// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "starboard/directory.h"

#include <dirent.h>
#include <errno.h>

#include "starboard/file.h"
#include "starboard/shared/iso/directory_internal.h"

SbDirectory SbDirectoryOpen(const char* path, SbFileError* out_error) {
  if (!path) {
    if (out_error) {
      *out_error = kSbFileErrorNotFound;
    }
    return kSbDirectoryInvalid;
  }

  DIR* dir = opendir(path);
  if (!dir) {
    if (out_error) {
      switch (errno) {
        case EACCES:
          *out_error = kSbFileErrorAccessDenied;
          break;
        case ELOOP:
          *out_error = kSbFileErrorFailed;
          break;
        case ENAMETOOLONG:
          *out_error = kSbFileErrorInvalidOperation;
          break;
        case ENOENT:
          *out_error = kSbFileErrorNotFound;
          break;
        case ENOTDIR:
          *out_error = kSbFileErrorNotADirectory;
          break;
        case EMFILE:
        case ENFILE:
          *out_error = kSbFileErrorTooManyOpened;
          break;
      }
    }

    return kSbDirectoryInvalid;
  }

  SbDirectory result = new SbDirectoryPrivate();
  if (!result) {
    closedir(dir);
    if (out_error) {
      *out_error = kSbFileErrorNoMemory;
    }
    return kSbDirectoryInvalid;
  }

  result->directory = dir;
  if (out_error) {
    *out_error = kSbFileOk;
  }
  return result;
}