'use strict';

const OLD_QUESTION = 'Erzähle einen Tagesplan mit drei Schritten und einem Wunsch.';
const REPAIRED_QUESTION = 'Schreibe vier kurze Sätze auf Bisaya. Verwende dabei alle diese Bausteine: Una, Pagkahuman, Unya und Gusto ko nga.';
const KEYWORDS = ['una', 'pagkahuman', 'unya', 'gusto ko nga'];
const MODEL_ANSWER = 'Una, moadto ko sa merkado. Pagkahuman, kuhaon nako ang bata. Unya, mouli mi sa balay. Gusto ko nga magkita ta ugma.';

module.exports = {
  async up(queryInterface) {
    await queryInterface.sequelize.transaction(async (transaction) => {
      // This was an open-ended production prompt, but the checker required four
      // hidden words. Make both the expected language and the four criteria
      // explicit, while still accepting every answer that fulfils them.
      await queryInterface.sequelize.query(`
        UPDATE community.vocab_grammar_exercise AS exercise
        SET question_data = JSONB_SET(
              JSONB_SET(
                JSONB_SET(exercise.question_data, '{question}', TO_JSONB(CAST(:repairedQuestion AS text))),
                '{keywords}', CAST(:keywords AS jsonb)
              ),
              '{minKeywordMatches}', '4'::jsonb
            ),
            answer_data = JSONB_SET(
              JSONB_SET(
                JSONB_SET(COALESCE(exercise.answer_data, '{}'::jsonb), '{modelAnswer}', TO_JSONB(CAST(:modelAnswer AS text))),
                '{keywords}', CAST(:keywords AS jsonb)
              ),
              '{minKeywordMatches}', '4'::jsonb
            )
        FROM community.vocab_course_lesson AS lesson
        WHERE exercise.lesson_id = lesson.id
          AND (lesson.id = 39 OR (lesson.course_id = 1 AND lesson.lesson_number = 39))
          AND exercise.question_data->>'type' = 'situational_response'
          AND exercise.question_data->>'question' = :oldQuestion;
      `, {
        replacements: {
          oldQuestion: OLD_QUESTION,
          repairedQuestion: REPAIRED_QUESTION,
          keywords: JSON.stringify(KEYWORDS),
          modelAnswer: MODEL_ANSWER
        },
        transaction
      });
    });
  },

  async down() {
    // Keep the unambiguous exercise wording once deployed.
  }
};