TelegramBots Documentation

File: README.md Copy Chapter

Telegram Bot Java Library

A simple to use library to create Telegram Bots in Java

Contributions Copy Chapter

Feel free to fork this project, work on it and then make a pull request against DEV branch. Most of the times I will accept them if they add something valuable to the code.

Please, DO NOT PUSH ANY TOKEN OR API KEY, I will never accept a pull request with that content.

Webhooks vs GetUpdates Copy Chapter

Both ways are supported, but I recommend long polling method.

Usage Copy Chapter

For more information, check our documentation

Example bots Copy Chapter

Open them and send them /help command to get some information about their capabilities:

https://telegram.me/weatherbot (Use custom keyboards)

https://telegram.me/directionsbot (Basic messages)

https://telegram.me/filesbot (Send files by file_id)

https://telegram.me/TGlanguagesbot (Send files uploding them)

https://telegram.me/RaeBot (Inline support)

https://telegram.me/SnowcrashBot (Webhook support)

You can see code for those bots at TelegramBotsExample project.

Telegram Bot API Copy Chapter

This library use Telegram bot API, you can find more information following the link.

Questions or Suggestions Copy Chapter

Feel free to create issues here as you need or join the chat

Powered by Intellij and DigitalOcean Copy Chapter

License Copy Chapter

MIT License

Copyright (c) 2016 Ruben Bermudez

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

File: telegrambots-abilities/README.md Copy Chapter

Usage Copy Chapter

See our documentation here

Motivation Copy Chapter

Ever since I've started programming bots for Telegram, I've been using the Telegram Bot Java API. It's a basic and nicely done API that is a 1-to-1 translation of the HTTP API exposed by Telegram.

Dealing with a basic API has its advantages and disadvantages. Obviously, there's nothing hidden. If it's there on Telegram, it's here in the Java API.
When you want to implement a feature in your bot, you start asking these questions:

• The WHO?
  • Who is going to use this feature? Should they be allowed to use all the features?
• The WHAT?
  • Under what conditions should I allow this feature?
  • Should the message have a photo? A document? Oh, maybe a callback query?
• The HOW?
  • If my bot crashes, how can I resume my operation?
  • Should I utilize a DB?
  • How can I separate logic execution of different features?
  • How can I unit-test my feature outside of Telegram?

Every time you write a command or a feature, you will need to answer these questions and ensure that your feature logic works.

Ability Bot Abstraction Copy Chapter

After implementing my fifth bot using that API, I had had it with the amount of boilerplate code that was needed for every added feature. Methods were getting overly-complex and readability became subpar.
That is where the notion of another layer of abstraction (AbilityBot) began taking shape.

The AbilityBot abstraction defines a new object, named Ability. An ability combines conditions, flags, action, post-action and replies.
As an example, here is a code-snippet of an ability that creates a /hello command:

public Ability sayHelloWorld() {
    return Ability
              .builder()
              .name("hello")
              .info("says hello world!")
              .input(0)
              .locality(USER)
              .privacy(ADMIN)
              .action(ctx -> sender.send("Hello world!", ctx.chatId()))
              .post(ctx -> sender.send("Bye world!", ctx.chatId()))
              .build();
}

Here is a breakdown of the above code snippet:

• .name() - the name of the ability (essentially, this is the command)
• .info() - provides information for the command
  • More on this later, but it basically centralizes command information in-code.
• .input() - the number of input arguments needed, 0 is for do-not-care
• .locality() - this answers where you want the ability to be available
  • In GROUP, USER private chats or ALL (both)
• .privacy() - this answers who you want to access your ability
  • CREATOR, ADMIN, or everyone as PUBLIC
• .action() - the feature logic resides here (a lambda function that takes a MessageContext)
  • MessageContext provides fast accessors for the chatId, user and the underlying update. It also conforms to the specifications of the basic API.
• .post() - the logic executed after your main action finishes execution

The following is a snippet of how this would look like with the plain basic API.

@Override
   public void onUpdateReceived(Update update) {
       // Global checks...
       // Switch, if, logic to route to hello world method
       // Execute method
   }

   public void sayHelloWorld(Update update) {
       if (!update.hasMessage() || !update.getMessage().isUserMessage() || !update.getMessage().hasText() || update.getMessage.getText().isEmpty())
           return;
       User maybeAdmin = update.getMessage().getFrom();
       /* Query DB for if the user is an admin, can be SQL, Reddis, Ignite, etc...
          If user is not an admin, then return here.
       */

       SendMessage snd = new SendMessage();
       snd.setChatId(update.getMessage().getChatId());
       snd.setText("Hello world!");

       try {
           sendMessage(snd);
       } catch (TelegramApiException e) {
           BotLogger.error("Could not send message", TAG, e);
       }
   }

I will leave you the choice to decide between the two snippets as to which is more readable, writable and testable.

You can do so much more with abilities, besides plain commands. Head over to our examples to check out all of its features!

Objective Copy Chapter

The AbilityBot abstraction intends to provide the following:

• New feature is a new Ability, a new method - no fuss, zero overhead, no cross-code with other features
• Argument length on a command is as easy as changing a single integer
• Privacy settings per Ability - access levels to Abilities! User | Admin | Creator
• Embedded database - available for every declared ability
• Proxy sender interface - enhances testability; accurate results pre-release

Alongside these exciting core features of the AbilityBot, the following have been introduced:

• The bot automatically maintains an up-to-date set of all the users who have contacted the bot
  • up-to-date: if a user changes their Username, First Name or Last Name, the bot updates the respective field in the embedded-DB
• Backup and recovery for the DB
  • Default implementation relies on JSON/Jackson
• Ban and unban users from accessing your bots
  • The bot will execute the shortest path to discard the update the next time they try to spam
• Promote and demote users as bot administrators
  • Allows admins to execute admin abilities

What's next? Copy Chapter

I am looking forward to:

• Provide a trigger to record metrics per ability
• Implement AsyncAbility
• Maintain integration with the latest updates on the basic API
• Enrich the bot with features requested by the community

Examples Copy Chapter

• Example Bots

Do you have a project that uses AbilityBots? Let us know!

Support Copy Chapter

For issues and features, please use GitHub's issues tab.

For quick feedback, chatting or just having fun, please come and join us in our Telegram Supergroup.

Credits Copy Chapter

This project would not have been made possible had it not been for Ruben's work with the Telegram Bot Java API.
I strongly urge you to check out that project and implement a bot to have a sense of how the basic API feels like.
Ruben has done a great job in supplying a clear and straightforward API that conforms to Telegram's HTTP API.
There is also a chat for that API.

File: telegrambots-extensions/README.md Copy Chapter

Telegram Bot Extensions

Extensions to default bots implementation of Telegram Bots library

Usage Copy Chapter

Just import add the library to your project with one of these options:

1. Using Maven Central Repository:

<dependency>
        <groupId>org.telegram</groupId>
        <artifactId>telegrambots-extensions</artifactId>
        <version>10.2.0</version>
    </dependency>

2. Using Gradle:

implementation 'org.telegram:telegrambots-extensions:10.2.0'