feat: Erweiterung der Antwortvarianten für Vokabelübungen zur Unterstützung von Alternativen und Phrasen

frontend/src/views/social/VocabLessonView.vue

@@ -4152,6 +4152,67 @@ export default {
         : s;
       return this.normalizeComparableText(source);
     },
+    expandSingleAnswerVariants(answer) {
+      const base = String(answer || '').trim();
+      if (!base) return [];
+
+      const words = base.split(/\s+/).map((word) => {
+        if (!word.includes('/')) {
+          return [word];
+        }
+
+        const match = word.match(/^([([{„\"'“‘]*)(.*?)([)\]}.,!?;:»\"'”’]*)$/);
+        const prefix = match?.[1] || '';
+        const core = match?.[2] || word;
+        const suffix = match?.[3] || '';
+        const parts = core
+          .split('/')
+          .map((part) => part.trim())
+          .filter(Boolean);
+
+        if (parts.length < 2 || parts.length > 8) {
+          return [word];
+        }
+
+        return parts.map((part) => `${prefix}${part}${suffix}`);
+      });
+
+      const variants = [''];
+      for (const options of words) {
+        const next = [];
+        for (const current of variants) {
+          for (const option of options) {
+            next.push(`${current}${current ? ' ' : ''}${option}`);
+          }
+        }
+        if (next.length > 48) {
+          return [base];
+        }
+        variants.splice(0, variants.length, ...next);
+      }
+
+      return [...new Set([base, ...variants])];
+    },
+    splitPhraseAlternatives(answer) {
+      const base = String(answer || '').trim();
+      if (!base) return [];
+      // Splits full-phrase alternatives like "A / B" into ["A", "B"] when they look like phrase-level alternatives.
+      const parts = base.split(/\s*[\/|;]\s*/).map(p => p.trim()).filter(Boolean);
+      if (parts.length >= 2 && parts.length <= 6) return parts;
+      return [base];
+    },
+    expandAnswerVariants(answer) {
+      const base = String(answer || '').trim();
+      if (!base) return [];
+
+      const phraseAlternatives = this.splitPhraseAlternatives(base);
+      if (phraseAlternatives.length >= 2) {
+        const expanded = phraseAlternatives.flatMap((part) => this.expandSingleAnswerVariants(part));
+        return [...new Set(expanded)];
+      }
+
+      return this.expandSingleAnswerVariants(base);
+    },
     reportSrsReviewForCurrentQuestion(isCorrect) {
       if (!this.currentVocabQuestion?.vocab || !this.courseId) {
         return;
@@ -4185,10 +4246,11 @@ export default {
       const normalizedUser = this.normalizeVocab(userAnswer, {
         ignoreTrailingParentheticalNotes: useTypingNormalization
       });
-      const normalizedCorrectAnswers = (this.currentVocabQuestion.answers || [this.currentVocabQuestion.answer])
-        .map(answer => this.normalizeVocab(answer, {
-          ignoreTrailingParentheticalNotes: useTypingNormalization
-        }));
+      const rawAnswers = this.currentVocabQuestion.answers || [this.currentVocabQuestion.answer];
+      // Expand alternatives like "A / B" into separate acceptable answers
+      const expandedAnswers = rawAnswers.flatMap(a => this.expandAnswerVariants(a));
+      const normalizedCorrectAnswers = expandedAnswers
+        .map(answer => this.normalizeVocab(answer, { ignoreTrailingParentheticalNotes: useTypingNormalization }));
       this.vocabTrainerLastCorrect = normalizedCorrectAnswers.includes(normalizedUser);
       
       // Update Stats