antares-bot 21.3

A Telegram bot framework wrapping many things.

AntaresBot

A Telegram bot framework wrapping many things.

How to use

• pip install antares_bot. If you want to use pika for logging, pip install antares_bot[pika]
• Run antares_bot once in working directory to generate the bot_cfg.py
• Complete the bot_cfg.py
• Write your module in modules directory under working directory
• Run antares_bot to start your bot

Examples

The documentation is far from completed, so here we only introduce a small part of features. We assume that you are already familiar with python-telegram-bot.

Creating a bot with command /echo. First create a file modules/echo.py.

from typing import TYPE_CHECKING

from antares_bot.module_base import TelegramBotModuleBase
from antares_bot.framework import command_callback_wrapper

if TYPE_CHECKING:
    from telegram import Update

    from antares_bot.context import RichCallbackContext


class Echo(TelegramBotModuleBase):
    def mark_handlers(self):
        return [self.echo]

    @command_callback_wrapper
    async def echo(self, update: "Update", context: "RichCallbackContext") -> bool:
        assert update.message is not None
        assert update.message.text is not None
        text = update.message.text.strip()
        if text.startswith("/echo"):
            text = text[len("/echo"):].strip()
        if text:
            await self.reply(text)

antares_bot will automatically scan the files under modules directory and find the class derived from TelegramBotModuleBase, with the same name pattern as the file (CamelCase for class name, snake_case for file name, for example: my_example.py corresponds to class MyExample(TelegramBotModuleBase):)

Module interfaces:

• Override mark_handlers to define the handlers. Handler wrappers can be found in antares_bot.framework.
• Override do_init to init. __init__ is not recommanded.
• Override post_init to run some async function right after all modules are inited.
• Override do_stop to run some async function when exiting.

We use contexts to store the needed information for sending a message, so you only need to pass the message text when using the method reply.

Methods sending texts like reply (defined in TelegramBotBaseWrapper, bot_method_wrapper.py) have 4 different versions. These methods will automatically split the long text into parts, so it may send many messages. The original version returns id of the last message. V2 returns a list of ids of all messages (sorted). V3 returns the last Message object, and V4 returns all Message objects (sorted).

Creating a bot with command /timer

import time
from typing import TYPE_CHECKING

from antares_bot.framework import command_callback_wrapper
from antares_bot.module_base import TelegramBotModuleBase
from antares_bot.context_manager import callback_job_wrapper


if TYPE_CHECKING:
    from telegram import Update

    from antares_bot.context import RichCallbackContext


class Timer(TelegramBotModuleBase):
    def mark_handlers(self):
        return [self.timer]

    @command_callback_wrapper
    async def timer(self, update: "Update", context: "RichCallbackContext") -> bool:
        assert update.message is not None
        assert update.message.text is not None

        @callback_job_wrapper
        async def cb(context_new):
            await self.reply("Time up!")
        self.job_queue.run_once(cb, 5, name=f"{time.time()}")
        return True

We use callback_job_wrapper to wrap the outer context for the nested function cb, and thus reply can reply to the correct message after 5 seconds.

i18n:

from antares_bot.basic_language import BasicLanguage as Lang
await self.send_to(self.get_master_id(), Lang.t(Lang.UNKNOWN_ERROR))

You can define any i18n config like Lang.UNKNOWN_ERROR

UNKNOWN_ERROR = {
    "zh-CN": "哎呀，出现了未知的错误呢……",
    "en": "Oops, an unknown error occurred...",
}

Call set_lang for each user to define their language.

Custom commands:

• /exec execute some python code (master only). self is defined to be the TelegramBot object in bot_inst.py.

  /exec import objgraph
  return list(map(lambda x:x.misfire_grace_time, objgraph.by_type("Job")))
  # Execution succeeded, return value: [60, 60]
  

• restart, stop restart/stop the bot (master only). If AntaresBotConfig.SYSTEMD_SERVICE_NAME is configured, /restart will try to call systemctl restart for you. If AntaresBotConfig.PULL_WHEN_STOP is configured, these two commands will perform git pull.

• get_id see /help get_id.

• help check the docstring of command. For more information see /help help.

• debug_mode switch the logging level to DEBUG (master only).

Also, you can start the bot by yourself, without calling antares_bot in the command line.

if __name__ == "__main__":
    from antares_bot import __main__
    inst = __main__.bootstrap()
    inst.run()

Note

• Only support Python version >= 3.10