fix: improve auth handling and logging

app/[lang]/(live)/(public)/login/route.ts

@@ -11,6 +11,10 @@ export async function GET(
   request: NextRequest,
   context: { params: { lang: Lang } }
 ) {
+  if (!env.PUBLIC_URL) {
+    throw internalServerError("No value for env.PUBLIC_URL")
+  }
+
   let redirectHeaders: Headers | undefined = undefined
   let redirectTo: string
 
@@ -20,10 +24,6 @@ export async function GET(
   const isSeamlessMagicLink =
     request.headers.get("x-login-source") === "seamless-magiclink"
 
-  if (!env.PUBLIC_URL) {
-    throw internalServerError("No value for env.PUBLIC_URL")
-  }
-
   console.log(
     `[login] source: ${request.headers.get("x-login-source") || "normal"}`
   )
@@ -32,6 +32,7 @@ export async function GET(
   const redirectToSearchParamValue =
     request.nextUrl.searchParams.get("redirectTo")
   const redirectToFallback = "/"
+
   console.log(`[login] redirectTo cookie value: ${redirectToCookieValue}`)
   console.log(
     `[login] redirectTo search param value: ${redirectToSearchParamValue}`
@@ -104,20 +105,16 @@ export async function GET(
       )
     } catch (e) {
       console.error(
-        "Unable to create URL for seamless login, proceeding without it."
+        "[login] unable to create URL for seamless login, proceeding without it.",
+        e
       )
-      console.error(e)
     }
   }
 
   try {
-    /**
-     * Passing `redirect: false` to `signIn` will return the URL instead of
-     * automatically redirecting to it inside of `signIn`.
-     * https://github.com/nextauthjs/next-auth/blob/3c035ec/packages/next-auth/src/lib/actions.ts#L76
-     */
     console.log(`[login] final redirectUrl: ${redirectTo}`)
     console.log({ login_env: process.env })
+
     /** Record<string, any> is next-auth typings */
     const params: Record<string, any> = {
       ui_locales: context.params.lang,
@@ -152,6 +149,11 @@ export async function GET(
       params.acr_values = "abc"
     }
     params.scope = params.scope.join(" ")
+    /**
+     * Passing `redirect: false` to `signIn` will return the URL instead of
+     * automatically redirecting to it inside of `signIn`.
+     * https://github.com/nextauthjs/next-auth/blob/3c035ec/packages/next-auth/src/lib/actions.ts#L76
+     */
     const redirectUrl = await signIn(
       "curity",
       {
@@ -162,9 +164,13 @@ export async function GET(
     )
 
     if (redirectUrl) {
-      return NextResponse.redirect(redirectUrl, {
+      const redirectOpts = {
         headers: redirectHeaders,
-      })
+      }
+      console.log(`[login] redirecting to: ${redirectUrl}`, redirectOpts)
+      return NextResponse.redirect(redirectUrl, redirectOpts)
+    } else {
+      console.error(`[login] missing redirectUrl reponse from signIn()`)
     }
   } catch (error) {
     if (error instanceof AuthError) {