#!/usr/bin/env node
/**
 * Erweitert bestehende Bisaya-Kurse um die Stabilisierungsphase.
 *
 * Verwendung:
 * node backend/scripts/extend-bisaya-course-phase5.js
 */

import { sequelize } from '../utils/sequelize.js';
import VocabCourse from '../models/community/vocab_course.js';
import VocabCourseLesson from '../models/community/vocab_course_lesson.js';
import { getBisayaLessonPedagogy } from './bisaya-course-phase2-pedagogy.js';
import { BISAYA_PHASE5_DIDACTICS, BISAYA_PHASE5_LESSONS } from './bisaya-course-phase5-extension.js';

async function extendBisayaCoursePhase5() {
  await sequelize.authenticate();

  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 VocabCourse.findAll({
    where: { languageId: bisayaLanguage.id }
  });

  let addedLessons = 0;

  for (const course of courses) {
    await course.update({
      title: 'Bisaya für Familien - Alltag & Stabilisierung',
      description: 'Lerne Bisaya (Cebuano) praxisnah für den Familienalltag. Der Pfad verbindet Schnellstart, Alltagsmodule und Stabilisierungsblöcke mit Spiralwiederholung, Fehlertraining und freier Produktion.'
    });

    for (const lessonData of BISAYA_PHASE5_LESSONS) {
      const existing = await VocabCourseLesson.findOne({
        where: {
          courseId: course.id,
          lessonNumber: lessonData.num
        }
      });

      if (existing) {
        continue;
      }

      const didactics = BISAYA_PHASE5_DIDACTICS[lessonData.title] || {};
      const pedagogy = getBisayaLessonPedagogy(lessonData.num) || {};

      await VocabCourseLesson.create({
        courseId: course.id,
        chapterId: null,
        lessonNumber: lessonData.num,
        title: lessonData.title,
        description: lessonData.desc,
        weekNumber: lessonData.week,
        dayNumber: lessonData.day,
        lessonType: lessonData.type,
        culturalNotes: lessonData.cultural,
        learningGoals: didactics.learningGoals || [],
        corePatterns: didactics.corePatterns || [],
        grammarFocus: didactics.grammarFocus || [],
        speakingPrompts: didactics.speakingPrompts || [],
        practicalTasks: didactics.practicalTasks || [],
        targetMinutes: lessonData.targetMin,
        targetScorePercent: lessonData.targetScore,
        requiresReview: lessonData.review,
        didacticMode: pedagogy.didacticMode || null,
        phaseLabel: pedagogy.phaseLabel || null,
        blockNumber: pedagogy.blockNumber ?? null,
        difficultyWeight: pedagogy.difficultyWeight ?? null,
        newUnitTarget: pedagogy.newUnitTarget ?? null,
        reviewWeight: pedagogy.reviewWeight ?? null,
        isIntensiveReview: Boolean(pedagogy.isIntensiveReview)
      });

      addedLessons++;
      console.log(`✅ Kurs ${course.id}: Lektion ${lessonData.num} - ${lessonData.title} ergänzt`);
    }
  }

  console.log(`\n🎉 Phase 5 vorbereitet.`);
  console.log(`   Kurse: ${courses.length}`);
  console.log(`   Neue Lektionen ergänzt: ${addedLessons}`);
  console.log('   Das Einspielen in die DB kann später gesammelt mit den übrigen Phasen erfolgen.');
}

extendBisayaCoursePhase5()
  .then(() => {
    sequelize.close();
    process.exit(0);
  })
  .catch((error) => {
    console.error('❌ Fehler:', error);
    sequelize.close();
    process.exit(1);
  });