Added redirects middleware

Author: zahidalidev

next.config.js

@@ -14,36 +14,36 @@ const nextConfig = {
 	// https://vercel.com/docs/projects/environment-variables/system-environment-variables
 	// basePath: process.env.VERCEL_ENV === 'production' ? '/docs' : '',
 	basePath: '/docs',
-	async redirects() {
-		return [
-			...updatedRedirectsData,
-			{
-				source: `/v/${config.DOCS_LATEST_VERSION}/:slug*`,
-				destination: `https://sourcegraph.com/docs/:slug*`,
-				permanent: false
-			},
-			{
-				source: `/@${config.DOCS_LATEST_VERSION}/:slug*`,
-				destination: `https://sourcegraph.com/docs/:slug*`,
-				permanent: false
-			},
-			{
-				source: '/v/:version(\\d+\\.\\d+)/:slug*',
-				destination: 'https://:version.sourcegraph.com/:slug*',
-				permanent: true
-			},
-			{
-				source: '/@:version(\\d+\\.\\d+)/:slug*',
-				destination: 'https://:version.sourcegraph.com/:slug*',
-				permanent: true
-			},
-			{
-				source: '/changelog.rss',
-				destination: '/technical-changelog.rss',
-				permanent: true
-			}
-		];
-	}
+	// async redirects() {
+	// 	return [
+	// 		...updatedRedirectsData,
+	// 		{
+	// 			source: `/v/${config.DOCS_LATEST_VERSION}/:slug*`,
+	// 			destination: `https://sourcegraph.com/docs/:slug*`,
+	// 			permanent: false
+	// 		},
+	// 		{
+	// 			source: `/@${config.DOCS_LATEST_VERSION}/:slug*`,
+	// 			destination: `https://sourcegraph.com/docs/:slug*`,
+	// 			permanent: false
+	// 		},
+	// 		{
+	// 			source: '/v/:version(\\d+\\.\\d+)/:slug*',
+	// 			destination: 'https://:version.sourcegraph.com/:slug*',
+	// 			permanent: true
+	// 		},
+	// 		{
+	// 			source: '/@:version(\\d+\\.\\d+)/:slug*',
+	// 			destination: 'https://:version.sourcegraph.com/:slug*',
+	// 			permanent: true
+	// 		},
+	// 		{
+	// 			source: '/changelog.rss',
+	// 			destination: '/technical-changelog.rss',
+	// 			permanent: true
+	// 		}
+	// 	];
+	// }
 };
 
 module.exports = async () => {

src/middleware.ts

@@ -0,0 +1,81 @@
+import { NextResponse } from 'next/server'
+import type { NextRequest } from 'next/server'
+import docsConfig from '../docs.config.js'
+const { updatedRedirectsData } = require('./data/redirects.ts');
+function createRedirectUrl(request: NextRequest, destination: string, path: string): string {
+  // Handle absolute URLs
+  if (destination.startsWith('http')) {
+    // Handle dynamic slug replacements
+    if (destination.includes(':slug')) {
+      const slugMatch = path.match(/[^/]+$/)
+      const slug = slugMatch ? slugMatch[0] : ''
+      destination = destination.replace(':slug*', slug)
+    }
+    // Handle version replacements
+    if (destination.includes(':version')) {
+      const versionMatch = path.match(/\d+\.\d+/)
+      const version = versionMatch ? versionMatch[0] : ''
+      destination = destination.replace(':version', version)
+    }
+    return destination
+  }
+  // Handle relative paths
+  const basePath = '/docs'
+  return destination.startsWith('/') ? 
+    `${request.nextUrl.origin}${basePath}${destination}` : 
+    `${request.nextUrl.origin}${basePath}/${destination}`
+}
+
+export function middleware(request: NextRequest) {
+  const path = request.nextUrl.pathname
+  const pathWithoutBase = path.replace('/docs', '')
+  // Handle base redirects from redirects.ts
+  const redirect = updatedRedirectsData.find((r: any) => r.source === pathWithoutBase)
+  if (redirect) {
+    return NextResponse.redirect(createRedirectUrl(request, redirect.destination, path))
+  }
+  // Handle version without slug
+  const versionOnlyMatch = pathWithoutBase.match(/^\/v\/(\d+\.\d+)$/)
+  if (versionOnlyMatch) {
+    return NextResponse.redirect(`https://${versionOnlyMatch[1]}.sourcegraph.com/`)
+  }
+  // Handle version-specific redirects
+  if (pathWithoutBase.startsWith(`/v/${docsConfig.DOCS_LATEST_VERSION}/`)) {
+    return NextResponse.redirect(createRedirectUrl(
+      request,
+      `https://sourcegraph.com/docs/:slug*`,
+      pathWithoutBase
+    ))
+  }
+  if (pathWithoutBase.startsWith(`/@${docsConfig.DOCS_LATEST_VERSION}/`)) {
+    return NextResponse.redirect(createRedirectUrl(
+      request,
+      `https://sourcegraph.com/docs/:slug*`,
+      pathWithoutBase
+    ))
+  }
+  const versionMatch = pathWithoutBase.match(/^\/v\/(\d+\.\d+)\/(.*)/)
+  if (versionMatch) {
+    return NextResponse.redirect(createRedirectUrl(
+      request,
+      'https://:version.sourcegraph.com/:slug*',
+      pathWithoutBase
+    ))
+  }
+  const atVersionMatch = pathWithoutBase.match(/^\/@(\d+\.\d+)\/(.*)/)
+  if (atVersionMatch) {
+    return NextResponse.redirect(createRedirectUrl(
+      request,
+      'https://:version.sourcegraph.com/:slug*',
+      pathWithoutBase
+    ))
+  }
+  if (pathWithoutBase === '/changelog.rss') 
+    return NextResponse.redirect(createRedirectUrl(request, '/technical-changelog.rss', path))
+  return NextResponse.next()
+}
+export const config = {
+  matcher: [
+    '/((?!api|_next/static|_next/image|assets|favicon.ico|sw.js).*)',
+  ],
+}