Markdown Links Resolver

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_163":164,"_165":166},"routes/_app.x.$handle.$name",{"_95":94,"_32":45,"_103":85,"_27":104,"_13":14,"_105":-5,"_11":106,"_107":108,"_109":110,"_111":112,"_113":114,"_20":-5,"_115":-5,"_116":-5,"_117":25,"_118":119,"_120":49,"_121":-5,"_122":-5,"_123":124},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_43":44,"_32":45,"_38":46,"_47":-5,"_48":49,"_50":51,"_52":51,"_53":-5,"_54":-5,"_18":55,"_56":31,"_57":49,"_58":-5,"_59":-5,"_60":61,"_62":63,"_64":-5,"_65":-5,"_66":-5,"_67":-5,"_68":69,"_70":69,"_71":72,"_73":72,"_74":72,"_75":69,"_76":69,"_77":78,"_79":80,"_81":82,"_83":25},"version",2,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":28,"_33":34,"_35":37,"_38":39,"_40":14,"_41":42,"_24":25},"previous",{"_30":31,"_32":28,"_33":34,"_35":36},"deleted",false,"deletedHere","path","main.tsx","latestPath","fileId","c6719c7a-2756-11f0-86ff-569c3dd06744","name","fileType","http","content","export default async function (req: Request): Promise {\n return Response.json({ ok: true })\n}","import { createApp, h, nextTick, onMounted, ref } from \"https://esm.sh/vue@3.4.21\";\n\nfunction App() {\n const markdown = ref(\"\");\n const processedMarkdown = ref(\"\");\n const copyButtonText = ref(\"Copy to Clipboard\");\n const outputRef = ref(null);\n const textareaRef = ref(null);\n const isAutoProcessing = ref(false);\n\n onMounted(() => {\n // Autofocus textarea when component mounts\n if (textareaRef.value) {\n textareaRef.value.focus();\n }\n });\n\n const processMarkdown = async () => {\n try {\n isAutoProcessing.value = true;\n const response = await fetch(\"/resolve-links\", {\n method: \"POST\",\n headers: {\n \"Content-Type\": \"application/json\",\n },\n body: JSON.stringify({ markdown: markdown.value }),\n });\n\n if (!response.ok) {\n throw new Error(\"Failed to resolve links\");\n }\n\n const { processedText } = await response.json();\n processedMarkdown.value = processedText;\n } catch (error) {\n console.error(\"Error processing markdown:\", error);\n alert(\"Failed to resolve links. Please try again.\");\n } finally {\n isAutoProcessing.value = false;\n }\n };\n\n const handlePaste = async (event: ClipboardEvent) => {\n // Ensure the paste event is captured\n await nextTick();\n\n // Explicitly get the pasted text\n const pastedText = event.clipboardData?.getData(\"text/plain\") || \"\";\n\n // Update markdown and trigger processing\n markdown.value = pastedText;\n\n // Only auto-process if there's content\n if (pastedText.trim()) {\n await processMarkdown();\n }\n };\n\n const copyToClipboard = async () => {\n try {\n // Wait for next tick to ensure ref is updated\n await nextTick();\n\n // Use a more reliable method to get text content\n const textToCopy = processedMarkdown.value;\n\n if (textToCopy) {\n await navigator.clipboard.writeText(textToCopy);\n copyButtonText.value = \"Copied\";\n setTimeout(() => {\n copyButtonText.value = \"Copy to Clipboard\";\n }, 2000);\n }\n } catch (err) {\n console.error(\"Failed to copy:\", err);\n }\n };\n\n return {\n markdown,\n processedMarkdown,\n copyButtonText,\n outputRef,\n textareaRef,\n isAutoProcessing,\n processMarkdown,\n copyToClipboard,\n handlePaste,\n };\n}\n\nfunction client() {\n const RootComponent = {\n setup() {\n const appData = App();\n\n return () =>\n h(\"div\", {\n style: {\n display: \"flex\",\n flexDirection: \"column\",\n height: \"100%\",\n maxWidth: \"1300px\",\n margin: \"auto\",\n padding: \"20px\",\n gap: \"10px\",\n boxSizing: \"border-box\",\n },\n class: \"app-container\",\n }, [\n h(\"h1\", {\n style: {\n textAlign: \"center\",\n margin: 0,\n fontWeight: 300,\n },\n }, \"Markdown Links Resolver\"),\n\n h(\"div\", {\n class: \"content-container\",\n }, [\n // Input Column\n h(\"div\", {\n style: {\n display: \"flex\",\n flexDirection: \"column\",\n width: \"50%\",\n gap: \"10px\",\n },\n class: \"input-column\",\n }, [\n h(\"textarea\", {\n ref: (el) => {\n appData.textareaRef.value = el;\n },\n value: appData.markdown.value,\n onInput: (e) => {\n appData.markdown.value = e.target.value;\n },\n onPaste: appData.handlePaste,\n placeholder: \"Paste your markdown with links here\",\n style: {\n flexGrow: 1,\n resize: \"none\",\n padding: \"10px\",\n borderRadius: \"5px\",\n border: \"1px solid #ccc\",\n lineHeight: 1.3,\n overflowY: \"auto\",\n height: \"100%\",\n fontFamily: \"inherit\",\n fontSize: \"14px\",\n },\n }),\n h(\"button\", {\n onClick: appData.processMarkdown,\n style: {\n padding: \"10px\",\n backgroundColor: \"#4CAF50\",\n color: \"white\",\n border: \"none\",\n borderRadius: \"5px\",\n fontWeight: \"bold\",\n opacity: appData.isAutoProcessing.value ? 