Function uploadFileToRemote

packages/core/src/sync/sync-files.ts:87–111

(
  backend: ISyncBackend,
  remotePath: string,
  localPath: string,
  onProgress?: (loaded: number, total: number) => void,
)

}

async function uploadFileToRemote(
  backend: ISyncBackend,
  remotePath: string,
  localPath: string,
  onProgress?: (loaded: number, total: number) => void,
): Promise<number | null> {
  if (backend.putFile) {
    try {
      await backend.putFile(remotePath, localPath, onProgress);
      return null;
    } catch (e) {
      if (!isDirectFileTransferUnsupported(e)) throw e;
      console.warn(
        `[Sync] Direct upload unsupported for ${remotePath}; falling back to buffered upload`,
      );
    }
  }

  const adapter = getSyncAdapter();
  const data = await adapter.readFileBytes(localPath);
  onProgress?.(0, data.length);
  await backend.put(remotePath, data);
  onProgress?.(data.length, data.length);
  return data.length;
}

async function downloadRemoteFileToPath(
  backend: ISyncBackend,