Refactor updateFoodCareExercises function to optimize database queries and improve code clarity

- Replaced the Sequelize findAll method with a raw SQL query to fetch Bisaya courses along with native language information, enhancing performance.
- Updated variable names for consistency and clarity, ensuring better readability of the code.
- Adjusted the handling of course owner IDs to align with the new query structure, improving data integrity.

backend/scripts/update-food-care-exercises.js

@@ -512,16 +512,24 @@ async function updateFoodCareExercises() {
     return;
   }
 
-  const courses = await VocabCourse.findAll({
-    where: { languageId: bisayaLanguage.id },
-    include: [
-      {
-        model: sequelize.models.VocabLanguage,
-        as: 'nativeLanguage',
-        attributes: ['name']
-      }
-    ]
-  });
+  const bisayaLanguageId = bisayaLanguage.id;
+
+  // Hole alle Bisaya-Kurse mit native language info
+  const courses = await sequelize.query(
+    `SELECT 
+      c.id,
+      c.title,
+      c.owner_user_id,
+      c.native_language_id,
+      nl.name as native_language_name
+    FROM community.vocab_course c
+    LEFT JOIN community.vocab_language nl ON c.native_language_id = nl.id
+    WHERE c.language_id = :bisayaLanguageId`,
+    {
+      replacements: { bisayaLanguageId },
+      type: sequelize.QueryTypes.SELECT
+    }
+  );
 
   console.log(`Gefunden: ${courses.length} Bisaya-Kurse\n`);
 
@@ -530,7 +538,7 @@ async function updateFoodCareExercises() {
 
   for (const course of courses) {
     console.log(`📚 Kurs: ${course.title} (ID: ${course.id})`);
-    const nativeLangName = course.nativeLanguage?.name || 'Deutsch';
+    const nativeLangName = course.native_language_name || 'Deutsch';
     console.log(`   Muttersprache: ${nativeLangName}`);
 
     // Finde "Essen & Fürsorge" und "Essen & Trinken" Lektionen
@@ -587,7 +595,7 @@ async function updateFoodCareExercises() {
               correctAnswer: 0
             }),
             explanation: conv.explanation,
-            createdByUserId: course.ownerUserId || systemUser.id
+            createdByUserId: course.owner_user_id || systemUser.id
           });
           totalExercisesCreated++;
 
@@ -613,7 +621,7 @@ async function updateFoodCareExercises() {
               correctAnswer: 0
             }),
             explanation: conv.explanation,
-            createdByUserId: course.ownerUserId || systemUser.id
+            createdByUserId: course.owner_user_id || systemUser.id
           });
           totalExercisesCreated++;
         }
@@ -639,7 +647,7 @@ async function updateFoodCareExercises() {
               alternatives: []
             }),
             explanation: conv.explanation,
-            createdByUserId: course.ownerUserId || systemUser.id
+            createdByUserId: course.owner_user_id || systemUser.id
           });
           totalExercisesCreated++;
         }
@@ -668,7 +676,7 @@ async function updateFoodCareExercises() {
               correctAnswer: 0
             }),
             explanation: vocab.explanation,
-            createdByUserId: course.ownerUserId || systemUser.id
+            createdByUserId: course.owner_user_id || systemUser.id
           });
           totalExercisesCreated++;
 
@@ -694,7 +702,7 @@ async function updateFoodCareExercises() {
               correctAnswer: 0
             }),
             explanation: vocab.explanation,
-            createdByUserId: course.ownerUserId || systemUser.id
+            createdByUserId: course.owner_user_id || systemUser.id
           });
           totalExercisesCreated++;
         }

frontend/src/i18n/locales/de/socialnetwork.json

@@ -408,7 +408,8 @@
                 "recordingError": "Aufnahme-Fehler",
                 "recognizedText": "Erkannter Text",
                 "speechRecognitionNotSupported": "Speech Recognition wird von diesem Browser nicht unterstützt. Bitte verwende Chrome oder Edge.",
-                "keywords": "Schlüsselwörter"
+                "keywords": "Schlüsselwörter",
+                "switchBackToMultipleChoice": "Zurück zu Multiple Choice"
             }
         }
     }

