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

/**
 * par2 set id per listed file (traceability; see LOG.md 2026-09-28 for the
 * cross-post merges it helps diagnose), and a stricter "random name" rule:
 * long letter-only tokens with many capitals count as random too
 * (e.g. RmISakytFwXSCEzjVEpaKk).
 */
export default class extends BaseSchema {
  async up() {
    this.schema.alterTable('release_files', (table) => {
      table.string('set_id', 32)
    })
    this.defer(async (db) => {
      await db.rawQuery(`
        CREATE OR REPLACE FUNCTION is_readable_name(name text) RETURNS boolean IMMUTABLE LANGUAGE sql AS $$
          SELECT name IS NOT NULL AND NOT (
            (name_stem(name) ~ '^[A-Za-z0-9]{16,}$' AND name_stem(name) ~ '[a-z]' AND name_stem(name) ~ '[A-Z]'
              AND (name_stem(name) ~ '\\d' OR length(regexp_replace(name_stem(name), '[^A-Z]', '', 'g')) >= 6))
            OR name_stem(name) ~* '^[0-9a-f]{16,}$')
        $$`)
    })
  }

  async down() {
    this.schema.alterTable('release_files', (table) => table.dropColumn('set_id'))
  }
}