/**
 * Enable pg_trgm + GIN index on cards.name for Layer-1 OCR text matching.
 *
 * @type {import('node-pg-migrate').ColumnDefinitions | undefined}
 */
export const shorthands = undefined;

/**
 * @param {import('node-pg-migrate').MigrationBuilder} pgm
 */
export const up = (pgm) => {
  pgm.sql(`
    CREATE EXTENSION IF NOT EXISTS pg_trgm;

    CREATE INDEX IF NOT EXISTS idx_cards_name_trgm
      ON cards USING gin (name gin_trgm_ops);
  `);
};

/**
 * @param {import('node-pg-migrate').MigrationBuilder} pgm
 */
export const down = (pgm) => {
  throw new Error('Down migration not supported for add-pg-trgm-card-name-index');
};