialize database\n await initDatabase();\n\n // Get all episodes\n const episodes = await getAllEpisodes();\n\n // Get base URL from request\n const url = new URL(req.url);\n const baseUrl = `${url.protocol}//${url.host}`;\n\n // Generate RSS feed\n const rssFeed = generateRSSFeed(episodes, baseUrl);\n\n // Return RSS feed with proper content type\n return new Response(rssFeed, {\n headers: {\n \"Content-Type\": \"application/rss+xml; charset=utf-8\",\n \"Cache-Control\": \"public, max-age=300\", // Cache for 5 minutes\n },\n });\n } catch (error) {\n console.error(\"Error generating feed:\", error);\n return new Response(`Error generating feed: ${error.message}`, {\n status: 500,\n headers: { \"Content-Type\": \"text/plain\" },\n });\n }\n}\n",[],[152,205],"4d597854-bbb1-11f0-93d2-42dde27851f2","email-handler.ts","4d59791c-bbb1-11f0-93d2-42dde27851f2",8,["D",1762503062818],"email","/**\n * Email Handler - Email trigger to process incoming emails\n * This val receives emails and extracts audio attachments\n */\n\nimport { initDatabase } from \"./database/schema.ts\";\nimport { addEpisode, episodeExists } from \"./database/queries.ts\";\nimport type { Episode } from \"../shared/types.ts\";\n\ninterface Email {\n from: string;\n to: string;\n subject: string;\n text?: string;\n html?: string;\n attachments?: Array<{\n filename: string;\n contentType: string;\n size: number;\n url: string;\n }>;\n date?: string;\n messageId?: string;\n}\n\n/**\n * Extract text content from email\n */\nfunction getEmailContent(email: Email): string {\n if (email.text) {\n return email.text;\n }\n if (email.html) {\n // Basic HTML to text conversion - strip tags\n return email.html\n .replace(/]*>[\\s\\S]*?<\\/style>/gi, \"\")\n .replace(/]*>[\\s\\S]*?<\\/script>/gi, \"\")\n .replace(/<[^>]+>/g, \" \")\n .replace(/\\s+/g, \" \")\n .trim();\n }\n return \"\";\n}\n\n/**\n * Main email handler function\n */\nexport default async function (email: Email) {\n console.log(\"Received email:\", {\n from: email.from,\n subject: email.subject,\n attachmentCount: email.attachments?.length || 0,\n });\n\n try {\n // Initialize database\n await initDatabase();\n\n // Check if email has audio attachments\n const audioAttachments = email.attachments?.filter(\n (att) =>\n att.contentType.startsWith(\"audio/\") ||\n att.filename.match(/\\.(mp3|m4a|wav|ogg|aac|flac)$/i),\n ) || [];\n\n if (audioAttachments.length === 0) {\n console.log(\"No audio attachments found in email\");\n return;\n }\n\n // Process each audio attachment\n for (const attachment of audioAttachments) {\n // Create a unique GUID for this episode\n const guid = email.messageId\n ? `email:${email.messageId}:${attachment.filename}`\n : `email:${Date.now()}:${attachment.filename}`;\n\n // Check if this episode already exists\n if (await episodeExists(guid)) {\n console.log(`Episode already exists: ${guid}`);\n continue;\n }\n\n // Extract email content for description\n const description = getEmailContent(email);\n\n // Create episode object\n const episode: Episode = {\n source: \"email\",\n title: email.subject || `Audio from ${email.from}`,\n audioUrl: attachment.url,\n pubDate: email.date || new Date().toISOString(),\n description: description || \"No description provided\",\n guid,\n };\n\n // Add to database\n await addEpisode(episode);\n\n console.log(`Added new episode from email: ${episode.title}`);\n }\n\n console.log(\n `Email processing complete. Added ${audioAttachments.length} episodes.