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import ogs from "open-graph-scraper"
export const runtime = "nodejs"
interface OGResponse {
title: string
description: string
image?: string
}
function isValidUrl(urlString: string): boolean {
try {
const url = new URL(urlString)
return url.protocol === "http:" || url.protocol === "https:"
} catch {
return false
}
}
function isPrivateHost(hostname: string): boolean {
const lowerHost = hostname.toLowerCase()
// Block localhost variants
if (
lowerHost === "localhost" ||
lowerHost === "127.0.0.1" ||
lowerHost === "::1" ||
lowerHost.startsWith("127.") ||
lowerHost.startsWith("0.0.0.0")
) {
return true
}
// Block RFC 1918 private IP ranges
const privateIpPatterns = [
/^10\./,
/^172\.(1[6-9]|2[0-9]|3[01])\./,
/^192\.168\./,
]
return privateIpPatterns.some((pattern) => pattern.test(hostname))
}
function extractImageUrl(image: unknown): string | undefined {
if (!image) return undefined
if (typeof image === "string") {
return image
}
if (Array.isArray(image) && image.length > 0) {
const first = image[0]
if (first && typeof first === "object" && "url" in first) {
return String(first.url)
}
}
if (typeof image === "object" && image !== null && "url" in image) {
return String(image.url)
}
return undefined
}
function resolveImageUrl(
imageUrl: string | undefined,
baseUrl: string,
): string | undefined {
if (!imageUrl) return undefined
try {
const url = new URL(imageUrl)
return url.href
} catch {
try {
const base = new URL(baseUrl)
return new URL(imageUrl, base.href).href
} catch {
return undefined
}
}
}
export async function GET(request: Request) {
try {
const { searchParams } = new URL(request.url)
const url = searchParams.get("url")
if (!url || !url.trim()) {
return Response.json(
{ error: "Missing or invalid url parameter" },
{ status: 400 },
)
}
const trimmedUrl = url.trim()
if (!isValidUrl(trimmedUrl)) {
return Response.json(
{ error: "Invalid URL. Must be http:// or https://" },
{ status: 400 },
)
}
const urlObj = new URL(trimmedUrl)
if (isPrivateHost(urlObj.hostname)) {
return Response.json(
{ error: "Private/localhost URLs are not allowed" },
{ status: 400 },
)
}
const { result, error } = await ogs({
url: trimmedUrl,
timeout: 8000,
fetchOptions: {
headers: {
"User-Agent":
"Mozilla/5.0 (compatible; SuperMemory/1.0; +https://supermemory.ai)",
},
},
})
if (error || !result) {
console.error("OG scraping error:", error)
return Response.json(
{ error: "Failed to fetch Open Graph data" },
{ status: 500 },
)
}
const ogTitle = result.ogTitle || result.twitterTitle || ""
const ogDescription =
result.ogDescription || result.twitterDescription || ""
const ogImageUrl =
extractImageUrl(result.ogImage) || extractImageUrl(result.twitterImage)
const resolvedImageUrl = resolveImageUrl(ogImageUrl, trimmedUrl)
const response: OGResponse = {
title: ogTitle,
description: ogDescription,
...(resolvedImageUrl && { image: resolvedImageUrl }),
}
return Response.json(response, {
headers: {
"Cache-Control": "public, s-maxage=3600, stale-while-revalidate=86400",
},
})
} catch (error) {
console.error("OG route error:", error)
return Response.json({ error: "Internal server error" }, { status: 500 })
}
}
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