/*
  Copyright (c) 2015 Anton Titov.

  Copyright (c) 2015 pCloud Ltd.  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met: Redistributions of source code must retain the above
  copyright notice, this list of conditions and the following
  disclaimer.  Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the following
  disclaimer in the documentation and/or other materials provided with
  the distribution.  Neither the name of pCloud Ltd nor the names of
  its contributors may be used to endorse or promote products derived
  from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL pCloud Ltd BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _PSYNC_ASYNCNET_H
#define _PSYNC_ASYNCNET_H

#include "psynclib.h"

#define PSYNC_ASYNC_ERR_FLAG_PERM        0x01 // the error is permanent(ish) and there is no reason to retry
#define PSYNC_ASYNC_ERR_FLAG_RETRY_AS_IS 0x02 // same request may succeed in the future if retried as is
#define PSYNC_ASYNC_ERR_FLAG_SUCCESS     0x04 // like no action performed because of no need - file already exists and so on

#define PSYNC_ASYNC_ERROR_NET       1
#define PSYNC_ASYNC_ERROR_FILE      2
#define PSYNC_ASYNC_ERROR_DISK_FULL 3
#define PSYNC_ASYNC_ERROR_IO        4
#define PSYNC_ASYNC_ERROR_CHECKSUM  5

#define PSYNC_SERVER_ERROR_TOO_BIG  102
#define PSYNC_SERVER_ERROR_NOT_MOD  104

typedef struct {
  uint64_t size;
  uint64_t hash;
  unsigned char sha1hex[40];
} psync_async_file_result_t;

typedef struct {
  uint32_t error;
  uint32_t errorflags;
  union {
    psync_async_file_result_t file;
  };
} psync_async_result_t;

typedef void (*psync_async_callback_t)(void *, psync_async_result_t *);

/* Important! The interface typically expect all passed pointers to be alive until the completion callback is called.
 */

void psync_async_stop();
int psync_async_download_file(psync_fileid_t fileid, const char *localpath, psync_async_callback_t cb, void *cbext);
int psync_async_download_file_if_changed(psync_fileid_t fileid, const char *localpath, uint64_t size, const void *sha1hex, psync_async_callback_t cb, void *cbext);

#endif