Message Reactions API for PubNub 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.

Terminology

All message reactions in code are collectively called message reactions in the docs and the term applies both to reacting to a message (through emojis) and acting on a message (by deleting it).

Add Message Reaction

Requires Presence add-on

This method requires that the Presence add-on is enabled for your key in the Admin Portal. Read the support page on enabling add-on features on your keys.

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;

Parameter	Type	Required	Description
`request`	PNAddMessageActionRequest	Yes	`Add message reaction` request with all information about new message reaction which will be passed to PubNub service.
`block`	PNAddMessageActionCompletionBlock	No	`Add message reaction` request completion `block`.

PNAddMessageActionRequest

Parameter	Type	Required	Description
`type`	NSString	Yes	What feature this message reaction represents. Maximum `15` characters.
`value`	NSString	Yes	Value which should be added with message reaction type.
`channel`	NSString	Yes	Name of channel which stores the message for which `action` should be added.
`messageTimetoken`	NSNumber	Yes	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. Read the support page on enabling add-on features on your keys.

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);

Parameter	Type	Required	Description
`channel`	NSString	Yes	Name of channel which store message for which `action` should be added.
`messageTimetoken`	NSNumber	Yes	Timetoken of message for which `action` should be added.
`type`	NSString	Yes	What feature this message reaction represents.
`value`	NSString	Yes	Value which should be stored along with message reaction.
`block`	PNAddMessageActionCompletionBlock	No	`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. Read the support page on enabling add-on features on your keys.

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;

Parameter	Type	Required	Description
`request`	PNRemoveMessageActionRequest	Yes	`Remove message reaction` request with information about the existing message reaction.
`block`	PNRemoveMessageActionCompletionBlock	No	`Remove message reaction` request completion `block`.

PNRemoveMessageActionRequest

Parameter	Type	Required	Description
`actionTimetoken`	NSNumber	Yes	Message reaction addition timetoken.
`channel`	NSString	Yes	Name of channel which store message for which action should be removed.
`messageTimetoken`	NSNumber	Yes	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. Read the support page on enabling add-on features on your keys.

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);

Parameter	Type	Required	Description
`channel`	NSString	Yes	Name of channel which store message for which `action` should be removed.
`messageTimetoken`	NSNumber	Yes	Timetoken of message for which `action` should be removed.
`actionTimetoken`	NSNumber	Yes	`Action` addition timetoken.
`block`	PNRemoveMessageActionCompletionBlock	No	`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. Read the support page on enabling add-on features on your keys.

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;

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

PNFetchMessageActionsRequest

Parameter	Type	Required	Description
`start`	NSNumber	Yes	Return values will be less than start.
`end`	NSNumber	Yes	Return values will be greater than or equal to end.
`limit`	NSUInteger	Yes	Number of messages actions to return in response.
`channel`	NSString	Yes	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. Read the support page on enabling add-on features on your keys.

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);

Parameter	Type	Required	Description
`channel`	NSString	Yes	Name of channel from which list of messages `actions` should be retrieved.
`start`	NSNumber	No	`Message reaction` timetoken denoting the start of the range requested. Return values will be less than start.
`end`	NSNumber	No	`Message reaction` timetoken denoting the end of the range requested. Return values will be greater than or equal to end.
`limit`	NSUInteger	No	Number of message reactions to return in response.
`block`	PNFetchMessageActionsCompletionBlock	Yes	`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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Terminology

Add Message Reaction​

Requires Presence add-on

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