#!/usr/bin/env node

import { sequelize } from '../utils/sequelize.js';
import VocabCourse from '../models/community/vocab_course.js';
import VocabCourseLesson from '../models/community/vocab_course_lesson.js';
import { GERMAN_FOR_BISAYA_PHASE4_DIDACTICS, GERMAN_FOR_BISAYA_PHASE4_LESSONS } from './german-for-bisaya-phase4-extension.js';
import {
  getGermanForBisayaLessonPedagogy,
  getGermanForBisayaProgressTargets
} from './german-for-bisaya-phase2-pedagogy.js';

async function getLanguageId(name) {
  const [language] = await sequelize.query(
    `SELECT id FROM community.vocab_language WHERE name = :name LIMIT 1`,
    { replacements: { name }, type: sequelize.QueryTypes.SELECT }
  );
  if (!language) throw new Error(`Sprache "${name}" nicht gefunden`);
  return Number(language.id);
}

async function extendGermanForBisayaPhase4() {
  await sequelize.authenticate();
  const germanLanguageId = await getLanguageId('Deutsch');
  const bisayaLanguageId = await getLanguageId('Bisaya');

  const courses = await VocabCourse.findAll({
    where: {
      languageId: germanLanguageId,
      nativeLanguageId: bisayaLanguageId
    }
  });

  for (const course of courses) {
    if (!String(course.title || '').startsWith('Deutsch für Bisaya-Lernende')) continue;

    for (const lessonData of GERMAN_FOR_BISAYA_PHASE4_LESSONS) {
      const existing = await VocabCourseLesson.findOne({
        where: { courseId: course.id, lessonNumber: lessonData.num }
      });
      if (existing) continue;

      const didactics = GERMAN_FOR_BISAYA_PHASE4_DIDACTICS[lessonData.title] || {};
      const pedagogy = getGermanForBisayaLessonPedagogy(lessonData.num, lessonData.type, lessonData.title);
      const progressTargets = getGermanForBisayaProgressTargets(lessonData, pedagogy);

      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,
        didacticMode: pedagogy.didacticMode,
        phaseLabel: pedagogy.phaseLabel,
        blockNumber: pedagogy.blockNumber,
        difficultyWeight: pedagogy.difficultyWeight,
        newUnitTarget: pedagogy.newUnitTarget,
        reviewWeight: pedagogy.reviewWeight,
        isIntensiveReview: pedagogy.isIntensiveReview,
        culturalNotes: lessonData.cultural,
        learningGoals: didactics.learningGoals || null,
        corePatterns: didactics.corePatterns || null,
        grammarFocus: didactics.grammarFocus || null,
        speakingPrompts: didactics.speakingPrompts || null,
        practicalTasks: didactics.practicalTasks || null,
        targetMinutes: progressTargets.targetMinutes,
        targetScorePercent: progressTargets.targetScorePercent,
        requiresReview: lessonData.review
      });
    }

    course.title = 'Deutsch für Bisaya-Lernende - Alltagspfad';
    course.description = '12 Wochen Deutsch-Lernpfad aus Sicht von Bisaya-Lernenden mit Schnellstart, Alltag und gezieltem Fehlertraining.';
    await course.save();
    console.log(`Phase 4 erweitert: ${course.title} (ID: ${course.id})`);
  }
}

if (import.meta.url === `file://${process.argv[1]}`) {
  extendGermanForBisayaPhase4()
    .then(() => process.exit(0))
    .catch((error) => {
      console.error(error);
      process.exit(1);
    });
}