'use strict';

/** Repairs the already generated exercise that rendered as a bare blank. */
module.exports = {
  async up(queryInterface) {
    await queryInterface.sequelize.query(`
      UPDATE community.vocab_grammar_exercise AS exercise
      SET question_data = '{"type":"gap_fill","text":"{gap} ka padulong?","gaps":1}'::jsonb,
          answer_data = '{"type":"gap_fill","answers":["Asa"]}'::jsonb,
          explanation = 'Das Kernmuster lautet: "Asa ka padulong?"'
      FROM community.vocab_course_lesson AS lesson
      WHERE exercise.lesson_id = lesson.id
        AND lesson.lesson_number = 46
        AND lesson.title = 'Fragen im Alltag vertiefen'
        AND exercise.title = 'Fragen im Alltag vertiefen: Kernmuster ergänzen'
        AND exercise.question_data->>'text' = '{gap}';
    `);
  },
  async down() {
    // The old exercise has no useful learner-visible prompt and is not restored.
  }
};