'use strict';

/**
 * The generated exercise for "Wege & Verkehr" used a bare `{gap}` while its
 * instruction asked for a route description.  A gap must be embedded in the
 * route so the learner can infer the expected direction from the context.
 */
module.exports = {
  async up(queryInterface) {
    await queryInterface.sequelize.query(`
      UPDATE community.vocab_grammar_exercise AS exercise
      SET title = 'Wege & Verkehr: Satz im Kontext ergänzen',
          question_data = '{"type":"gap_fill","text":"{gap}. Tuo. Wala. Duol ra.","gaps":1}'::jsonb,
          answer_data = '{"type":"gap_fill","answers":["Diretso"]}'::jsonb,
          explanation = 'Die vollständige Wegbeschreibung lautet: "Diretso. Tuo. Wala. Duol ra."'
      FROM community.vocab_course_lesson AS lesson
      WHERE exercise.lesson_id = lesson.id
        AND (lesson.id = 1532 OR (lesson.course_id = 1 AND lesson.lesson_number = 55))
        AND lesson.title = 'Wege & Verkehr'
        AND exercise.question_data->>'type' = 'gap_fill'
        AND exercise.question_data->>'text' = '{gap}'
        AND exercise.answer_data->'answers' @> '["tuo"]'::jsonb;
    `);
  },

  async down() {
    // Do not restore the context-free task.
  }
};