// Copyright (c) 2011 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.

#include "webkit/fileapi/file_system_test_helper.h"

#include "base/file_util.h"
#include "base/message_loop.h"
#include "base/message_loop_proxy.h"
#include "googleurl/src/gurl.h"
#include "webkit/fileapi/file_system_context.h"
#include "webkit/fileapi/file_system_operation.h"
#include "webkit/fileapi/file_system_operation_context.h"
#include "webkit/fileapi/file_system_usage_cache.h"
#include "webkit/fileapi/file_system_util.h"
#include "webkit/fileapi/sandbox_mount_point_provider.h"
#include "webkit/quota/mock_special_storage_policy.h"

namespace fileapi {

FileSystemTestOriginHelper::FileSystemTestOriginHelper(
    const GURL& origin, FileSystemType type)
    : origin_(origin), type_(type), file_util_(NULL) {
}

FileSystemTestOriginHelper::FileSystemTestOriginHelper()
    : origin_(GURL("http://foo.com")),
      type_(kFileSystemTypeTemporary),
      file_util_(NULL) {
}

FileSystemTestOriginHelper::~FileSystemTestOriginHelper() {
}

void FileSystemTestOriginHelper::SetUp(
    const FilePath& base_dir, FileSystemFileUtil* file_util) {
  SetUp(base_dir, false, false, NULL, file_util);
}

void FileSystemTestOriginHelper::SetUp(
    FileSystemContext* file_system_context,
    FileSystemFileUtil* file_util) {
  DCHECK(file_system_context->path_manager());
  DCHECK(file_system_context->path_manager()->sandbox_provider());

  file_util_ = file_util;
  file_system_context_ = file_system_context;
  if (!file_util_)
    file_util_ = file_system_context->path_manager()->sandbox_provider()->
        GetFileSystemFileUtil();
  DCHECK(file_util_);

  // Prepare the origin's root directory.
  file_system_context_->path_manager()->
      ValidateFileSystemRootAndGetPathOnFileThread(
          origin_, type_, FilePath(), true /* create */);

  // Initialize the usage cache file.
  FilePath usage_cache_path = file_system_context_->path_manager()
      ->sandbox_provider()->GetUsageCachePathForOriginAndType(origin_, type_);
  FileSystemUsageCache::UpdateUsage(usage_cache_path, 0);
}

void FileSystemTestOriginHelper::SetUp(
    const FilePath& base_dir,
    bool incognito_mode,
    bool unlimited_quota,
    quota::QuotaManagerProxy* quota_manager_proxy,
    FileSystemFileUtil* file_util) {
  file_util_ = file_util;
  DCHECK(file_util_);
  scoped_refptr<quota::MockSpecialStoragePolicy> special_storage_policy =
      new quota::MockSpecialStoragePolicy;
  special_storage_policy->SetAllUnlimited(unlimited_quota);
  file_system_context_ = new FileSystemContext(
      base::MessageLoopProxy::current(),
      base::MessageLoopProxy::current(),
      special_storage_policy,
      quota_manager_proxy,
      base_dir,
      incognito_mode,
      true /* allow_file_access_from_files */,
      unlimited_quota,
      NULL);

  DCHECK(file_system_context_->path_manager());
  DCHECK(file_system_context_->path_manager()->sandbox_provider());

  // Prepare the origin's root directory.
  file_system_context_->path_manager()->
      ValidateFileSystemRootAndGetPathOnFileThread(
          origin_, type_, FilePath(), true /* create */);

  // Initialize the usage cache file.  This code assumes that we're either using
  // OFSFU or we've mocked it out in the sandbox provider.
  FilePath usage_cache_path = file_system_context_->path_manager()
      ->sandbox_provider()->GetUsageCachePathForOriginAndType(origin_, type_);
  FileSystemUsageCache::UpdateUsage(usage_cache_path, 0);
}

void FileSystemTestOriginHelper::TearDown() {
  file_system_context_ = NULL;
  MessageLoop::current()->RunAllPending();
}

FilePath FileSystemTestOriginHelper::GetOriginRootPath() const {
  return file_system_context_->path_manager()->
      ValidateFileSystemRootAndGetPathOnFileThread(
          origin_, type_, FilePath(), false);
}

FilePath FileSystemTestOriginHelper::GetLocalPath(const FilePath& path) {
  DCHECK(file_util_);
  FilePath local_path;
  scoped_ptr<FileSystemOperationContext> context(NewOperationContext());
  file_util_->GetLocalFilePath(context.get(), path, &local_path);
  return local_path;
}

FilePath FileSystemTestOriginHelper::GetLocalPathFromASCII(
    const std::string& path) {
  return GetLocalPath(FilePath().AppendASCII(path));
}

GURL FileSystemTestOriginHelper::GetURLForPath(const FilePath& path) const {
  return GURL(GetFileSystemRootURI(origin_, type_).spec() +
              path.MaybeAsASCII());
}

FilePath FileSystemTestOriginHelper::GetUsageCachePath() const {
  return file_system_context_->path_manager()
      ->sandbox_provider()->GetUsageCachePathForOriginAndType(origin_, type_);
}

int64 FileSystemTestOriginHelper::GetCachedOriginUsage() const {
  return FileSystemUsageCache::GetUsage(GetUsageCachePath());
}

bool FileSystemTestOriginHelper::RevokeUsageCache() const {
  return file_util::Delete(GetUsageCachePath(), false);
}

int64 FileSystemTestOriginHelper::ComputeCurrentOriginUsage() const {
  int64 size = file_util::ComputeDirectorySize(GetOriginRootPath());
  if (file_util::PathExists(GetUsageCachePath()))
    size -= FileSystemUsageCache::kUsageFileSize;
  return size;
}

FileSystemOperation* FileSystemTestOriginHelper::NewOperation(
    FileSystemCallbackDispatcher* callback_dispatcher) {
  DCHECK(file_system_context_.get());
  DCHECK(file_util_);
  FileSystemOperation* operation =
    new FileSystemOperation(callback_dispatcher,
                            base::MessageLoopProxy::current(),
                            file_system_context_.get(),
                            file_util_);
  InitializeOperationContext(operation->file_system_operation_context());
  return operation;
}

FileSystemOperationContext* FileSystemTestOriginHelper::NewOperationContext() {
  DCHECK(file_system_context_.get());
  DCHECK(file_util_);
  FileSystemOperationContext* context =
    new FileSystemOperationContext(file_system_context_.get(), file_util_);
  InitializeOperationContext(context);
  return context;
}

void FileSystemTestOriginHelper::InitializeOperationContext(
    FileSystemOperationContext* context) {
  DCHECK(context);
  context->set_src_origin_url(origin_);
  context->set_src_type(type_);
  context->set_dest_origin_url(origin_);
  context->set_dest_type(type_);
}

}  // namespace fileapi