implemented a lot of features

database/migrations/1768620765010_spot_listings.ts

@@ -0,0 +1,41 @@
+import { BaseSchema } from '@adonisjs/lucid/schema'
+
+/**
+ * Spot listings (CONCEPT.md D29): old spots become a release without files
+ * (source `spot`), whose NZB is fetched when first downloaded. Search shows
+ * releases with files or spot listings, so the partial release indexes
+ * cover both. Spots are verified from their overview when fetched.
+ */
+const VISIBLE = `(file_count > 0 OR source = 'spot')`
+const INDEXES: [name: string, definition: string][] = [
+  ['releases_name_trgm', `USING gin (name gin_trgm_ops)`],
+  ['releases_contents_trgm', `USING gin ((contents::text) gin_trgm_ops)`],
+  ['releases_posted_at_idx', `(posted_at DESC NULLS LAST)`],
+  ['releases_size_index', `(size)`],
+  ['releases_file_count_index', `(file_count)`],
+  ['releases_complete_idx', `(complete)`],
+  ['releases_category_idx', `(category)`],
+]
+
+export default class extends BaseSchema {
+  static disableTransactions = true
+
+  async up() {
+    await this.db.rawQuery(`ALTER TABLE spots ADD COLUMN IF NOT EXISTS verified boolean`)
+    await this.swap(VISIBLE)
+  }
+
+  async down() {
+    await this.swap('file_count > 0')
+    await this.db.rawQuery(`ALTER TABLE spots DROP COLUMN IF EXISTS verified`)
+  }
+
+  private async swap(predicate: string) {
+    for (const [name, definition] of INDEXES) {
+      await this.db.rawQuery(`DROP INDEX CONCURRENTLY IF EXISTS ${name}_next`)
+      await this.db.rawQuery(`CREATE INDEX CONCURRENTLY ${name}_next ON releases ${definition} WHERE ${predicate}`)
+      await this.db.rawQuery(`DROP INDEX CONCURRENTLY IF EXISTS ${name}`)
+      await this.db.rawQuery(`ALTER INDEX ${name}_next RENAME TO ${name}`)
+    }
+  }
+}