Message Reactions API for Cocoa Objective-C SDK

Add or remove actions on published messages to build features like receipts, reactions, or to associate custom metadata to messages. Clients can subscribe to a channel to receive message reaction events on that channel. They can also fetch past message reactions from Message Persistence independently or when they fetch original messages.

Message Actions vs. Message Reactions

Message Actions is the flexible, low-level API for adding any metadata to messages (read receipts, delivery confirmations, custom data), while Message Reactions specifically refers to using Message Actions for emoji/social reactions.

In PubNub Core and Chat SDKs, the same underlying Message Actions API is referred to as Message Reactions when used for emoji reactions - it's the same functionality, just different terminology depending on the use case.

Add Message Reaction

Requires Presence

This method requires that the Presence add-on is enabled for your key in the Admin Portal.

Add an action on a published message. Returns the added action in the response.

Method(s)

To Add a Message Reaction you can use the following method(s) in the Cocoa SDK:

- (void)addMessageActionWithRequest:(PNAddMessageActionRequest *)request
                         completion:(nullable PNAddMessageActionCompletionBlock)block;

* required

Parameter	Description
`request` * Type: PNAddMessageActionRequest	`Add message reaction` request with all information about new message reaction which will be passed to PubNub service.
`block` Type: PNAddMessageActionCompletionBlock	`Add message reaction` request completion `block`.

PNAddMessageActionRequest

* required

Parameter	Description
`type` * Type: NSString	What feature this message reaction represents. Maximum `15` characters.
`value` * Type: NSString	Value which should be added with message reaction type.
`channel` * Type: NSString	Name of channel which stores the message for which `action` should be added.
`messageTimetoken` * Type: NSNumber	Timetoken (PubNub's high precision timestamp) of message to which `action` should be added.

Basic Usage

PNAddMessageActionRequest *request = [PNAddMessageActionRequest requestWithChannel:@"chat"
                                                                  messageTimetoken:@(1234567890)];
request.type = @"reaction";
request.value = @"smile";

[self.client addMessageActionWithRequest:request completion:^(PNAddMessageActionStatus *status) {
    if (!status.isError) {
        /**
         * Message reaction successfully added.
         * Created message reaction information available here: status.data.action
         */
    } else {
        if (status.statusCode == 207) {
            // Message reaction has been added, but event not published.
        } else {
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Response

Response objects which is returned by client when add message reaction Message Reaction API is used:

@interface PNAddMessageActionData : PNServiceData

// Added message reaction.
@property (nonatomic, nullable, readonly, strong) PNMessageAction *action;

@end

@interface PNAddMessageActionStatus : PNAcknowledgmentStatus

// Add message reaction request processed information.
@property (nonatomic, readonly, strong) PNAddMessageActionData *data;

@end

Add Message Reaction (Builder Pattern)

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Add an action on a published message. Returns the added action in the response.

Method(s)

To Add a Message Reaction you can use the following method(s) in the Cocoa SDK:

addMessageAction()
    .channel(NSString *)
    .messageTimetoken(NSNumber *)
    .type(NSString *)
    .value(NSString *)
    .performWithCompletion(nullable PNAddMessageActionCompletionBlock);

* required

Parameter	Description
`channel` * Type: NSString	Name of channel which store message for which `action` should be added.
`messageTimetoken` * Type: NSNumber	Timetoken of message for which `action` should be added.
`type` * Type: NSString	What feature this message reaction represents.
`value` * Type: NSString	Value which should be stored along with message reaction.
`block` Type: PNAddMessageActionCompletionBlock	`Add message reaction` request completion `block`.

Basic Usage

self.client.addMessageAction()
    .channel(@"chat")
    .messageTimetoken(@(1234567890))
    .type(@"reaction")
    .value(@"smile")
    .performWithCompletion(^(PNAddMessageActionStatus *status) {
        if (!status.isError) {
            /**
             * Message reaction successfully added.
             * Created message reaction information available here: status.data.action
             */
        } else {
            if (status.statusCode == 207) {
                // Message reaction has been added, but event not published.
            } else {
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Response

Response objects which is returned by client when add message reaction Message Reaction API is used:

@interface PNAddMessageActionData : PNServiceData

// Added message reaction.
@property (nonatomic, nullable, readonly, strong) PNMessageAction *action;

@end

@interface PNAddMessageActionStatus : PNAcknowledgmentStatus

// Add message reaction request processed information.
@property (nonatomic, readonly, strong) PNAddMessageActionData *data;

@end

Remove Message Reaction

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Remove a peviously added action on a published message. Returns an empty response.

