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TamTam Bot SDK 𝛂

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TamTam Bot SDK is a simple library built on top of tamtam-bot-api that helps you to develop bots for TamTam quickly.

Usage

Add the following dependency to your project:

Maven:

<dependency>
    <groupId>chat.tamtam</groupId>
    <artifactId>tamtam-bot-sdk</artifactId>
    <version>0.0.2</version>
</dependency>

Gradle:

implementation group: 'chat.tamtam', name: 'tamtam-bot-sdk', version: '0.0.2'

Then you should choose the way how your bot will receive notifications: long-polling or webhook.

Long-polling

Long-polling is the easiest way to receive updates for your bot because it does not require running web server.

To start your bot just extend LongPollingBot class and add methods annotated by @UpdateHandler annotation.

These methods must have only one parameter with concrete implementation of Update. Every method will handle update of such type.

For example, simple bot that just replies on incoming message:

public class ReplyBot extends LongPollingBot {
    public ReplyBot(String accessToken) {
        super(accessToken);
    }

    @UpdateHandler
    public void onMessageCreated(MessageCreatedUpdate update) throws ClientException {
        Message message = update.getMessage();
        NewMessageBody replyMessage = NewMessageBodyBuilder.ofText("Reply on: " + message.getBody()).build();
        Long chatId = update.getMessage().getRecipient().getChatId();
        SendMessageQuery query = new SendMessageQuery(getClient(), replyMessage).chatId(chatId);
        query.enqueue(); // or `execute` to invoke method synchronously
    }
}

All other updates will be ignored. If you want to handle every update just override onUpdate method of TamTamBotBase.

Alternatively, you can directly create instance of LongPollingBot and pass handlers to constructor:

// handler can be any object that has methods annotated with `@UpdateHandler` or `@CommandHandler`
LongPollingBot bot = new LongPollingBot("%ACCESS_TOKEN%", handler1, handler2);

As soon as you created instance of bot you must start it:

ReplyBot bot = new ReplyBot("%ACCESS_TOKEN%");
bot.start();

This method starts separated non-daemon thread that polls Bot API in cycle. Call stop as soon as you ready to shutdown it:

bot.stop();

Check out EchoBot for more complete example.

Webhooks

Webhook subscribed bot requires running HTTP server. By default we use Jetty but you can use any server you want.

All webhook bots should be put in container that manages server and handle all incoming HTTP-requests to bots:

WebhookEchoBot bot1 = new WebhookEchoBot("%ACCESS_TOKEN%");
WebhookBot bot2 = new WebhookBot("%ANOTHER_ACCESS_TOKEN%") {
   @UpdateHandler
   public NewMessageBody onMessageCreated(MessageCreatedUpdate update) {
       // webhook bots can also reply with message simply returning it from update handler 
       return NewMessageBodyBuilder.ofText("Reply from handler").build();
   }
};

JettyWebhookBotContainer botContainer = new JettyWebhookBotContainer("mysupercoolbot.com", 8080);
botContainer.register(bot1);
botContainer.register(bot2);

// Register JVM shutdown hook to stop our server
Runtime.getRuntime().addShutdownHook(new Thread(botContainer::stop));

// `start` will run underlying Jetty server and register webhook subscription for each bot
botContainer.start();

Check out jetty-webhook-echobot for more complete example or tomcat-webhook-echobot as an example of alternative container implementation.

Handling bot commands

Along with update handlers, methods can be annotated by @CommandHandler. Every method will handle command with the name specified in the annotation. These methods must have Message as the first parameter. Also, these methods can have command args in the method definition. Example: user typed "/command2 text tamtam", then "text" will be arg1 and "tamtam" will be arg2.

public class ReplyBot extends LongPollingBot {
    public ReplyBot(String accessToken) {
        super(accessToken);
    }

    @CommandHandler("/command1")
    public void handleCommandOne(Message message) {
        NewMessageBody replyMessage = NewMessageBodyBuilder.ofText("Executed command1").build();
        Long chatId = update.getMessage().getRecipient().getChatId();
        SendMessageQuery query = new SendMessageQuery(getClient(), replyMessage).chatId(chatId);
        query.enqueue(); // invoke asynchronously
    }

    @CommandHandler("/command2")
    public void handleCommandTwo(Message message, String arg1, String arg2) {
        NewMessageBody replyMessage = NewMessageBodyBuilder.ofText("Args of command2: " + arg1 + ", " + arg2).build();
        Long chatId = update.getMessage().getRecipient().getChatId();
        SendMessageQuery query = new SendMessageQuery(getClient(), replyMessage).chatId(chatId);
        query.execute(); // invoke synchronously
    }

}

Requirements

Minimum required version of Java is 8.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

This project is licensed under the Apache 2.0.

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