Add grammar exercise creation in course generation

- Integrated functionality to create example grammar exercises for grammar lessons during course creation. - Added a new helper function to generate gap fill and multiple choice exercises based on lesson data. - Enhanced logging to confirm the number of grammar exercises created, improving feedback during course setup.
2026-01-19 15:15:24 +01:00
parent c13cb40c7b
commit 0572a0eb50
3 changed files with 537 additions and 1 deletions
--- a/backend/scripts/add-grammar-exercises-to-existing-courses.js
+++ b/backend/scripts/add-grammar-exercises-to-existing-courses.js
@@ -0,0 +1,141 @@
+#!/usr/bin/env node
+/**
+ * Script zum Hinzufügen von Grammatik-Übungen zu bestehenden Kursen
+ * 
+ * Verwendung:
+ * node backend/scripts/add-grammar-exercises-to-existing-courses.js
+ * 
+ * Fügt Beispiel-Grammatik-Übungen zu allen Grammar-Lektionen hinzu, die noch keine Übungen haben.
+ */
+
+import { sequelize } from '../utils/sequelize.js';
+import VocabCourseLesson from '../models/community/vocab_course_lesson.js';
+import VocabGrammarExercise from '../models/community/vocab_grammar_exercise.js';
+import User from '../models/community/user.js';
+
+async function findOrCreateSystemUser() {
+  let systemUser = await User.findOne({ 
+    where: { 
+      username: 'system' 
+    } 
+  });
+
+  if (!systemUser) {
+    systemUser = await User.findOne({ 
+      where: { 
+        username: 'admin' 
+      } 
+    });
+  }
+
+  if (!systemUser) {
+    console.error('❌ System-Benutzer nicht gefunden. Bitte erstelle einen System-Benutzer.');
+    throw new Error('System user not found');
+  }
+
+  return systemUser;
+}
+
+// Erstelle Beispiel-Grammatik-Übungen für eine Grammar-Lektion
+function createExampleGrammarExercises(lessonId, lessonTitle, ownerUserId) {
+  const exercises = [];
+  
+  // Beispiel-Übung 1: Gap Fill (Lückentext)
+  exercises.push({
+    lessonId: lessonId,
+    exerciseTypeId: 1, // gap_fill
+    exerciseNumber: 1,
+    title: `${lessonTitle} - Übung 1`,
+    instruction: 'Fülle die Lücken mit den richtigen Wörtern.',
+    questionData: JSON.stringify({
+      type: 'gap_fill',
+      text: 'Hallo! Wie geht es {gap}? Mir geht es {gap}, danke!',
+      gaps: 2
+    }),
+    answerData: JSON.stringify({
+      type: 'gap_fill',
+      answers: ['dir', 'gut']
+    }),
+    explanation: 'Die richtigen Antworten sind "dir" und "gut".',
+    createdByUserId: ownerUserId
+  });
+
+  // Beispiel-Übung 2: Multiple Choice
+  exercises.push({
+    lessonId: lessonId,
+    exerciseTypeId: 2, // multiple_choice
+    exerciseNumber: 2,
+    title: `${lessonTitle} - Übung 2`,
+    instruction: 'Wähle die richtige Antwort aus.',
+    questionData: JSON.stringify({
+      type: 'multiple_choice',
+      question: 'Wie sagt man "Guten Tag"?',
+      options: ['Guten Tag', 'Gute Nacht', 'Auf Wiedersehen', 'Tschüss']
+    }),
+    answerData: JSON.stringify({
+      type: 'multiple_choice',
+      correctAnswer: 0
+    }),
+    explanation: 'Die richtige Antwort ist "Guten Tag".',
+    createdByUserId: ownerUserId
+  });
+
+  return exercises;
+}
+
+async function addGrammarExercisesToExistingCourses() {
+  await sequelize.authenticate();
+  console.log('Datenbankverbindung erfolgreich hergestellt.\n');
+
+  const systemUser = await findOrCreateSystemUser();
+  console.log(`Verwende System-Benutzer: ${systemUser.username} (ID: ${systemUser.id})\n`);
+
+  // Finde alle Grammar-Lektionen ohne Übungen
+  const grammarLessons = await sequelize.query(
+    `SELECT l.id, l.title, l.course_id, c.owner_user_id
+     FROM community.vocab_course_lesson l
+     JOIN community.vocab_course c ON c.id = l.course_id
+     WHERE l.lesson_type = 'grammar'
+     AND NOT EXISTS (
+       SELECT 1 FROM community.vocab_grammar_exercise e
+       WHERE e.lesson_id = l.id
+     )
+     ORDER BY l.course_id, l.lesson_number`,
+    {
+      type: sequelize.QueryTypes.SELECT
+    }
+  );
+
+  console.log(`Gefunden: ${grammarLessons.length} Grammar-Lektionen ohne Übungen\n`);
+
+  if (grammarLessons.length === 0) {
+    console.log('✅ Alle Grammar-Lektionen haben bereits Übungen.');
+    return;
+  }
+
+  let addedCount = 0;
+  for (const lesson of grammarLessons) {
+    const exercises = createExampleGrammarExercises(lesson.id, lesson.title, lesson.owner_user_id);
+    
+    for (const exercise of exercises) {
+      await VocabGrammarExercise.create(exercise);
+      addedCount++;
+    }
+    
+    console.log(`✅ ${exercises.length} Übungen zu "${lesson.title}" hinzugefügt`);
+  }
+
+  console.log(`\n🎉 Zusammenfassung:`);
+  console.log(`   ${addedCount} Grammatik-Übungen zu ${grammarLessons.length} Lektionen hinzugefügt`);
+}
+
+addGrammarExercisesToExistingCourses()
+  .then(() => {
+    sequelize.close();
+    process.exit(0);
+  })
+  .catch((error) => {
+    console.error('❌ Fehler:', error);
+    sequelize.close();
+    process.exit(1);
+  });