fix: refactor onError

lib/trpc/server.ts

@@ -1,10 +1,8 @@
 import { TRPCError } from "@trpc/server"
 import { redirect } from "next/navigation"
-import { NextResponse } from "next/server"
 
 import { Lang } from "@/constants/languages"
 import { webviews } from "@/constants/routes/webviews"
-import { env } from "@/env/server"
 import { appRouter } from "@/server"
 import { createContext } from "@/server/context"
 import { internalServerError } from "@/server/errors/next"
@@ -24,15 +22,20 @@ export function serverClient() {
 
       if (error instanceof TRPCError) {
         if (error.code === "UNAUTHORIZED") {
-          const lang = ctx?.lang || Lang.en
+          let lang = Lang.en
+          let pathname = "/"
+          let fullUrl = "/"
 
-          const langIndex = ctx!.url.indexOf(`/${lang}`)
+          if (ctx) {
-          const pathname = ctx?.url.substring(langIndex)
+            lang = ctx.lang
+            pathname = ctx.pathname
+            fullUrl = ctx.url
+          }
 
-          if (pathname && webviews.includes(pathname)) {
+          const fullPathname = new URL(fullUrl).pathname
-            const returnUrl = ctx!.url
 
-            const redirectUrl = `/${lang}/webview/refresh?returnurl=${encodeURIComponent(returnUrl)}`
+          if (webviews.includes(fullPathname)) {
+            const redirectUrl = `/${lang}/webview/refresh?returnurl=${encodeURIComponent(fullUrl)}`
             console.error(
               "Unautorized in webview, redirecting to: ",
               redirectUrl