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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UPGRADE_DETECTOR_GET_INSTALLED_VERSION_H_
#define CHROME_BROWSER_UPGRADE_DETECTOR_GET_INSTALLED_VERSION_H_
#include <optional>
#include "base/functional/callback_forward.h"
#include "base/version.h"
struct InstalledAndCriticalVersion {
explicit InstalledAndCriticalVersion(base::Version the_installed_version);
InstalledAndCriticalVersion(base::Version the_installed_version,
base::Version the_critical_version);
InstalledAndCriticalVersion(InstalledAndCriticalVersion&& other) noexcept;
InstalledAndCriticalVersion& operator=(InstalledAndCriticalVersion&& other) =
default;
~InstalledAndCriticalVersion();
// The installed version (not necessarily the one that is running). May be
// invalid in case of failure reading the installed version.
base::Version installed_version;
// An optional critical version, indicating a minimum version that must be
// running. A running version lower than this is presumed to have a critical
// flaw sufficiently important that it must be updated as soon as possible.
std::optional<base::Version> critical_version;
};
// A platform-specific function that invokes a callback with the currently
// installed version and an optional critical version.
using InstalledVersionCallback =
base::OnceCallback<void(InstalledAndCriticalVersion)>;
// Triggers the callback with the currently installed version and an optional
// critical version (Windows only as of this writing). This function may block
// the thread on which it runs.
void GetInstalledVersion(InstalledVersionCallback callback);
#endif // CHROME_BROWSER_UPGRADE_DETECTOR_GET_INSTALLED_VERSION_H_
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