// Copyright 2015 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 "components/offline_pages/core/offline_page_test_archiver.h"

#include <string>
#include <utility>

#include "base/bind.h"
#include "base/files/file_util.h"
#include "base/location.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"

namespace offline_pages {

OfflinePageTestArchiver::OfflinePageTestArchiver(
    Observer* observer,
    const GURL& url,
    ArchiverResult result,
    const base::string16& result_title,
    int64_t size_to_report,
    const std::string& digest_to_report,
    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner)
    : observer_(observer),
      url_(url),
      create_archive_params_(std::string()),
      result_(result),
      size_to_report_(size_to_report),
      create_archive_called_(false),
      publish_archive_called_(false),
      archive_attempt_failure_(false),
      delayed_(false),
      result_title_(result_title),
      digest_to_report_(digest_to_report),
      task_runner_(task_runner) {}

OfflinePageTestArchiver::~OfflinePageTestArchiver() {
  EXPECT_TRUE(create_archive_called_ || publish_archive_called_ ||
              archive_attempt_failure_);
}

void OfflinePageTestArchiver::CreateArchive(
    const base::FilePath& archives_dir,
    const CreateArchiveParams& create_archive_params,
    content::WebContents* web_contents,
    CreateArchiveCallback callback) {
  create_archive_called_ = true;
  callback_ = std::move(callback);
  archives_dir_ = archives_dir;
  create_archive_params_ = create_archive_params;
  if (!delayed_)
    CompleteCreateArchive();
}

void OfflinePageTestArchiver::PublishArchive(
    const OfflinePageItem& offline_page,
    const scoped_refptr<base::SequencedTaskRunner>& background_task_runner,
    const base::FilePath& new_file_path,
    SystemDownloadManager* download_manager,
    PublishArchiveDoneCallback publish_done_callback) {
  publish_archive_called_ = true;
  PublishArchiveResult publish_archive_result;

  if (archive_attempt_failure_) {
    publish_archive_result.move_result = SavePageResult::FILE_MOVE_FAILED;
  } else {
    publish_archive_result.move_result = SavePageResult::SUCCESS;
    publish_archive_result.new_file_path =
        new_file_path.Append(offline_page.file_path.BaseName());
    publish_archive_result.download_id = 0;
  }

  // Note: once the |publish_done_callback| is invoked it is very likely that
  // this instance will be destroyed. So all parameters sent to it must not be
  // bound to the lifetime on this.
  background_task_runner->PostTask(
      FROM_HERE, base::BindOnce(std::move(publish_done_callback), offline_page,
                                std::move(publish_archive_result)));
}

void OfflinePageTestArchiver::CompleteCreateArchive() {
  DCHECK(!callback_.is_null());
  base::FilePath archive_path;
  if (filename_.empty()) {
    ASSERT_TRUE(base::CreateTemporaryFileInDir(archives_dir_, &archive_path));
  } else {
    archive_path = archives_dir_.Append(filename_);
    // This step ensures the file is created and closed immediately.
    base::File file(archive_path, base::File::FLAG_OPEN_ALWAYS);
  }
  if (observer_)
    observer_->SetLastPathCreatedByArchiver(archive_path);
  task_runner_->PostTask(
      FROM_HERE,
      base::BindOnce(std::move(callback_), result_, url_, archive_path,
                     result_title_, size_to_report_, digest_to_report_));
}

}  // namespace offline_pages