#!/usr/bin/env node
/**
 * Script zum Hinzufügen der Lektionen 9 und 10 (Woche 1 - Wiederholung, Woche 1 - Vokabeltest)
 * zu bestehenden Bisaya-Kursen, falls diese noch fehlen.
 *
 * Verwendung:
 * node backend/scripts/add-bisaya-week1-lessons.js
 */

import { sequelize } from '../utils/sequelize.js';
import VocabCourseLesson from '../models/community/vocab_course_lesson.js';

const LESSONS_TO_ADD = [
  {
    lessonNumber: 9,
    weekNumber: 1,
    dayNumber: 5,
    lessonType: 'review',
    title: 'Woche 1 - Wiederholung',
    description: 'Wiederhole alle Inhalte der ersten Woche',
    culturalNotes: 'Wiederholung ist der Schlüssel zum Erfolg!',
    targetMinutes: 30,
    targetScorePercent: 80,
    requiresReview: false
  },
  {
    lessonNumber: 10,
    weekNumber: 1,
    dayNumber: 5,
    lessonType: 'vocab',
    title: 'Woche 1 - Vokabeltest',
    description: 'Teste dein Wissen aus Woche 1',
    culturalNotes: null,
    targetMinutes: 15,
    targetScorePercent: 80,
    requiresReview: true
  }
];

async function addBisayaWeek1Lessons() {
  await sequelize.authenticate();
  console.log('Datenbankverbindung erfolgreich hergestellt.\n');

  const [bisayaLanguage] = await sequelize.query(
    `SELECT id FROM community.vocab_language WHERE name = 'Bisaya' LIMIT 1`,
    { type: sequelize.QueryTypes.SELECT }
  );

  if (!bisayaLanguage) {
    console.error('❌ Bisaya-Sprache nicht gefunden.');
    return;
  }

  const courses = await sequelize.query(
    `SELECT id, title FROM community.vocab_course WHERE language_id = :languageId`,
    {
      replacements: { languageId: bisayaLanguage.id },
      type: sequelize.QueryTypes.SELECT
    }
  );

  console.log(`Gefunden: ${courses.length} Bisaya-Kurs(e)\n`);

  let totalAdded = 0;

  for (const course of courses) {
    console.log(`📚 Kurs: ${course.title} (ID: ${course.id})`);

    for (const lessonData of LESSONS_TO_ADD) {
      const existing = await VocabCourseLesson.findOne({
        where: {
          courseId: course.id,
          lessonNumber: lessonData.lessonNumber
        }
      });

      if (existing) {
        console.log(`   ⏭️  Lektion ${lessonData.lessonNumber}: "${lessonData.title}" - bereits vorhanden`);
        continue;
      }

      await VocabCourseLesson.create({
        courseId: course.id,
        chapterId: null,
        lessonNumber: lessonData.lessonNumber,
        title: lessonData.title,
        description: lessonData.description,
        weekNumber: lessonData.weekNumber,
        dayNumber: lessonData.dayNumber,
        lessonType: lessonData.lessonType,
        culturalNotes: lessonData.culturalNotes,
        targetMinutes: lessonData.targetMinutes,
        targetScorePercent: lessonData.targetScorePercent,
        requiresReview: lessonData.requiresReview
      });

      console.log(`   ✅ Lektion ${lessonData.lessonNumber}: "${lessonData.title}" hinzugefügt`);
      totalAdded++;
    }
    console.log('');
  }

  console.log(`\n🎉 Fertig! ${totalAdded} Lektion(en) hinzugefügt.`);
  console.log('💡 Führe danach create-bisaya-course-content.js aus, um die Übungen zu erstellen.');
}

addBisayaWeek1Lessons()
  .then(() => {
    sequelize.close();
    process.exit(0);
  })
  .catch((error) => {
    console.error('❌ Fehler:', error);
    sequelize.close();
    process.exit(1);
  });