Echo

${escapeHtml(input)}

\n \n`,\n },\n {\n name: \"ini\",\n contentType: \"text/plain; charset=utf-8\",\n format: (input) =>\n `[echo]\nvalue=${input.replace(/\\r?\\n/g, \" \")}`,\n },\n {\n name: \"markdown\",\n contentType: \"text/markdown; charset=utf-8\",\n format: (input) =>\n `# Echo\n\n\\`\\`\\`\n${input}\n\\`\\`\\``,\n },\n {\n name: \"jsonlines\",\n contentType: \"application/json; charset=utf-8\",\n format: (input) =>\n `{\"echo\":${\n JSON.stringify(\n input,\n )\n }}\\n{\"length\":${input.length}}`,\n },\n {\n name: \"qrcode\",\n contentType: \"image/svg+xml; charset=utf-8\",\n format: async (input) => {\n const text = input || \"empty\";\n return await QRCode.toString(text, {\n type: \"svg\",\n margin: 1,\n errorCorrectionLevel: \"M\",\n });\n },\n },\n {\n name: \"barcode\",\n contentType: \"image/svg+xml; charset=utf-8\",\n format: (input) => makeFakeBarcodeSvg(input),\n },\n\n // --- Новые форматы ---\n\n // RSS feed\n {\n name: \"rss\",\n contentType: \"application/rss+xml; charset=utf-8\",\n format: (input) => {\n const now = new Date().toUTCString();\n return `\n\n \n Random Echo Feed\n https://val.town/\n Single-item RSS echo\n ${now}\n \n Echo item\n ${escapeXml(input)}\n ${now}\n ${\n escapeXml(\n \"echo-\" + Date.now().toString(),\n )\n }\n \n \n`;\n },\n },\n\n // E-mail формат (похож на RFC 822)\n {\n name: \"email\",\n contentType: \"text/plain; charset=utf-8\",\n format: (input) => {\n const date = new Date().toUTCString();\n const subject = truncate(input.replace(/\\r?\\n/g, \" \"), 60) ||\n \"Echo message\";\n return `From: \"Echo Service\" \nTo: \"You\" \nSubject: ${subject}\nDate: ${date}\nMIME-Version: 1.0\nContent-Type: text/plain; charset=utf-8\n\n${input}\n`;\n },\n },\n\n // ASCII-графика (рамка)\n {\n name: \"ascii\",\n contentType: \"text/plain; charset=utf-8\",\n format: (input) => makeAsciiBox(input),\n },\n\n // Base64 (просто base64-строка, без префикса)\n {\n name: \"base64\",\n contentType: \"text/plain; charset=utf-8\",\n format: (input) => toBase64(input),\n },\n];\n\nfunction pickRandom(arr: T[]): T {\n return arr[Math.floor(Math.random() * arr.length)];\n}\n\nasync function extractInput(req: Request): Promise {\n const url = new URL(req.url);\n const fromQuery = url.searchParams.get(\"q\") ?? url.searchParams.get(\"text\");\n if (fromQuery !== null) return fromQuery;\n\n const contentType = req.headers.get(\"content-type\") || \"\";\n\n if (contentType.includes(\"application/json\")) {\n try {\n const json = await req.json();\n if (typeof json === \"string\") return json;\n return JSON.stringify(json);\n } catch {\n // fall through to text\n }\n }\n\n const bodyText = await req.text();\n return bodyText;\n}\n\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n const rawInput = (await extractInput(req)) ?? \"\";\n const input = rawInput === \"\" ? \"(empty input)\" : rawInput;\n\n const requestedFormat = url.searchParams.get(\"format\") as\n | FormatName\n | null;\n\n const chosenFormat = formats.find((f) => f.name === requestedFormat) ??\n pickRandom(formats);\n\n const body = await chosenFormat.format(input);\n\n return new Response(body, {\n headers: {\n \"content-type\": chosenFormat.contentType,\n \"x-echo-format\": chosenFormat.name,\n },\n });\n}","deleted","label","format-roulette",[99],"permalink","https://www.val.town/x/karkarbI4/untitled-2884/code/main.ts","extension","actionData","errors"]