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charset=utf-8\",\n \"Cache-Control\": \"public, max-age=300\",\n };\n}\n\nfunction json(data: unknown, status = 200) {\n return new Response(JSON.stringify(data, null, 2), {\n status,\n headers: corsHeaders(),\n });\n}\n\nfunction normalizeHandle(handle: string) {\n const raw = handle.trim().replace(/^@+/, \"\");\n return raw ? `@${raw}` : \"\";\n}\n\nfunction titleCaseHandle(handle: string) {\n return handle\n .replace(/[-_]+/g, \" \")\n .replace(/\\b\\w/g, (char) => char.toUpperCase());\n}\n\nfunction safePathnameFirstSegment(rawUrl: string) {\n try {\n const url = new URL(rawUrl);\n return url.pathname.split(\"/\").filter(Boolean)[0] || \"\";\n } catch {\n return \"\";\n }\n}\n\nfunction parseTweetUrl(raw: string):\n | { ok: true; username: string; statusId: string; normalizedUrl: string }\n | { ok: false; reason: string } {\n try {\n const candidate = raw.startsWith(\"http\") ? raw : `https://${raw}`;\n const url = new URL(candidate);\n const host = url.hostname.replace(/^www\\./, \"\");\n\n if (![\"x.com\", \"twitter.com\"].includes(host)) {\n return {\n ok: false,\n reason: \"Only x.com and twitter.com URLs are supported.\",\n };\n }\n\n const match = url.pathname.match(/^\\/([^/]+)\\/status\\/(\\d+)/i);\n if (!match) {\n return { ok: false, reason: \"Could not find a valid status URL.\" };\n }\n\n const [, username, statusId] = match;\n return {\n ok: true,\n username,\n statusId,\n normalizedUrl: `https://x.com/${username}/status/${statusId}`,\n };\n } catch {\n return { ok: false, reason: \"Invalid URL.\" };\n }\n}\n\nfunction extractTweetTextFromHtml(html: string) {\n if (!html) return \"\";\n\n const doc = new DOMParser().parseFromString(html, \"text/html\");\n const tweetParagraph = doc.querySelector(\"blockquote.twitter-tweet p\") ||\n doc.querySelector(\"p\");\n\n const rawText = tweetParagraph?.textContent || \"\";\n return rawText.replace(/https:\\/\\/t\\.co\\/\\S+/g, \"\").replace(/\\s+/g, \" \")\n .trim();\n}\n\nfunction extractTimestampFromHtml(html: string) {\n if (!html) return \"\";\n\n const doc = new DOMParser().parseFromString(html, \"text/html\");\n const links = Array.from(doc.querySelectorAll(\"a\"));\n const statusLink = links.find((link) =>\n /\\/status\\/\\d+/.test(link.getAttribute(\"href\") || \"\")\n );\n\n return statusLink?.textContent?.trim() || \"\";\n}\n\nasync function getAvatarDataUrl(username: string): Promise {\n const candidates = [\n `https://unavatar.io/x/${encodeURIComponent(username)}`,\n `https://unavatar.io/twitter/${encodeURIComponent(username)}`,\n ];\n\n for (const url of candidates) {\n const dataUrl = await fetchAsDataUrl(url);\n if (dataUrl) return dataUrl;\n }\n\n return makeFallbackAvatar(username);\n}\n\nasync function fetchAsDataUrl(url: string): Promise {\n try {\n const res = await fetch(url, {\n headers: {\n \"User-Agent\": \"XPressFrameLab/1.0\",\n \"Accept\": \"image/*,*/*\",\n },\n redirect: \"follow\",\n });\n\n if (!res.ok) return \"\";\n\n const contentType = res.headers.get(\"content-type\") || \"\";\n if (!contentType.startsWith(\"image/\")) return \"\";\n\n const bytes = new Uint8Array(await res.arrayBuffer());\n const base64 = toBase64(bytes);\n return `data:${contentType};base64,${base64}`;\n } catch {\n return \"\";\n }\n}\n\nfunction makeFallbackAvatar(username: string): string {\n const safe = (username || \"x\").trim().slice(0, 2).toUpperCase();\n const svg = `\n\n `.trim();\n\n return `data:image/svg+xml;base64,${btoa(svg)}`;\n}\n\nfunction toBase64(bytes: Uint8Array): string {\n let binary = \"\";\n const chunkSize = 0x8000;\n\n for (let i = 0; i < bytes.length; i += chunkSize) {\n binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));\n }\n\n return btoa(binary);\n}","export default async function main(req: Request): Promise {\n if (req.method === \"OPTIONS\") {\n return new Response(null, {\n status: 204,\n headers: corsHeaders(),\n });\n }\n\n try {\n const requestUrl = new URL(req.url);\n const postUrl = requestUrl.searchParams.get(\"url\")?.trim();\n\n if (!postUrl) {\n return json(\n {\n ok: false,\n error: \"Missing `url` query param.\",\n example:\n \"https://your-val.web.val.run?url=https://x.com/buildwithkrunal/status/1909654321234567890\",\n },\n 400,\n );\n }\n\n const parsed = parseTweetUrl(postUrl);\n if (!parsed.ok) {\n return json(\n {\n ok: false,\n error: parsed.reason,\n },\n 400,\n );\n }\n\n const oembedUrl =\n `https://publish.twitter.com/oembed?omit_script=1&dnt=true&url=${\n encodeURIComponent(parsed.normalizedUrl)\n }`;\n\n const oembedRes = await fetch(oembedUrl, {\n headers: {\n \"User-Agent\": \"XPressFrameLab/1.0\",\n \"Accept\": \"application/json\",\n },\n });\n\n if (!oembedRes.ok) {\n return json(\n {\n ok: false,\n error: `oEmbed request failed with status ${oembedRes.status}`,\n },\n 502,\n );\n }\n\n const oembed = await oembedRes.json();\n\n const authorName = oembed.author_name || titleCaseHandle(parsed.username);\n const authorHandle = oembed.author_url\n ? normalizeHandle(\n safePathnameFirstSegment(oembed.author_url) || parsed.username,\n )\n : `@${parsed.username}`;\n\n const tweetText = extractTweetTextFromHtml(oembed.html || \"\");\n const timestamp = extractTimestampFromHtml(oembed.html || \"\");\n const sourceBadge = `x.com / ${parsed.username}`;\n const avatarDataUrl = await getAvatarDataUrl(parsed.username);\n\n return json({\n ok: true,\n sourceUrl: parsed.normalizedUrl,\n username: parsed.username,\n statusId: parsed.statusId,\n authorName,\n authorHandle,\n tweetText,\n timestamp,\n sourceBadge,\n avatarDataUrl,\n });\n } catch (error) {\n return json(\n {\n ok: false,\n error: error instanceof Error ? error.message : \"Unknown error\",\n },\n 500,\n );\n }\n}\n\nfunction corsHeaders() {\n return {\n \"Access-Control-Allow-Origin\": \"*\",\n \"Access-Control-Allow-Methods\": \"GET, OPTIONS\",\n \"Access-Control-Allow-Headers\": \"Content-Type\",\n \"Content-Type\": \"application/json; charset=utf-8\",\n \"Cache-Control\": \"public, max-age=300\",\n };\n}\n\nfunction json(data: unknown, status = 200) {\n return new Response(JSON.stringify(data, null, 2), {\n status,\n headers: corsHeaders(),\n });\n}\n\nfunction normalizeHandle(handle: string) {\n const raw = handle.trim().replace(/^@+/, \"\");\n return raw ? `@${raw}` : \"\";\n}\n\nfunction titleCaseHandle(handle: string) {\n return handle\n .replace(/[-_]+/g, \" \")\n .replace(/\\b\\w/g, (char) => char.toUpperCase());\n}\n\nfunction safePathnameFirstSegment(rawUrl: string) {\n try {\n const url = new URL(rawUrl);\n return url.pathname.split(\"/\").filter(Boolean)[0] || \"\";\n } catch {\n return \"\";\n }\n}\n\nfunction parseTweetUrl(raw: string):\n | { ok: true; username: string; statusId: string; normalizedUrl: string }\n | { ok: false; reason: string } {\n try {\n const candidate = raw.startsWith(\"http\") ? raw : `https://${raw}`;\n const url = new URL(candidate);\n const host = url.hostname.replace(/^www\\./, \"\");\n\n if (![\"x.com\", \"twitter.com\"].includes(host)) {\n return {\n ok: false,\n reason: \"Only x.com and twitter.com URLs are supported.