fix: improve auth handling and logging

auth.ts

@@ -136,7 +136,9 @@ export const config = {
       return session
     },
     async redirect({ baseUrl, url }) {
+      console.log(`[auth] deciding redirect URL`, { baseUrl, url })
       if (url.startsWith("/")) {
+        console.log(`[auth] relative URL accepted, returning: ${baseUrl}${url}`)
         // Allows relative callback URLs
         return `${baseUrl}${url}`
       } else {
@@ -146,17 +148,19 @@ export const config = {
           if (
             /\.scandichotels\.(dk|de|com|fi|no|se)$/.test(parsedUrl.hostname)
           ) {
+            console.log(`[auth] subdomain URL accepted, returning: ${url}`)
             // Allows any subdomains on all top level domains above
             return url
           } else if (parsedUrl.origin === baseUrl) {
             // Allows callback URLs on the same origin
+            console.log(`[auth] origin URL accepted, returning: ${url}`)
             return url
           }
         } catch (e) {
-          console.error("Error in auth redirect callback")
-          console.error(e)
+          console.error(`[auth] error parsing incoming URL for redirection`, e)
         }
       }
+      console.log(`[auth] URL denied, returning base URL: ${baseUrl}`)
       return baseUrl
     },
     async authorized({ auth, request }) {