Autoswipe: Fix endless loop if blacklist empty

public/scripts/power-user.js

@@ -2916,6 +2916,46 @@ export function flushEphemeralStoppingStrings() {
     EPHEMERAL_STOPPING_STRINGS.splice(0, EPHEMERAL_STOPPING_STRINGS.length);
 }
 
+/**
+ * Checks if the generated text should be filtered based on the auto-swipe settings.
+ * @param {string} text The text to check
+ * @returns {boolean} If the generated text should be filtered
+ */
+export function generatedTextFiltered(text) {
+    /**
+     * Checks if the given text contains any of the blacklisted words.
+     * @param {string} text The text to check
+     * @param {string[]} blacklist The list of blacklisted words
+     * @param {number} threshold The number of blacklisted words that need to be present to trigger the check
+     * @returns {boolean} Whether the text contains blacklisted words
+     */
+    function containsBlacklistedWords(text, blacklist, threshold) {
+        const regex = new RegExp(`\\b(${blacklist.join('|')})\\b`, 'gi');
+        const matches = text.match(regex) || [];
+        return matches.length >= threshold;
+    }
+
+    // Make sure a generated text is non-empty
+    // Otherwise we might get in a loop with a broken API
+    text = text.trim();
+    if (text.length > 0) {
+        if (power_user.auto_swipe_minimum_length) {
+            if (text.length < power_user.auto_swipe_minimum_length) {
+                console.log('Generated text size too small');
+                return true;
+            }
+        }
+        if (power_user.auto_swipe_blacklist.length && power_user.auto_swipe_blacklist_threshold) {
+            if (containsBlacklistedWords(text, power_user.auto_swipe_blacklist, power_user.auto_swipe_blacklist_threshold)) {
+                console.log('Generated text has blacklisted words');
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
 /**
  * Gets the custom stopping strings from the power user settings.
  * @param {number | undefined} limit Number of strings to return. If 0 or undefined, returns all strings.