/* eslint-disable */
/** 全文检索：用 PG tsvector 做相似历史项目检索。 */

exports.up = (pgm) => {
  pgm.sql(`ALTER TABLE assessments ADD COLUMN IF NOT EXISTS tsv tsvector;`);
  pgm.sql(`UPDATE assessments SET tsv = to_tsvector('simple', COALESCE(assessment->>'projectDescription','') || ' ' || COALESCE(assessment->>'businessType','') || ' ' || COALESCE(assessment->>'industry',''));`);
  pgm.sql(`CREATE INDEX IF NOT EXISTS idx_assessments_tsv ON assessments USING gin(tsv);`);
};

exports.down = (pgm) => {
  pgm.sql(`DROP INDEX IF EXISTS idx_assessments_tsv;`);
  pgm.sql(`ALTER TABLE assessments DROP COLUMN IF EXISTS tsv;`);
};