Method(s)

To Remove a Message Reaction you can use the following method(s) in the Cocoa SDK:

- (void)removeMessageActionWithRequest:(PNRemoveMessageActionRequest *)request
                            completion:(nullable PNRemoveMessageActionCompletionBlock)block;

* required

Parameter	Description
`request` * Type: PNRemoveMessageActionRequest	`Remove message reaction` request with information about the existing message reaction.
`block` Type: PNRemoveMessageActionCompletionBlock	`Remove message reaction` request completion `block`.

PNRemoveMessageActionRequest

* required

Parameter	Description
`actionTimetoken` * Type: NSNumber	Message reaction addition timetoken.
`channel` * Type: NSString	Name of channel which store message for which action should be removed.
`messageTimetoken` * Type: NSNumber	Timetoken (PubNub's high precision timestamp) of message to which `action` should be removed.

Basic Usage

PNRemoveMessageActionRequest *request = [PNRemoveMessageActionRequest requestWithChannel:@"chat"
                                                                        messageTimetoken:@(1234567890)];
request.actionTimetoken = @(1234567891);

[self.client removeMessageActionWithRequest:request
                                 completion:^(PNAcknowledgmentStatus *status) {

    if (!status.isError) {
        // Message reaction successfully removed.
    } else {
        /**
         * Handle remove message reaction error. Check 'category' property to find out possible
         * issue because of which request did fail.
         *
         * Request can be resent using: [status retry]
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Response

Response objects which is returned by client when remove message reaction Message Reaction API is used:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Remove Message Reaction (Builder Pattern)

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Remove a peviously added action on a published message. Returns an empty response.

Method(s)

removeMessageAction()
    .channel(NSString *)
    .messageTimetoken(NSNumber *)
    .actionTimetoken(NSNumber *)
    .performWithCompletion(nullable PNRemoveMessageActionCompletionBlock);

* required

Parameter	Description
`channel` * Type: NSString	Name of channel which store message for which `action` should be removed.
`messageTimetoken` * Type: NSNumber	Timetoken of message for which `action` should be removed.
`actionTimetoken` * Type: NSNumber	`Action` addition timetoken.
`block` Type: PNRemoveMessageActionCompletionBlock	`Remove message reaction` request completion `block`.

Basic Usage

self.client.removeMessageAction()
    .channel("chat")
    .messageTimetoken(@(1234567890))
    .actionTimetoken(@(1234567891))
    .performWithCompletion(^(PNCreateSpaceStatus *status) {
        if (!status.isError) {
            // Message reaction successfully removed.
        } else {
            /**
             * Handle remove message reaction error. Check 'category' property to find out possible
             * issue because of which request did fail.
             *
             * Request can be resent using: [status retry]
             */
        }
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Response

Response objects which is returned by client when remove message reaction Message Reaction API is used:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNAcknowledgmentStatus : PNErrorStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Get Message Reactions

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Get a list of message reactions in a channel. Returns a list of actions sorted by the action's timetoken in ascending order.

Method(s)

To Get Message Reactions you can use the following method(s) in the Cocoa SDK:

- (void)fetchMessagesActionsWithRequest:(PNFetchMessagesActionsRequest *)request
                             completion:(PNFetchMessageActionsCompletionBlock)block;

* required

Parameter	Description
`request` * Type: PNFetchMessageActionsRequest	`Fetch message reactions` request with all information which should be used to fetch existing `messages actions`.
`block` * Type: PNFetchMessageActionsCompletionBlock	`Fetch message reactions` request completion `block`.

PNFetchMessageActionsRequest

* required

Parameter	Description
`start` * Type: NSNumber	Return values will be less than start.
`end` * Type: NSNumber	Return values will be greater than or equal to end.
`limit` * Type: NSUInteger	Number of messages actions to return in response.
`channel` * Type: NSString	Name of channel from which list of message reactions should be retrieved.

Basic Usage

PNFetchMessageActionsRequest *request = [PNFetchMessageActionsRequest requestWithChannel:@"chat"];
request.start = @(1234567891);
request.limit = 200;

[self.client fetchMessageActionsWithRequest:request
                                 completion:^(PNFetchMessageActionsResult *result,
                                              PNErrorStatus *status) {

    if (!status.isError) {
        /**
         * Message reactions successfully fetched.
         * Result object has following information:
         *     result.data.actions - list of message reaction instances
         *     result.data.start - fetched messages actions time range start (oldest message
         *         action timetoken).
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Response

Response objects which is returned by client when fetch message reactions Message Reaction API is used:

@interface PNFetchMessageActionsData : PNServiceData

// List of fetched messages actions.
@property (nonatomic, readonly, strong) NSArray<PNMessageAction *> *actions;

/**
 * Fetched messages actions time range start (oldest message reaction timetoken).
 *
 * This timetoken can be used as 'start' value to fetch older messages actions.
 */
@property (nonatomic, readonly, strong) NSNumber *start;

// Fetched messages actions time range end (newest action timetoken).
@property (nonatomic, readonly, strong) NSNumber *end;

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Error response which is used in case of Message Reaction API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Get Message Reactions (Builder Pattern)

Requires Message Persistence

This method requires that Message Persistence is enabled for your key in the Admin Portal.