0.5 : 1,\n cursor: appData.isAutoProcessing.value ? \"default\" : \"pointer\",\n },\n }, appData.isAutoProcessing.value ? \"Processing ...\" : \"Resolve Links\"),\n ]),\n\n // Output Column\n h(\"div\", {\n style: {\n display: \"flex\",\n flexDirection: \"column\",\n width: \"50%\",\n gap: \"10px\",\n },\n class: \"output-column\",\n }, [\n h(\"textarea\", {\n ref: (el) => {\n appData.outputRef.value = el;\n },\n readonly: true,\n value: appData.processedMarkdown.value,\n placeholder: \"Processed markdown will appear here\",\n style: {\n flexGrow: 1,\n resize: \"none\",\n padding: \"10px\",\n borderRadius: \"5px\",\n border: \"1px solid #ccc\",\n lineHeight: 1.3,\n overflowY: \"auto\",\n height: \"100%\",\n fontFamily: \"inherit\",\n fontSize: \"14px\",\n backgroundColor: \"#f4f4f4\",\n ...(appData.processedMarkdown.value ? {} : { opacity: 0.5 }),\n },\n }),\n\n h(\"button\", {\n onClick: appData.copyToClipboard,\n disabled: !appData.processedMarkdown.value,\n style: {\n padding: \"10px\",\n backgroundColor: \"#2196F3\",\n color: \"white\",\n border: \"none\",\n borderRadius: \"5px\",\n cursor: appData.processedMarkdown.value ? \"pointer\" : \"default\",\n fontWeight: \"bold\",\n opacity: appData.processedMarkdown.value ? 1 : 0.5,\n },\n }, appData.copyButtonText.value),\n ]),\n ]),\n\n h(\"a\", {\n href: import.meta.url.replace(\"esm.town\", \"val.town\"),\n target: \"_top\",\n style: {\n textAlign: \"center\",\n color: \"#777\",\n textDecoration: \"none\",\n marginTop: \"10px\",\n },\n }, \"View Source\"),\n ]);\n },\n };\n\n const app = createApp(RootComponent);\n app.mount(\"#root\");\n}\n\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request): Promise {\n // Handle link resolution endpoint\n if (request.method === \"POST\" && new URL(request.url).pathname === \"/resolve-links\") {\n try {\n const { markdown } = await request.json();\n\n // Combine multiple link extraction methods\n const linkRegexes = [\n // Markdown links\n /\\[([^\\]]+)\\]\$([^)]+)\$/g,\n // Plain URLs\n /(https?:\\/\\/[^\\s]+)/g,\n ];\n\n const links: Array<{ original: string; href: string }> = [];\n\n linkRegexes.forEach(regex => {\n let match;\n while ((match = regex.exec(markdown)) !== null) {\n links.push({\n original: match[0],\n href: match[2] || match[1], // Support both markdown and plain URL formats\n });\n }\n });\n\n // Resolve each link\n const resolvedLinks = await Promise.all(\n links.map(async (link) => {\n const resolvedHref = await resolveRedirect(link.href);\n return {\n original: link.original,\n resolvedHref,\n };\n }),\n );\n\n // Replace links in markdown\n let processedText = markdown;\n resolvedLinks.forEach(({ original, resolvedHref }) => {\n // Escape special regex characters\n const escapedOriginal = original.replace(/[.*+?^${}()|[\\]\\\\]/g, \"\\\\$&\");\n\n // Replace the link, supporting both markdown and plain URL formats\n processedText = processedText.replace(\n new RegExp(escapedOriginal, \"g\"),\n original.includes(\"](\")\n ? original.replace(original.split(\"(\")[1].split(\")\")[0], resolvedHref)\n : resolvedHref,\n );\n });\n\n return new Response(JSON.stringify({ processedText }), {\n headers: { \"Content-Type\": \"application/json\" },\n });\n } catch (error) {\n return new Response(JSON.stringify({ error: error.message }), {\n status: 500,\n headers: { \"Content-Type\": \"application/json\" },\n });\n }\n }\n\n // Serve the main HTML\n return new Response(\n `\n \n \n Markdown Links Resolver\n \n 🔗\">\n \n \n \n

\n \n \n \n \n `,\n {\n headers: { \"content-type\": \"text/html\" },\n },\n );\n}\n\nasync function resolveRedirect(url: string): Promise {\n try {\n // Try multiple methods to resolve redirects\n try {\n // Method 1: Fetch with manual redirect handling\n const response = await fetch(url, {\n method: \"HEAD\",\n redirect: \"manual\",\n headers: {\n \"User-Agent\":\n \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36\",\n },\n });\n\n // Check for redirect status codes\n if ([301, 302, 303, 307, 308].includes(response.status)) {\n const redirectUrl = response.headers.get(\"location\");\n return redirectUrl || url;\n }\n } catch {}\n\n // Method 2: Full GET request for stubborn redirects\n try {\n const fullResponse = await fetch(url, {\n method: \"GET\",\n redirect: \"follow\",\n headers: {\n \"User-Agent\":\n \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36\",\n },\n });\n\n // Return the final URL after all redirects\n return fullResponse.url || url;\n } catch {}\n\n // Fallback\n return url;\n } catch {\n return url;\n 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Diff · v2