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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| import { NextRequest, NextResponse } from "next/server"; | ||
| import parseURL from "@/helpers/parser"; | ||
| import { DocumentInfo } from "@/types"; | ||
| import axios from "axios"; | ||
| import { metadata } from "@/app/page"; | ||
|
|
||
| export async function GET(request: NextRequest) { | ||
| const Base64searchParams = request.nextUrl.searchParams.get('base64'); | ||
| const URLsearchParams = request.nextUrl.searchParams.get('url'); | ||
|
|
||
| try { | ||
| if (!Base64searchParams && !URLsearchParams) return new NextResponse(null, { status: 200 }); | ||
| let info: DocumentInfo | null = null; | ||
|
|
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| if (Base64searchParams) { | ||
| // directly run the parsing function | ||
| info = await parseURL(Base64searchParams); | ||
| } | ||
| if (URLsearchParams) { | ||
| // fetch the document information from the URL | ||
| try { | ||
| const response = await axios.get(URLsearchParams); | ||
| if (response.status === 200) { | ||
| info = await parseURL(response.data); | ||
| } else { | ||
| return new NextResponse("Not a valid URL", { status: 500 }); | ||
| } | ||
| } catch (error) { | ||
| return new NextResponse("Not a valid URL", { status: 500 }); | ||
| } | ||
| } | ||
|
|
||
| if (!info) { | ||
| const ogImage = "https://raw.githubusercontent.com/asyncapi/studio/master/apps/studio-next/public/img/meta-studio-og-image.jpeg"; | ||
|
|
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| const crawlerInfo = ` | ||
| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="UTF-8"> | ||
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | ||
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | ||
| <title>"${metadata.openGraph?.title}"</title> | ||
| <meta property="og:title" content="${metadata.openGraph?.title}" /> | ||
| <meta property="og:description" content="${metadata.openGraph?.description}" /> | ||
| <meta property="og:url" content="${metadata.openGraph?.url}" /> | ||
| <meta property="og:image" content="${ogImage}" /> | ||
| ` | ||
| return new NextResponse(crawlerInfo, { | ||
| headers: { | ||
| 'Content-Type': 'text/html', | ||
| }, | ||
| }) | ||
| } | ||
|
|
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| let ogImageParams = new URLSearchParams(); | ||
|
|
||
| if (info.title) { | ||
| ogImageParams.append('title', info.title.toString()); | ||
| } | ||
| if (info.description) { | ||
| ogImageParams.append('description', info.description.toString()); | ||
| } | ||
| if (info.numServers) { | ||
| ogImageParams.append('numServers', info.numServers.toString()); | ||
| } | ||
| if (info.numChannels) { | ||
| ogImageParams.append('numChannels', info.numChannels.toString()); | ||
| } | ||
| if (info.numOperations) { | ||
| ogImageParams.append('numOperations', info.numOperations.toString()); | ||
| } | ||
| if (info.numMessages) { | ||
| ogImageParams.append('numMessages', info.numMessages.toString()); | ||
| } | ||
|
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| const ogImageurl = `https://ogp-studio.netlify.app/api/og?${ogImageParams.toString()}`; | ||
|
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| const crawlerInfo = ` | ||
| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="UTF-8"> | ||
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | ||
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | ||
| <title>${info.title}</title> | ||
| ${info.title ? `<meta property="og:title" content="${info.title}" />` : ''} | ||
| ${info.description ? `<meta property="og:description" content="${info.description}" />` : ''} | ||
| <meta property="og:image" content=${ogImageurl} /> | ||
| </head> | ||
| </html> | ||
| `; | ||
|
|
||
| return new NextResponse(crawlerInfo, { | ||
| status: 200, | ||
| headers: { | ||
| 'Content-Type': 'text/html', | ||
| }, | ||
| }); | ||
| } catch (err) { | ||
| return new NextResponse("Not a valid URL", { status: 500 }); | ||
| } | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| import { Input, Parser } from '@asyncapi/parser'; | ||
| import { DocumentInfo } from '@/types'; | ||
|
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| export default async function parseURL(asyncapiDocument: string): Promise<DocumentInfo | null> { | ||
| const parser = new Parser(); | ||
|
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| const base64Regex = /^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?$/; | ||
|
|
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| let decodedDocument: Input = ""; | ||
| if (base64Regex.test(asyncapiDocument)) { | ||
| decodedDocument = Buffer.from(asyncapiDocument, "base64").toString("utf-8"); | ||
| } else { | ||
| decodedDocument = asyncapiDocument; | ||
| } | ||
|
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| const { document, diagnostics } = await parser.parse(decodedDocument); | ||
|
|
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| if (diagnostics.length) { | ||
| return null; | ||
| } | ||
|
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| let title = document?.info().title(); | ||
| if (title) { | ||
| title = title.length <= 20 ? title : title.slice(0, 20) + "..."; | ||
| } | ||
| const version = document?.info().version(); | ||
|
|
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| let description = document?.info().description(); | ||
| if (description) { | ||
| description = description.length <= 100 ? description : description.slice(0, 100) + "..."; | ||
| } | ||
|
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| const servers = document?.allServers(); | ||
| const channels = document?.allChannels(); | ||
| const operations = document?.allOperations(); | ||
| const messages = document?.allMessages(); | ||
|
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| const numServers = servers?.length; | ||
| const numChannels = channels?.length; | ||
| const numOperations = operations?.length; | ||
| const numMessages = messages?.length; | ||
|
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| const response = { | ||
| title, | ||
| version, | ||
| description, | ||
| numServers, | ||
| numChannels, | ||
| numOperations, | ||
| numMessages | ||
| }; | ||
| return response; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| import { NextRequest, NextResponse, userAgent } from "next/server"; | ||
| import crawlers from 'crawler-user-agents'; | ||
|
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| export async function middleware(request: NextRequest) { | ||
| const userAgents = crawlers.map(crawler => crawler.pattern); | ||
| const requestInfo = userAgent(request); | ||
| const res = NextResponse.next(); | ||
|
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| for (const ua of userAgents) { | ||
| if (requestInfo.ua.toLowerCase().includes(ua.toLowerCase())) { | ||
|
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| const documentURL = request.nextUrl.searchParams.get("url"); | ||
| const encodedDocument = request.nextUrl.searchParams.get("base64"); | ||
|
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| if (!encodedDocument && !documentURL) { | ||
| return res; | ||
| } | ||
| if (encodedDocument) { | ||
| return NextResponse.rewrite(new URL(`/api/crawler?base64=${encodedDocument}`, request.url)); | ||
| } | ||
| if (documentURL) { | ||
| return NextResponse.rewrite(new URL(`/api/crawler?url=${documentURL}`, request.url)); | ||
| } | ||
| } | ||
| } | ||
| return res; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,13 @@ | ||
| import type specs from '@asyncapi/specs'; | ||
|
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| export type SpecVersions = keyof typeof specs.schemas; | ||
|
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| export interface DocumentInfo { | ||
| title? : string, | ||
| version? : string, | ||
| description? : string, | ||
| numServers? : number, | ||
| numChannels? : number, | ||
| numOperations? : number, | ||
| numMessages?: number | ||
| } |
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