'use strict';

/** Removes counting exercise instructions accidentally stored as SRS cards. */
module.exports = {
  async up(queryInterface) {
    await queryInterface.sequelize.query(`
      DELETE FROM community.vocab_srs_item
      WHERE course_id = 1
        AND lower(trim(learning)) ~ '^(zähle|zaehle)';
    `);
  },

  async down() {
    // The invalid generated SRS cards must not be restored.
  }
};