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// Copyright 2020 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 CHROME_BROWSER_ASH_CROSTINI_TERMINA_INSTALLER_H_
#define CHROME_BROWSER_ASH_CROSTINI_TERMINA_INSTALLER_H_
#include <vector>
#include "base/callback_forward.h"
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/component_updater/cros_component_manager.h"
#include "chromeos/dbus/dlcservice/dlcservice_client.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace crostini {
// This class is responsible for tracking which source the termina VM is
// installed from (component updater, dlc service etc.) and ensuring that any
// unneeded versions are cleaned up.
class TerminaInstaller {
public:
TerminaInstaller();
~TerminaInstaller();
TerminaInstaller(const TerminaInstaller&) = delete;
TerminaInstaller& operator=(const TerminaInstaller&) = delete;
enum class InstallResult {
// The install succeeded.
Success,
// The install failed for an unspecified reason.
Failure,
// The install failed because it needed to download an image and the device
// is offline.
Offline,
// The device must be updated before termina can be installed.
NeedUpdate,
};
// This is really a bool, but std::vector<bool> has weird properties that stop
// us from using bool here.
using UninstallResult = int;
// Ensure that termina is installed. This will also attempt to remove any
// other instances of termina that may be installed, but will not block on or
// check the result of this.
//
// |is_initial_install| should be set to true when this is called from the
// crostini installer, and false otherwise. This allows us to fall back to the
// cros-termina component if transitioning to DLC fails while still requiring
// it for new installs. In the future this may also allow us to force the DLC
// to be installed even on tethered connections during the install, as in this
// case we can expect the user already knows we will download things.
void Install(base::OnceCallback<void(InstallResult)> callback,
bool is_initial_install);
// Remove termina entirely. This will also attempt to remove any
// other instances of termina that may be installed.
void Uninstall(base::OnceCallback<void(bool)> callback);
// Get a path to the install location of termina. You must call Install and
// get a Success response back before calling this method.
base::FilePath GetInstallLocation();
// Get the id of the installed DLC, or nullopt if DLC is not being used.
absl::optional<std::string> GetDlcId();
// Attempt to cancel a pending install. Note that neither DLC service nor
// component updater support this, but we have some retry logic that can be
// aborted.
void Cancel();
private:
void InstallDlc(base::OnceCallback<void(InstallResult)> callback,
bool is_initial_install);
void OnInstallDlc(base::OnceCallback<void(InstallResult)> callback,
bool is_initial_install,
const chromeos::DlcserviceClient::InstallResult& result);
void InstallComponent(base::OnceCallback<void(InstallResult)> callback);
void OnInstallComponent(base::OnceCallback<void(InstallResult)> callback,
bool is_update_checked,
component_updater::CrOSComponentManager::Error error,
const base::FilePath& path);
void ReinstallComponent(base::OnceCallback<void(InstallResult)> callback);
void OnReinstallComponent(
base::OnceCallback<void(InstallResult)> callback,
bool is_update_checked,
component_updater::CrOSComponentManager::Error error,
const base::FilePath& path);
void RemoveComponentIfPresent(base::OnceCallback<void()> callback,
UninstallResult* result);
void RemoveDlcIfPresent(base::OnceCallback<void()> callback,
UninstallResult* result);
void RemoveDlc(base::OnceCallback<void()> callback, UninstallResult* result);
void OnUninstallFinished(base::OnceCallback<void(bool)> callback,
std::vector<UninstallResult> partial_results);
// Do we need to try to force a component update? We want to do this at most
// once per session, so this is initialized to true and unset whenever we
// successfully check for an update or we need to install a new major version.
bool component_update_check_needed_{true};
absl::optional<base::FilePath> termina_location_{absl::nullopt};
absl::optional<std::string> dlc_id_{};
base::WeakPtrFactory<TerminaInstaller> weak_ptr_factory_{this};
};
} // namespace crostini
#endif // CHROME_BROWSER_ASH_CROSTINI_TERMINA_INSTALLER_H_