code cleanup

frontend/src/routes/user/OidcCallback.svelte

@@ -1,24 +1,26 @@
 <script>
-    import { onMount } from 'svelte';
-    import { t } from '../../translations.svelte.js';
+    import { onMount }       from 'svelte';
     import { useTinyRouter } from 'svelte-tiny-router';
-    import { checkUser } from '../../user.svelte.js';
+
+    import { api }           from '../../urls.svelte.js';
+    import { t }             from '../../translations.svelte.js';
+    import { checkUser }     from '../../user.svelte.js';
 
     const router = useTinyRouter();
+    let message  = $state(t('processing_code'));
 
-    let message = $state(t('processing_code'));
-    onMount(async () => {
+    async function process(){
         let params = new URLSearchParams(location.search);
 
         if (params.get('code')){
-            const url = `${location.protocol}//${location.host.replace('5173','8080')}/api/user/oidc/token`;
+            const url = api('user/oidc/token');
             const resp = await fetch(url,{
-                method : 'POST',
-                body: JSON.stringify(Object.fromEntries(params)),
-                credentials: 'include'
+                method      : 'POST',
+                body        : JSON.stringify(Object.fromEntries(params)),
+                credentials : 'include'
             });
             if (resp.ok){
-                let json = await resp.json();
+                let json       = await resp.json();
                 const redirect = json.redirect ? json.redirect : '/user';
                 checkUser();
                 router.navigate(redirect);
@@ -27,7 +29,9 @@
                 if (!message) message = t(resp);
             }
         }
-    });
+    }
+
+    onMount(process);
 </script>
 
 {message}