\",\n };\n }\n\n const match = url.pathname.match(/^\\/([^/]+)\\/status\\/(\\d+)/i);\n if (!match) {\n return { ok: false, reason: \"Could not find a valid status URL.\" };\n }\n\n const [, username, statusId] = match;\n return {\n ok: true,\n username,\n statusId,\n normalizedUrl: `https://x.com/${username}/status/${statusId}`,\n };\n } catch {\n return { ok: false, reason: \"Invalid URL.\" };\n }\n}\n\nfunction decodeHtmlEntities(input: string): string {\n return input\n .replace(/&/g, \"&\")\n .replace(/</g, \"<\")\n .replace(/>/g, \">\")\n .replace(/"/g, '\"')\n .replace(/'/g, \"'\")\n .replace(///g, \"/\");\n}\n\nfunction stripTags(input: string): string {\n return input.replace(/<[^>]*>/g, \" \");\n}\n\nfunction extractTweetTextFromHtml(html: string): string {\n if (!html) return \"\";\n\n const paragraphMatch = html.match(/]*>([\\s\\S]*?)<\\/p>/i) ||\n html.match(/]*>([\\s\\S]*?)<\\/blockquote>/i);\n\n const raw = paragraphMatch?.[1] || \"\";\n const withoutLinks = raw.replace(/]*>[\\s\\S]*?<\\/a>/gi, \" \");\n const text = stripTags(withoutLinks);\n return decodeHtmlEntities(text)\n .replace(/https:\\/\\/t\\.co\\/\\S+/g, \"\")\n .replace(/\\s+/g, \" \")\n .trim();\n}\n\nfunction extractTimestampFromHtml(html: string): string {\n if (!html) return \"\";\n\n const anchorMatches = Array.from(\n html.matchAll(/]*href=\"([^\"]+)\"[^>]*>([\\s\\S]*?)<\\/a>/gi),\n );\n\n for (const match of anchorMatches) {\n const href = match[1] || \"\";\n const label = decodeHtmlEntities(stripTags(match[2] || \"\")).trim();\n if (/\\/status\\/\\d+/.test(href) && label) {\n return label;\n }\n }\n\n return \"\";\n}\n\nasync function getAvatarDataUrl(username: string): Promise {\n const candidates = [\n `https://unavatar.io/x/${encodeURIComponent(username)}`,\n `https://unavatar.io/twitter/${encodeURIComponent(username)}`,\n ];\n\n for (const url of candidates) {\n const dataUrl = await fetchAsDataUrl(url);\n if (dataUrl) return dataUrl;\n }\n\n return makeFallbackAvatar(username);\n}\n\nasync function fetchAsDataUrl(url: string): Promise {\n try {\n const res = await fetch(url, {\n headers: {\n \"User-Agent\": \"XPressFrameLab/1.0\",\n \"Accept\": \"image/*,*/*\",\n },\n redirect: \"follow\",\n });\n\n if (!res.ok) return \"\";\n\n const contentType = res.headers.get(\"content-type\") || \"\";\n if (!contentType.startsWith(\"image/\")) return \"\";\n\n const bytes = new Uint8Array(await res.arrayBuffer());\n const base64 = toBase64(bytes);\n return `data:${contentType};base64,${base64}`;\n } catch {\n return \"\";\n }\n}\n\nfunction makeFallbackAvatar(username: string): string {\n const safe = (username || \"x\").trim().slice(0, 2).toUpperCase();\n const svg = `\n\n `.trim();\n\n return `data:image/svg+xml;base64,${btoa(svg)}`;\n}\n\nfunction toBase64(bytes: Uint8Array): string {\n let binary = \"\";\n const chunkSize = 0x8000;\n\n for (let i = 0; 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Diff · v6