/* Copyright libuv project contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#if defined(__unix__) || defined(__POSIX__) || \

    defined(__APPLE__) || defined(_AIX) || defined(__MVS__)

#include <unistd.h> /* unlink, etc. */

#else

# include <direct.h>

# include <io.h>

# define unlink _unlink

#endif

static const char fixture[] = "test/fixtures/load_error.node";

static const char dst[] = "test_file_dst";

static int result_check_count;

static void fail_cb(uv_fs_t* req) {

  FATAL("fail_cb should not have been called");

}

static void handle_result(uv_fs_t* req) {

  uv_fs_t stat_req;

  uint64_t size;

  uint64_t mode;

  int r;

  ASSERT(req->fs_type == UV_FS_COPYFILE);

  ASSERT(req->result == 0);

  /* Verify that the file size and mode are the same. */

  r = uv_fs_stat(NULL, &stat_req, req->path, NULL);

  ASSERT(r == 0);

  size = stat_req.statbuf.st_size;

  mode = stat_req.statbuf.st_mode;

  uv_fs_req_cleanup(&stat_req);

  r = uv_fs_stat(NULL, &stat_req, dst, NULL);

  ASSERT(r == 0);

  ASSERT(stat_req.statbuf.st_size == size);

  ASSERT(stat_req.statbuf.st_mode == mode);

  uv_fs_req_cleanup(&stat_req);

  uv_fs_req_cleanup(req);

  result_check_count++;

}

static void touch_file(const char* name, unsigned int size) {

  uv_file file;

  uv_fs_t req;

  uv_buf_t buf;

  int r;

  unsigned int i;

  r = uv_fs_open(NULL, &req, name, O_WRONLY | O_CREAT | O_TRUNC,

                 S_IWUSR | S_IRUSR, NULL);

  uv_fs_req_cleanup(&req;;

  ASSERT(r >= 0);

  file = r;

  buf = uv_buf_init("a", 1);

  /* Inefficient but simple. */

  for (i = 0; i < size; i++) {

    r = uv_fs_write(NULL, &req, file, &buf, 1, i, NULL);

    uv_fs_req_cleanup(&req;;

    ASSERT(r >= 0);

  }

  r = uv_fs_close(NULL, &req, file, NULL);

  uv_fs_req_cleanup(&req;;

  ASSERT(r == 0);

}

TEST_IMPL(fs_copyfile) {

  const char src[] = "test_file_src";

  uv_loop_t* loop;

  uv_fs_t req;

  int r;

  loop = uv_default_loop();

  /* Fails with EINVAL if bad flags are passed. */

  r = uv_fs_copyfile(NULL, &req, src, dst, -1, NULL);

  ASSERT(r == UV_EINVAL);

  uv_fs_req_cleanup(&req;;

  /* Fails with ENOENT if source does not exist. */

  unlink(src);

  unlink(dst);

  r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);

  ASSERT(req.result == UV_ENOENT);

  ASSERT(r == UV_ENOENT);

  uv_fs_req_cleanup(&req;;

  /* The destination should not exist. */

  r = uv_fs_stat(NULL, &req, dst, NULL);

  ASSERT(r != 0);

  uv_fs_req_cleanup(&req;;

  /* Copies file synchronously. Creates new file. */

  unlink(dst);

  r = uv_fs_copyfile(NULL, &req, fixture, dst, 0, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  /* Copies a file of size zero. */

  unlink(dst);

  touch_file(src, 0);

  r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  /* Copies file synchronously. Overwrites existing file. */

  r = uv_fs_copyfile(NULL, &req, fixture, dst, 0, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  /* Fails to overwrites existing file. */

  r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_EXCL, NULL);

  ASSERT(r == UV_EEXIST);

  uv_fs_req_cleanup(&req;;

  /* Truncates when an existing destination is larger than the source file. */

  touch_file(src, 1);

  r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  /* Copies a larger file. */

  unlink(dst);

  touch_file(src, 4096 * 2);

  r = uv_fs_copyfile(NULL, &req, src, dst, 0, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  unlink(src);

  /* Copies file asynchronously */

  unlink(dst);

  r = uv_fs_copyfile(loop, &req, fixture, dst, 0, handle_result);

  ASSERT(r == 0);

  ASSERT(result_check_count == 5);

  uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(result_check_count == 6);

  /* If the flags are invalid, the loop should not be kept open */

  unlink(dst);

  r = uv_fs_copyfile(loop, &req, fixture, dst, -1, fail_cb);

  ASSERT(r == UV_EINVAL);

  uv_run(loop, UV_RUN_DEFAULT);

  /* Copies file using UV_FS_COPYFILE_FICLONE. */

  unlink(dst);

  r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_FICLONE, NULL);

  ASSERT(r == 0);

  handle_result(&req;;

  /* Copies file using UV_FS_COPYFILE_FICLONE_FORCE. */

  unlink(dst);

  r = uv_fs_copyfile(NULL, &req, fixture, dst, UV_FS_COPYFILE_FICLONE_FORCE,

                     NULL);

  ASSERT(r == 0 || r == UV_ENOSYS || r == UV_ENOTSUP);

  if (r == 0)

    handle_result(&req;;

  unlink(dst); /* Cleanup */

  return 0;

}