ObjMatrix  Diff

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/**
 * @brief A block which will be treated as a single transaction for the storage.
 *
 * @return Whether the transaction should be committed (`true`) or rolled back
 *	   (`false`).
 */
typedef bool (^mtx_storage_transaction_block_t)(void);
typedef bool (^MTXStorageTransactionBlock)(void);

/**
 * @brief A protocol for a storage to be used by @ref MTXClient.
 */
@protocol MTXStorage <OFObject>
/**
 * @brief Performs all operations inside the block as a transaction.
 */
- (void)transactionWithBlock: (mtx_storage_transaction_block_t)block;
- (void)transactionWithBlock: (MTXStorageTransactionBlock)block;

/**
 * @brief Stores the next batch for the specified device.
 *
 * @param nextBatch The next batch for the device
 * @param deviceID The device for which to store the next batch
 */
- (void)setNextBatch: (OFString *)nextBatch
- (void)setNextBatch: (OFString *)nextBatch forDeviceID: (OFString *)deviceID;
	 forDeviceID: (OFString *)deviceID;

/**
 * @brief Returns the next batch for the specified device.
 *
 * @param deviceID The device ID for which to return the next batch
 * @return The next batch for the specified device, or `nil` if none is
 *	   available.
 */
- (nullable OFString *)nextBatchForDeviceID: (OFString *)deviceID;

/**
 * @brief Adds the specified room ID to the list of joined rooms for the
 *	  specified user ID.
 *
 * @param roomID The room ID to add to the list of joined rooms
 * @param userID The user ID for which to add the room
 */
- (void)addJoinedRoom: (OFString *)roomID
- (void)addJoinedRoom: (OFString *)roomID forUser: (OFString *)userID;
	      forUser: (OFString *)userID;

/**
 * @brief Removes the specified room ID to the list of joined rooms for the
 *	  specified user ID.
 *
 * @param roomID The room ID to add to the list of joined rooms
 * @param userID The user ID for which to add the room
 */
- (void)removeJoinedRoom: (OFString *)roomID
- (void)removeJoinedRoom: (OFString *)roomID forUser: (OFString *)userID;
		 forUser: (OFString *)userID;

/**
 * @brief Returns the joined room IDs for the specified user ID.
 *
 * @param userID The user ID for which to return the joined rooms
 * @return The joined room IDs for the specified user ID
 */
- (OFArray<OFString *> *)joinedRoomsForUser: (OFString *)userID;
@end

OF_ASSUME_NONNULL_END