From b6d749f781dda4a9d3f611270b9d60890a2d06b7 Mon Sep 17 00:00:00 2001
From: "Torsten Schulz (local)" <tsschulz@gmx.net>
Date: Fri, 17 Apr 2026 17:30:03 +0200
Subject: [PATCH] feat(VocabLessonView): enhance vocab trainer logic and answer
 normalization

- Refactored vocab trainer logic to improve handling of acceptable answers, allowing for multiple translations and synonyms.
- Introduced a new method to retrieve equivalent vocabulary answers, ensuring mixed pools from different lessons provide valid alternatives.
- Enhanced answer normalization process to prevent duplicates and improve the quality of acceptable answers presented to users.
---
 frontend/src/views/social/VocabLessonView.vue | 21 +++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/frontend/src/views/social/VocabLessonView.vue b/frontend/src/views/social/VocabLessonView.vue
index 9f59759..83701f7 100644
--- a/frontend/src/views/social/VocabLessonView.vue
+++ b/frontend/src/views/social/VocabLessonView.vue
@@ -3730,13 +3730,26 @@ export default {
       }
       this.vocabTrainerDirection = Math.random() < 0.5 ? 'L2R' : 'R2L';
       const allTrainerVocabs = [...this.trainableLessonVocab, ...this.vocabTrainerMixedPool];
-      const prompt = this.vocabTrainerDirection === 'L2R' ? vocab.learning : vocab.reference;
-      // Akzeptiere mehrere Übersetzungen für denselben Prompt (z. B. "Bitte wiederholen" UND "Kannst du das wiederholen?").
-      const acceptableAnswers = this.vocabTrainerDirection === 'L2R'
+      const direction = this.vocabTrainerDirection;
+      const prompt = direction === 'L2R' ? vocab.learning : vocab.reference;
+      // Akzeptiere mehrere Übersetzungen für denselben Prompt (z. B. Synonyme / Varianten auf der Lernsprache).
+      // Zusätzlich alle im gesamten Trainer-Pool gleichwertigen Ziele (wie früher via getEquivalentVocabAnswers),
+      // damit gemischte Pools aus mehreren Lektionen nicht plötzlich gültige Alternativen ablehnen.
+      const baseAnswers = direction === 'L2R'
         ? [vocab.reference]
         : (Array.isArray(vocab.learningVariants) && vocab.learningVariants.length > 0
-            ? vocab.learningVariants
+            ? [...vocab.learningVariants]
             : [vocab.learning]);
+      const equivalentAnswers = this.getEquivalentVocabAnswers(prompt, direction, allTrainerVocabs);
+      const mergedRaw = [...baseAnswers, ...equivalentAnswers].filter(Boolean);
+      const seenNorm = new Set();
+      const acceptableAnswers = [];
+      for (const a of mergedRaw) {
+        const n = this.normalizeVocab(a);
+        if (!n || seenNorm.has(n)) continue;
+        seenNorm.add(n);
+        acceptableAnswers.push(a);
+      }
       this.currentVocabQuestion = {
         vocab: vocab,
         prompt,