Get a list of message reactions in a channel. Returns a list of actions sorted by the action's timetoken in ascending order.

Method(s)

To Get Message Reactions you can use the following method(s) in the Cocoa SDK:

fetchMessageActions()
    .channel(NSString *)
    .start(NSNumber *)
    .end(NSNumber *)
    .limit(NSUInteger)
    .performWithCompletion(PNFetchMessageActionsCompletionBlock);

* required

Parameter	Description
`channel` * Type: NSString	Name of channel from which list of messages `actions` should be retrieved.
`start` Type: NSNumber	`Message reaction` timetoken denoting the start of the range requested. Return values will be less than start.
`end` Type: NSNumber	`Message reaction` timetoken denoting the end of the range requested. Return values will be greater than or equal to end.
`limit` Type: NSUInteger	Number of message reactions to return in response.
`block` * Type: PNFetchMessageActionsCompletionBlock	`Fetch message reactions` request completion `block`.

Basic Usage

self.client.fetchMessageActions()
    .channel(@"chat")
    .start(@(1234567891))
    .limit(200)
    .performWithCompletion(^(PNFetchMessageActionsResult *result,
                             NErrorStatus *status) {

        if (!status.isError) {
            /**
             * Message reaction successfully added.
             * Result object has following information:
             *     result.data.actions - list of message reaction instances
             *     result.data.start - fetched messages actions time range start (oldest message
             *         action timetoken).
             *     result.data.end - fetched messages actions time range end (newest action timetoken).
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Response

Response objects which is returned by client when fetch message reactions Message Reaction API is used:

@interface PNFetchMessageActionsData : PNServiceData

// List of fetched messages actions.
@property (nonatomic, readonly, strong) NSArray<PNMessageAction *> *actions;

/**
 * Fetched messages actions time range start (oldest message reaction timetoken).
 *
 * This timetoken can be used as 'start' value to fetch older messages actions.
 */
@property (nonatomic, readonly, strong) NSNumber *start;

// Fetched messages actions time range end (newest action timetoken).
@property (nonatomic, readonly, strong) NSNumber *end;

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Error response which is used in case of Message Reaction API call failure:

@interface PNErrorData : PNServiceData

// Stringified error information.
@property (nonatomic, readonly, strong) NSString *information;

@end

@interface PNErrorStatus : PNStatus

// Whether status object represent error or not.
@property (nonatomic, readonly, assign, getter = isError) BOOL error;

// Additional information related to error status object.
@property (nonatomic, readonly, strong) PNErrorData *errorData;

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Message Actions vs. Message Reactions

Add Message Reaction​

Requires Presence

Method(s)​

PNAddMessageActionRequest​

Basic Usage​

Response​

Add Message Reaction (Builder Pattern)​

Requires Message Persistence

Method(s)​

Basic Usage​

Response​

Remove Message Reaction​

Requires Message Persistence

Method(s)​

PNRemoveMessageActionRequest​

Basic Usage​

Response​

Remove Message Reaction (Builder Pattern)​

Requires Message Persistence

Method(s)​

Basic Usage​

Response​

Get Message Reactions​

Requires Message Persistence

Method(s)​

PNFetchMessageActionsRequest​

Basic Usage​

Response​

Get Message Reactions (Builder Pattern)​

Requires Message Persistence

Method(s)​

Basic Usage​

Response​

Add Message Reaction

Method(s)

PNAddMessageActionRequest

Basic Usage

Response

Add Message Reaction (Builder Pattern)

Method(s)

Basic Usage

Response

Remove Message Reaction

Method(s)

PNRemoveMessageActionRequest

Basic Usage

Response

Remove Message Reaction (Builder Pattern)

Method(s)

Basic Usage

Response

Get Message Reactions

Method(s)

PNFetchMessageActionsRequest

Basic Usage

Response

Get Message Reactions (Builder Pattern)

Method(s)

Basic Usage

Response