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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef WEBKIT_FILEAPI_LOCAL_FILE_SYSTEM_TEST_HELPER_H_
#define WEBKIT_FILEAPI_LOCAL_FILE_SYSTEM_TEST_HELPER_H_

#include <string>

#include "base/file_path.h"
#include "base/memory/ref_counted.h"
#include "googleurl/src/gurl.h"
#include "webkit/fileapi/file_system_types.h"
#include "webkit/fileapi/file_system_url.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/quota/quota_types.h"

namespace base {
class FilePath;
}

namespace quota {
class QuotaManagerProxy;
}

namespace fileapi {

class FileSystemContext;
class FileSystemFileUtil;
class FileSystemOperationContext;
class LocalFileSystemOperation;

// Filesystem test helper class that encapsulates test environment for
// a given {origin, type} pair.  This helper only works for sandboxed
// file systems (Temporary, Persistent or Test types).
class LocalFileSystemTestOriginHelper {
 public:
  LocalFileSystemTestOriginHelper(const GURL& origin, FileSystemType type);
  LocalFileSystemTestOriginHelper();
  ~LocalFileSystemTestOriginHelper();

  void SetUp(const base::FilePath& base_dir);
  // If you want to use more than one LocalFileSystemTestOriginHelper in
  // a single base directory, they have to share a context, so that they don't
  // have multiple databases fighting over the lock to the origin directory
  // [deep down inside ObfuscatedFileUtil].
  void SetUp(FileSystemContext* file_system_context);
  void SetUp(const base::FilePath& base_dir,
             bool unlimited_quota,
             quota::QuotaManagerProxy* quota_manager_proxy);
  void TearDown();

  base::FilePath GetOriginRootPath() const;
  base::FilePath GetLocalPath(const base::FilePath& path);
  base::FilePath GetLocalPathFromASCII(const std::string& path);

  // Returns empty path if filesystem type is neither temporary nor persistent.
  base::FilePath GetUsageCachePath() const;

  FileSystemURL CreateURL(const base::FilePath& path) const;
  FileSystemURL CreateURLFromUTF8(const std::string& utf8) const {
    return CreateURL(base::FilePath::FromUTF8Unsafe(utf8));
  }

  // Helper methods for same-FileUtil copy/move.
  base::PlatformFileError SameFileUtilCopy(
      FileSystemOperationContext* context,
      const FileSystemURL& src,
      const FileSystemURL& dest) const;
  base::PlatformFileError SameFileUtilMove(
      FileSystemOperationContext* context,
      const FileSystemURL& src,
      const FileSystemURL& dest) const;

  // This returns cached usage size returned by QuotaUtil.
  int64 GetCachedOriginUsage() const;

  // This doesn't work with OFSFU.
  int64 ComputeCurrentOriginUsage() const;

  int64 ComputeCurrentDirectoryDatabaseUsage() const;

  LocalFileSystemOperation* NewOperation();
  FileSystemOperationContext* NewOperationContext();

  FileSystemContext* file_system_context() const {
    return file_system_context_.get();
  }

  const GURL& origin() const { return origin_; }
  FileSystemType type() const { return type_; }
  quota::StorageType storage_type() const {
    return FileSystemTypeToQuotaStorageType(type_);
  }
  FileSystemFileUtil* file_util() const { return file_util_; }

 private:
  void SetUpFileUtil();

  scoped_refptr<FileSystemContext> file_system_context_;
  const GURL origin_;
  const FileSystemType type_;
  FileSystemFileUtil* file_util_;
};

}  // namespace fileapi

#endif  // WEBKIT_FILEAPI_LOCAL_FILE_SYSTEM_TEST_HELPER_H_