import { BaseSchema } from '@adonisjs/lucid/schema'

/**
 * Listed spots (D29) were only read from their overview: no description, no
 * NZB, so neither a password in the spot's text nor the NZB's own
 * `<meta type="password">` was known (LOG.md 2026-10-08 (10)). nzb_read_at:
 * when the spot's article and NZB were read for that (SpotService.readListing),
 * also set while a reader holds it. The index finds the ones still to read,
 * newest first.
 */
export default class extends BaseSchema {
  async up() {
    await this.db.rawQuery(`ALTER TABLE spots ADD COLUMN IF NOT EXISTS nzb_read_at timestamptz`)
    await this.db.rawQuery(
      `CREATE INDEX IF NOT EXISTS spots_listing_unread_idx ON spots (posted_at DESC) WHERE status = 'listed' AND nzb_read_at IS NULL`
    )
  }

  async down() {
    await this.db.rawQuery(`DROP INDEX IF EXISTS spots_listing_unread_idx`)
    await this.db.rawQuery(`ALTER TABLE spots DROP COLUMN IF EXISTS nzb_read_at`)
  }
}