`,\n );\n } catch (error) {\n console.error(\"Error processing email:\", error);\n throw error;\n }\n}\n",[],[152,212],"4d4ad39e-bbb1-11f0-830f-42dde27851f2","schema.ts","4d4ad5f6-bbb1-11f0-830f-42dde27851f2","4d104986-bbb1-11f0-82a8-42dde27851f2",7,["D",1762503062831],"import { sqlite } from \"https://esm.town/v/stevekrouse/sqlite\";\n\nconst EPISODES_TABLE = \"episodes\";\nconst PROCESSED_RSS_TABLE = \"processed_rss_items\";\n\n/**\n * Initialize database tables\n * Run this once on startup or when schema changes\n */\nexport async function initDatabase() {\n // Create episodes table\n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS ${EPISODES_TABLE} (\n id INTEGER PRIMARY KEY AUTOINCREMENT,\n source TEXT NOT NULL,\n title TEXT NOT NULL,\n audio_url TEXT NOT NULL,\n pub_date TEXT NOT NULL,\n description TEXT,\n guid TEXT UNIQUE NOT NULL,\n created_at TEXT NOT NULL\n )\n `);\n\n // Create index on guid for faster lookups\n await sqlite.execute(`\n CREATE INDEX IF NOT EXISTS idx_episodes_guid\n ON ${EPISODES_TABLE}(guid)\n `);\n\n // Create index on pub_date for sorting\n await sqlite.execute(`\n CREATE INDEX IF NOT EXISTS idx_episodes_pub_date\n ON ${EPISODES_TABLE}(pub_date DESC)\n `);\n\n // Create processed RSS items table\n await sqlite.execute(`\n CREATE TABLE IF NOT EXISTS ${PROCESSED_RSS_TABLE} (\n guid TEXT PRIMARY KEY,\n processed_at TEXT NOT NULL\n )\n `);\n}\n\nexport { EPISODES_TABLE, PROCESSED_RSS_TABLE };\n",[],[152,229,221],"database","4d452548-bbb1-11f0-9e28-42dde27851f2","queries.ts","4d452610-bbb1-11f0-9e28-42dde27851f2",6,["D",1762503062830],"import { sqlite } from \"https://esm.town/v/stevekrouse/sqlite\";\nimport type { Episode, ProcessedRssItem } from \"../../shared/types.ts\";\nimport { EPISODES_TABLE, PROCESSED_RSS_TABLE } from \"./schema.ts\";\n\n/**\n * Add a new episode to the database\n */\nexport async function addEpisode(episode: Episode): Promise {\n const now = new Date().toISOString();\n\n await sqlite.execute(\n `INSERT INTO ${EPISODES_TABLE}\n (source, title, audio_url, pub_date, description, guid, created_at)\n VALUES (?, ?, ?, ?, ?, ?, ?)`,\n [\n episode.source,\n episode.title,\n episode.audioUrl,\n episode.pubDate,\n episode.description,\n episode.guid,\n now,\n ],\n );\n}\n\n/**\n * Get all episodes sorted by publication date (newest first)\n */\nexport async function getAllEpisodes(): Promise {\n const result = await sqlite.execute(\n `SELECT id, source, title, audio_url as audioUrl, pub_date as pubDate,\n description, guid, created_at as createdAt\n FROM ${EPISODES_TABLE}\n ORDER BY pub_date DESC`,\n );\n\n return result.rows as Episode[];\n}\n\n/**\n * Check if an RSS item has already been processed\n */\nexport async function isRssItemProcessed(guid: string): Promise {\n const result = await sqlite.execute(\n `SELECT guid FROM ${PROCESSED_RSS_TABLE} WHERE guid = ?`,\n [guid],\n );\n\n return result.rows.length > 0;\n}\n\n/**\n * Mark an RSS item as processed\n */\nexport async function markRssItemProcessed(guid: string): Promise {\n const now = new Date().toISOString();\n\n await sqlite.execute(\n `INSERT OR IGNORE INTO ${PROCESSED_RSS_TABLE} (guid, processed_at)\n VALUES (?, ?)`,\n [guid, now],\n );\n}\n\n/**\n * Check if an episode with the given GUID exists\n */\nexport async function episodeExists(guid: string): Promise {\n const result = await sqlite.execute(\n `SELECT guid FROM ${EPISODES_TABLE} WHERE guid = ?`,\n [guid],\n );\n\n return result.rows.length > 0;\n}\n",[],[152,229,231],"4d1048dc-bbb1-11f0-82a8-42dde27851f2",4,["D",1762503062492],[177,178],[152,229],["D",1762503061835],[176,179,180,181],[152],"4d41586e-bbb1-11f0-82a8-42dde27851f2","settings.local.json","4d415936-bbb1-11f0-82a8-42dde27851f2",5,["D",1762503062814],"{\n \"permissions\": {\n \"allow\": [\n \"Bash(tree:*)\"\n ],\n \"deny\": [],\n \"ask\": []\n }\n}\n",[],[158,247],["D",1762503060988],[174],[158],["D",1762501462497],["D",1789542098478],{"_97":96,"_104":100},{"_97":96,"_98":-5,"_99":100,"_18":52,"_101":102,"_103":24},{"_13":86,"_31":87,"_40":39,"_88":41,"_89":-5,"_90":-5,"_91":-5,"_92":-5,"_93":-5,"_94":42,"_95":96},"ctx",{"_79":-5,"_123":295,"_296":297,"_298":299,"_300":24,"_301":24,"_302":24,"_303":56,"_304":-5,"_305":-7,"_306":-7,"_307":60,"_308":24,"_309":24,"_310":-5,"_311":24,"_312":24,"_313":24,"_314":-5},"ENV",{"_266":267,"_268":269,"_270":87,"_271":272,"_273":274,"_275":276,"_277":278,"_279":280,"_281":282,"_283":284,"_285":286,"_287":288,"_289":290,"_291":292,"_293":294},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","811aa22498c9b0b5a47e8d778de579cdb990f332","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"]

Diff · v12