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/*
* Copyright 2017 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.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
/**
* Represents the action taken on a subscription topic.
*/
typedef NS_ENUM(NSInteger, FIRMessagingTopicAction) {
FIRMessagingTopicActionSubscribe,
FIRMessagingTopicActionUnsubscribe
};
/**
* Represents the possible results of a topic operation.
*/
typedef NS_ENUM(NSInteger, FIRMessagingTopicOperationResult) {
FIRMessagingTopicOperationResultSucceeded,
FIRMessagingTopicOperationResultError,
FIRMessagingTopicOperationResultCancelled,
};
/**
* Callback to invoke once the HTTP call to FIRMessaging backend for updating
* subscription finishes.
*
* @param result The result of the operation. If the result is
* FIRMessagingTopicOperationResultError, the error parameter will be
* non-nil.
* @param error The error which occurred while updating the subscription topic
* on the FIRMessaging server. This will be nil in case the operation
* was successful, or if the operation was cancelled.
*/
typedef void(^FIRMessagingTopicOperationCompletion)
(FIRMessagingTopicOperationResult result, NSError * _Nullable error);
NS_ASSUME_NONNULL_END
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