From bee6d83a7141d7e58c08ffeb104c7a74d819823c Mon Sep 17 00:00:00 2001
From: Stijn Peeters <stijn.peeters@uva.nl>
Date: Mon, 3 Apr 2023 20:12:33 +0200
Subject: [PATCH] Intercept login page when trying to upload to 4CAT

---
 popup/interface.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/popup/interface.js b/popup/interface.js
index 78d1ac0..491633b 100644
--- a/popup/interface.js
+++ b/popup/interface.js
@@ -306,9 +306,16 @@ async function button_handler(event) {
             if(xhr.readyState === xhr.DONE) {
                 if(xhr.status === 200) {
                     status.innerText = 'File uploaded. Waiting for processing to finish.'
+                    if (xhr.responseURL.indexOf('/login/') >= 0) {
+                        is_uploading = false;
+                        status.innerText = 'You are not logged in to this 4CAT server! Open it in a separate tab, log in and try again.'
+                        return;
+                    }
+
                     try {
                         response = JSON.parse(response);
                     } catch (e) {
+                        is_uploading = false;
                         status.innerText = 'Error during upload: malformed response from 4CAT server.';
                         return;
                     }