feat(F-048): completed feature

project/migrations/026_fuzzy_search.cjs

@@ -1,83 +1,44 @@
 /**
- * Migration 026: Fuzzy search with trigram similarity (pg_trgm)
+ * Migration 026: Fuzzy search with trigram similarity (pg_trgm).
  *
- * - Enables pg_trgm extension for Levenshtein-like fuzzy matching
- * - Creates GIN indexes on product name/description for fast trigram similarity
- * - Adds similarity index on brands and categories for term suggestions
- *
- * Run: node migrations/026_fuzzy_search.js
+ * This is an ordered node-pg-migrate migration. It must not open its own
+ * connection or execute work while the migration module is being loaded.
  */
 
-const { Pool } = require('pg');
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+exports.up = (pgm) => {
+  pgm.sql('CREATE EXTENSION IF NOT EXISTS pg_trgm');
 
-const pool = new Pool({
-  connectionString: process.env.DATABASE_URL || 'postgres://mdv:mdv_dev_only@localhost:5432/mercadodevida',
-});
+  pgm.sql(`
+    CREATE INDEX IF NOT EXISTS catalog_products_name_trgm_idx
+    ON catalog_products
+    USING GIN (name gin_trgm_ops)
+  `);
 
-async function migrate() {
-  const client = await pool.connect();
+  pgm.sql(`
+    CREATE INDEX IF NOT EXISTS catalog_products_description_trgm_idx
+    ON catalog_products
+    USING GIN (description gin_trgm_ops)
+  `);
 
-  try {
-    await client.query('BEGIN');
+  pgm.sql(`
+    CREATE INDEX IF NOT EXISTS brands_brands_name_trgm_idx
+    ON brands_brands
+    USING GIN (name gin_trgm_ops)
+  `);
 
-    // 1. Enable pg_trgm extension
-    await client.query(`
-      CREATE EXTENSION IF NOT EXISTS pg_trgm;
-    `);
-    console.log('✓ pg_trgm extension enabled');
+  pgm.sql(`
+    CREATE INDEX IF NOT EXISTS categories_categories_name_trgm_idx
+    ON categories_categories
+    USING GIN (name gin_trgm_ops)
+  `);
+};
 
-    // 2. GIN index on product name for trigram similarity
-    await client.query(`
-      CREATE INDEX IF NOT EXISTS catalog_products_name_trgm_idx
-      ON catalog_products
-      USING GIN (name gin_trgm_ops);
-    `);
-    console.log('✓ catalog_products name trigram index');
-
-    // 3. GIN index on product description
-    await client.query(`
-      CREATE INDEX IF NOT EXISTS catalog_products_description_trgm_idx
-      ON catalog_products
-      USING GIN (description gin_trgm_ops);
-    `);
-    console.log('✓ catalog_products description trigram index');
-
-    // 4. GIN index on brand names (for suggestions)
-    await client.query(`
-      CREATE INDEX IF NOT EXISTS brands_brands_name_trgm_idx
-      ON brands_brands
-      USING GIN (name gin_trgm_ops);
-    `);
-    console.log('✓ brands_brands name trigram index');
-
-    // 5. GIN index on category names (for suggestions)
-    await client.query(`
-      CREATE INDEX IF NOT EXISTS categories_categories_name_trgm_idx
-      ON categories_categories
-      USING GIN (name gin_trgm_ops);
-    `);
-    console.log('✓ categories_categories name trigram index');
-
-    // 6. Record migration
-    await client.query(`
-      INSERT INTO pgmigrations (name, run_on)
-      VALUES ('026_fuzzy_search', NOW())
-      ON CONFLICT (name) DO NOTHING;
-    `);
-    console.log('✓ Migration recorded');
-
-    await client.query('COMMIT');
-    console.log('\n✅ Migration 026 complete: fuzzy search indexes created');
-  } catch (err) {
-    await client.query('ROLLBACK');
-    throw err;
-  } finally {
-    client.release();
-    await pool.end();
-  }
-}
-
-migrate().catch((err) => {
-  console.error('❌ Migration failed:', err.message);
-  process.exit(1);
-});
+/** @param {import('node-pg-migrate').MigrationBuilder} pgm */
+exports.down = (pgm) => {
+  pgm.sql('DROP INDEX IF EXISTS categories_categories_name_trgm_idx');
+  pgm.sql('DROP INDEX IF EXISTS brands_brands_name_trgm_idx');
+  pgm.sql('DROP INDEX IF EXISTS catalog_products_description_trgm_idx');
+  pgm.sql('DROP INDEX IF EXISTS catalog_products_name_trgm_idx');
+  pgm.sql('DROP EXTENSION IF EXISTS pg_trgm');
+};