cachefile

var Cache = sync.OnceValue(func() *CacheFile {
	options := bbolt.Options{Timeout: time.Second}
	db, err := bbolt.Open(C.Path.Cache(), fileMode, &options)
	switch err {
	case bbolt.ErrInvalid, bbolt.ErrChecksum, bbolt.ErrVersionMismatch:
		if err = os.Remove(C.Path.Cache()); err != nil {
			log.Warn().Err(err).Msg("[CacheFile] remove invalid cache file failed")
			break
		}
		log.Info().Msg("[CacheFile] remove invalid cache file and create new one")
		db, err = bbolt.Open(C.Path.Cache(), fileMode, &options)
	}
	if err != nil {
		log.Warn().Err(err).Msg("[CacheFile] open cache file failed")
	}

	return &CacheFile{
		DB: db,
	}
})