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/*
* Copyright 2018 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_AUTH_CREDENTIALS_PROVIDER_H_
#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_AUTH_CREDENTIALS_PROVIDER_H_
#include <functional>
#include <string>
#include "Firestore/core/include/firebase/firestore/firestore_errors.h"
#include "Firestore/core/src/firebase/firestore/auth/token.h"
#include "Firestore/core/src/firebase/firestore/auth/user.h"
#include "Firestore/core/src/firebase/firestore/util/statusor.h"
#include "absl/strings/string_view.h"
namespace firebase {
namespace firestore {
namespace auth {
// `TokenErrorListener` is a listener that gets a token or an error.
using TokenListener = std::function<void(util::StatusOr<Token>)>;
// Listener notified with a User change.
using UserChangeListener = std::function<void(User user)>;
/**
* Provides methods for getting the uid and token for the current user and
* listen for changes.
*/
class CredentialsProvider {
public:
CredentialsProvider();
virtual ~CredentialsProvider();
/** Requests token for the current user. */
virtual void GetToken(TokenListener completion) = 0;
/**
* Marks the last retrieved token as invalid, making the next `GetToken`
* request force refresh the token.
*/
virtual void InvalidateToken() = 0;
/**
* Sets the listener to be notified of user changes (sign-in / sign-out). It
* is immediately called once with the initial user.
*
* Call with nullptr to remove previous listener.
*/
virtual void SetUserChangeListener(UserChangeListener listener) = 0;
protected:
/**
* A listener to be notified of user changes (sign-in / sign-out). It is
* immediately called once with the initial user.
*
* Note that this block will be called back on an arbitrary thread that is not
* the normal Firestore worker thread.
*/
UserChangeListener user_change_listener_;
};
} // namespace auth
} // namespace firestore
} // namespace firebase
#endif // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_AUTH_CREDENTIALS_PROVIDER_H_
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