/**
 * Copyright (c) 2016-present Invertase Limited & Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this library 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

/**
 * Transaction state map. Unique `put`; begin uses `putOrSkip` (atomic putIfAbsentOrSame). Callers
 * `take` or `abortAll` then abort (flag + semaphore) outside the HandleMap lock. Stored values are
 * `RNFBFirestoreTransactionAttempt` instances. `abortAll` calls `abort` on each remaining attempt.
 */
@interface RNFBFirestoreTransactionRegistry : NSObject

- (BOOL)put:(id)key value:(id)value error:(NSError *_Nullable *_Nullable)error;
/// YES: stored or same-value retry. NO: occupied by a different value; leave existing.
- (BOOL)putOrSkip:(id)key value:(id)value;
- (nullable id)get:(id)key;
- (nullable id)take:(id)key;
- (void)abortAll;

@end

NS_ASSUME_NONNULL_END