feat(WEB-132): add middlewares, support for seamless login and improve lang based routes

middlewares/currentWebLogin.ts

@@ -0,0 +1,31 @@
+import { NextResponse } from "next/server"
+
+import { findLang } from "@/constants/languages"
+import { badRequest } from "@/server/errors/next"
+
+import type { NextMiddleware } from "next/server"
+
+import type { MiddlewareMatcher } from "@/types/middleware"
+
+export const middleware: NextMiddleware = (request) => {
+  const redirectTo = request.nextUrl.searchParams.get("returnurl")
+
+  if (!redirectTo) {
+    return badRequest()
+  }
+
+  const lang = findLang(request.nextUrl.pathname)!
+
+  const headers = new Headers(request.headers)
+  headers.set("x-redirect-to", redirectTo)
+
+  return NextResponse.rewrite(new URL(`/${lang}/login`, request.nextUrl), {
+    request: {
+      headers,
+    },
+  })
+}
+
+export const matcher: MiddlewareMatcher = (request) => {
+  return request.nextUrl.pathname.endsWith("/updatelogin")
+}