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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_ACCOUNT_MANAGER_CORE_CHROMEOS_ACCESS_TOKEN_FETCHER_H_
#define COMPONENTS_ACCOUNT_MANAGER_CORE_CHROMEOS_ACCESS_TOKEN_FETCHER_H_
#include <memory>
#include <string>
#include <vector>
#include "base/functional/callback_forward.h"
#include "chromeos/crosapi/mojom/account_manager.mojom.h"
#include "components/account_manager_core/chromeos/account_manager.h"
#include "google_apis/gaia/oauth2_access_token_consumer.h"
#include "google_apis/gaia/oauth2_access_token_fetcher.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
namespace crosapi {
// Mojo interface implementation to fetch access tokens using Chrome OS Account
// Manager.
class COMPONENT_EXPORT(ASH_COMPONENTS_ACCOUNT_MANAGER) AccessTokenFetcher
: public mojom::AccessTokenFetcher,
public OAuth2AccessTokenConsumer {
public:
// `account_manager` is a non owning pointer to Chrome OS Account Manager and
// is guaranteed to outlive `this` instance.
// `mojo_account_key` is the account for which an access token needs to be
// fetched.
// `done_callback` is called after an access token fetch is complete. Used by
// the owner of `this` object to figure out when it is safe to delete it.
AccessTokenFetcher(
account_manager::AccountManager* account_manager,
mojom::AccountKeyPtr mojo_account_key,
const std::string& consumer_name,
base::OnceCallback<void(AccessTokenFetcher*)> done_callback,
mojo::PendingReceiver<mojom::AccessTokenFetcher> receiver);
AccessTokenFetcher(const AccessTokenFetcher&) = delete;
AccessTokenFetcher& operator=(const AccessTokenFetcher&) = delete;
~AccessTokenFetcher() override;
// mojom::AccessTokenFetcher overrides.
void Start(const std::vector<std::string>& scopes,
StartCallback callback) override;
// OAuth2AccessTokenConsumer overrides.
void OnGetTokenSuccess(const TokenResponse& token_response) override;
void OnGetTokenFailure(const GoogleServiceAuthError& error) override;
std::string GetConsumerName() const override;
private:
// Mojo pipe disconnection handler.
void OnMojoPipeError();
// Finish and cleanup by calling `done_callback_`.
void Finish();
std::unique_ptr<OAuth2AccessTokenFetcher> access_token_fetcher_;
base::OnceCallback<void(mojom::AccessTokenResultPtr)> callback_;
const std::string consumer_name_;
// Called after `this` object's work is done and it can be safely deleted.
base::OnceCallback<void(AccessTokenFetcher*)> done_callback_;
mojo::Receiver<mojom::AccessTokenFetcher> receiver_;
};
} // namespace crosapi
#endif // COMPONENTS_ACCOUNT_MANAGER_CORE_CHROMEOS_ACCESS_TOKEN_FETCHER_H_
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