export { P2P_BASE64_CHUNK_SIZE_BYTES as FILE_CHUNK_SIZE_BYTES } from '../../../../shared-kernel/p2p-transfer.constants';

/**
 * EWMA smoothing weight for the previous speed estimate.
 * The complementary weight is applied to the latest sample.
 */
export const ATTACHMENT_TRANSFER_EWMA_PREVIOUS_WEIGHT = 0.7;
export const ATTACHMENT_TRANSFER_EWMA_CURRENT_WEIGHT = 1 - ATTACHMENT_TRANSFER_EWMA_PREVIOUS_WEIGHT;

/** Fallback MIME type when none is provided by the sender. */
export const DEFAULT_ATTACHMENT_MIME_TYPE = 'application/octet-stream';

/** localStorage key used by the legacy attachment store during migration. */
export const LEGACY_ATTACHMENTS_STORAGE_KEY = 'metoyou_attachments';

/** i18n keys for user-facing attachment transfer errors. */
export const NO_CONNECTED_PEERS_REQUEST_ERROR_KEY = 'attachment.errors.noConnectedPeers';
export const FILE_NOT_FOUND_REQUEST_ERROR_KEY = 'attachment.errors.fileNotFound';
export const UPLOADER_LOCAL_FILE_MISSING_ERROR_KEY = 'attachment.errors.uploaderLocalMissing';
export const ATTACHMENT_PREPARE_DOWNLOAD_FAILED_KEY = 'attachment.errors.prepareDownloadFailed';
export const ATTACHMENT_CHUNKS_OUT_OF_ORDER_KEY = 'attachment.errors.chunksOutOfOrder';
export const ATTACHMENT_WRITE_DOWNLOAD_FAILED_KEY = 'attachment.errors.writeDownloadFailed';
export const ATTACHMENT_OPEN_DOWNLOAD_FAILED_KEY = 'attachment.errors.openDownloadFailed';
export const ATTACHMENT_DOWNLOAD_FAILED_KEY = 'attachment.errors.downloadFailed';
export const ATTACHMENT_FILE_TOO_LARGE_KEY = 'attachment.errors.fileTooLarge';