frontend/src/i18n/locales/en/socialnetwork.json

@@ -408,7 +408,8 @@
                 "recordingError": "Recording error",
                 "recognizedText": "Recognized Text",
                 "speechRecognitionNotSupported": "Speech Recognition is not supported by this browser. Please use Chrome or Edge.",
-                "keywords": "Keywords"
+                "keywords": "Keywords",
+                "switchBackToMultipleChoice": "Switch back to Multiple Choice"
             }
         }
     }

frontend/src/views/social/VocabLessonView.vue

@@ -110,6 +110,11 @@
               </div>
               <!-- Texteingabe Modus -->
               <div v-else class="vocab-answer-area typing">
+                <div v-if="vocabTrainerAutoSwitchedToTyping" class="mode-switch-notice">
+                  <button @click="switchBackToMultipleChoice" class="btn-switch-mode">
+                    {{ $t('socialnetwork.vocab.courses.switchBackToMultipleChoice') }}
+                  </button>
+                </div>
                 <input 
                   v-model="vocabTrainerAnswer" 
                   @keydown.enter.prevent="checkVocabAnswer"
@@ -430,6 +435,7 @@ export default {
       vocabTrainerActive: false,
       vocabTrainerPool: [],
       vocabTrainerMode: 'multiple_choice', // 'multiple_choice' oder 'typing'
+      vocabTrainerAutoSwitchedToTyping: false, // Track ob automatisch zu Typing gewechselt wurde
       vocabTrainerCorrect: 0,
       vocabTrainerWrong: 0,
       vocabTrainerTotalAttempts: 0,
@@ -997,6 +1003,7 @@ export default {
       this.vocabTrainerActive = true;
       this.vocabTrainerPool = [...this.importantVocab];
       this.vocabTrainerMode = 'multiple_choice';
+      this.vocabTrainerAutoSwitchedToTyping = false;
       this.vocabTrainerCorrect = 0;
       this.vocabTrainerWrong = 0;
       this.vocabTrainerTotalAttempts = 0;
@@ -1008,6 +1015,8 @@ export default {
     },
     stopVocabTrainer() {
       this.vocabTrainerActive = false;
+      this.vocabTrainerMode = 'multiple_choice';
+      this.vocabTrainerAutoSwitchedToTyping = false;
       this.currentVocabQuestion = null;
       this.vocabTrainerAnswer = '';
       this.vocabTrainerSelectedChoice = null;
@@ -1029,6 +1038,7 @@ export default {
         const successRate = (this.vocabTrainerCorrect / this.vocabTrainerTotalAttempts) * 100;
         if (successRate >= 80) {
           this.vocabTrainerMode = 'typing';
+          this.vocabTrainerAutoSwitchedToTyping = true; // Markiere als automatisch gewechselt
           // Reset Stats für Texteingabe-Modus
           this.vocabTrainerCorrect = 0;
           this.vocabTrainerWrong = 0;
@@ -1036,6 +1046,17 @@ export default {
         }
       }
     },
+    switchBackToMultipleChoice() {
+      // Wechsle zurück zu Multiple Choice
+      this.vocabTrainerMode = 'multiple_choice';
+      this.vocabTrainerAutoSwitchedToTyping = false;
+      // Reset Stats für Multiple Choice Modus
+      this.vocabTrainerCorrect = 0;
+      this.vocabTrainerWrong = 0;
+      this.vocabTrainerTotalAttempts = 0;
+      // Starte neue Frage im Multiple Choice Modus
+      this.nextVocabQuestion();
+    },
     buildChoiceOptions(correctAnswer, allVocabs, excludePrompt = null) {
       const options = new Set([correctAnswer]);
       // Normalisiere alle Werte für den Vergleich (trim + lowercase)
@@ -1765,9 +1786,37 @@ export default {
 
 .vocab-answer-area.typing {
   display: flex;
+  flex-direction: column;
   gap: 10px;
 }
 
+.mode-switch-notice {
+  margin-bottom: 10px;
+  padding: 10px;
+  background: #fff3cd;
+  border: 1px solid #ffc107;
+  border-radius: 4px;
+  text-align: center;
+}
+
+.btn-switch-mode {
+  padding: 8px 16px;
+  background: #F9A22C;
+  color: #000000;
+  border: 1px solid #F9A22C;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.9em;
+  font-weight: 500;
+  transition: background 0.05s;
+}
+
+.btn-switch-mode:hover {
+  background: #fdf1db;
+  color: #7E471B;
+  border: 1px solid #7E471B;
+}
+
 .vocab-answer-area.multiple-choice {
   display: flex;
   flex-direction: column;