1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_
6#define CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_
7
8#include <string>
9
10#include "base/memory/ref_counted.h"
11
12namespace base {
13class FilePath;
14class Time;
15}
16
17struct WebApplicationInfo;
18
19namespace extensions {
20class Extension;
21
22// Generates a version number for an extension from a time. The goal is to make
23// use of the version number to communicate the date in a human readable form,
24// while maintaining high enough resolution to change each time an app is
25// reinstalled. The version that is returned has the format:
26//
27// <year>.<month>.<day>.<fraction>
28//
29// fraction is represented as a number between 0 and 2^16-1. Each unit is
30// ~1.32 seconds.
31std::string ConvertTimeToExtensionVersion(const base::Time& time);
32
33// Wraps the specified web app in an extension. The extension is created
34// unpacked in the system temp dir. Returns a valid extension that the caller
35// should take ownership on success, or NULL and |error| on failure.
36//
37// NOTE: The app created is always marked as a bookmark app.
38// NOTE: This function does file IO and should not be called on the UI thread.
39// NOTE: The caller takes ownership of the directory at extension->path() on the
40// returned object.
41scoped_refptr<Extension> ConvertWebAppToExtension(
42    const WebApplicationInfo& web_app_info,
43    const base::Time& create_time,
44    const base::FilePath& extensions_dir);
45
46}  // namespace extensions
47
48#endif  // CHROME_BROWSER_EXTENSIONS_CONVERT_WEB_APP_H_
49