How to Add Reactions and Emoji to Messages with the PubNub Chat SDK

// reference the "support" channel with the message you want to check
const channel = await chat.getChannel("support")

// reference the last message on that "support" channel
const message = await channel.getHistory({count: 1}).messages[0]

// list all thumbs-up reactions to the message
console.log(message.reactions["👍"])

// reference the "support" channel and ensure it's found
if (chat.TryGetChannel("support", out var channel))
{
    Console.WriteLine($"Found channel with name {channel.Name}");

    // get the message history with the desired count
    var messageHistory = channel.GetMessageHistory(null, null, 1);

    // get the last message from the returned list
    var lastMessage = messageHistory.Messages.FirstOrDefault();

    if (lastMessage != null)
    {
        // output all reactions added to the last message
        var reactions = lastMessage.Reactions();
        foreach (var reaction in reactions)
        {
            Console.WriteLine($"Reaction: {reaction}");
        }
    }
    else
    {
        Console.WriteLine("No messages found in the channel history.");
    }
}
else
{
    Console.WriteLine("Support channel not found.");
}

UPubnubChannel* Channel = Chat->GetChannel("support");

// Define parameters for the GetHistory method
int Limit = 10;
FString StartTimetoken = TEXT("15343325214676133");
FString EndTimetoken; // Empty FString means no end timetoken will be used

// Fetch historical messages
TArray<UPubnubMessage*> Messages = Channel->GetHistory(Limit, StartTimetoken, EndTimetoken);

// Get the reactions
TArray<FPubnubMessageAction> Reactions = Messages[0]->Reactions();

//  Assuming a channel object (e.g. obtained through chat.getChannel(channelId))
val channel: Channel

channel.getHistory(count = 1).async { result ->
    result.onSuccess { history ->
        history.messages.firstOrNull()?.let { message ->
            message.toggleReaction("👍").async {
                it.onSuccess { newMessage ->
                    // success - the returned message needs to replace an existing message in your app’s message list
                }.onFailure {
                    // failure
                }
            }
        }
    }.onFailure {
        // handle failure
    }
}

chat?.getChannel(channelId: "support") { result in
    switch result {
    case let .success(channel):
        if let supportChannel = channel {
            print("Fetched support channel metadata with ID: \(supportChannel.id)")

            // Get the latest message from the "support" channel's history
            supportChannel.getHistory(count: 1) { historyResult in
                switch historyResult {
                case let .success(response):
                    if let latestMessage = response.messages.first {
                        print("Latest message: \(latestMessage)")

                        // Check if the current user added the "thumb up" emoji reaction
                        let userAddedThumbUp = latestMessage.hasUserReaction(reaction: "\u{1F44D}")
                        if userAddedThumbUp {
                            print("The current user has added the 'thumb up' emoji (👍) to the latest message.")
                        } else {
                            print("The current user has not added the 'thumb up' emoji (👍) to the latest message.")
                        }
                    } else {
                        print("No messages found in history")
                    }
                case let .failure(error):
                    print("Failed to fetch message history: \(error)")
                }
            }
        } else {
            print("Support channel not found")
        }
    case let .failure(error):
        print("Failed to fetch support channel metadata: \(error)")
    }
}