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

/**
 * name_stem(): strip a 3-digit split suffix only after a file extension
 * (x.mkv.001), not codec names like H.264 / H.265, matching lib/release.
 */
export default class extends BaseSchema {
  async up() {
    this.defer(async (db) => {
      await db.rawQuery(`
        CREATE OR REPLACE FUNCTION name_stem(name text) RETURNS text IMMUTABLE LANGUAGE sql AS $$
          SELECT regexp_replace(
            regexp_replace(name, '(\\.(7z|zip|rar|tar|mkv|mp4|avi|m4v|ts|m2ts|iso|img|bin|vob))\\.\\d{3}$', '\\1', 'i'),
            '(\\.(part\\d+\\.rar|r\\d{2,3}|rar|vol\\d+[+-]\\d+\\.par2|par2|7z|zip|nfo|sfv|nzb|tar|zst|gz|xz|mkv|mp4|avi|m4v|ts|iso|img|flac|mp3|epub|pdf|jpg|png|srt|sub|idx|ass|ssa))+$',
            '', 'i')
        $$`)
    })
  }

  async down() {}
}