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royalnet/docs_source/creatingacommand.rst
2019-08-29 17:56:01 +02:00

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.. currentmodule:: royalnet.commands
Royalnet Commands
====================================
A Royalnet Command is a small script that is run whenever a specific message is sent to a Royalnet interface.
A Command code looks like this: ::
from royalnet.commands import Command
class PingCommand(Command):
name = "ping"
description = "Play ping-pong with the bot."
def __init__(self, interface):
# This code is run just once, while the bot is starting
super().__init__()
async def run(self, args, data):
# This code is run every time the command is called
await data.reply("Pong!")
Creating a new Command
------------------------------------
First, think of a ``name`` for your command.
It's the name your command will be called with: for example, the "spaghetti" command will be called by typing **/spaghetti** in chat.
Try to keep the name as short as possible, while staying specific enough so no other command will have the same name.
Next, create a new Python file with the ``name`` you have thought of.
The previously mentioned "spaghetti" command should have a file called ``spaghetti.py``.
Then, in the first row of the file, import the :py:class:`Command` class from :py:mod:`royalnet`, and create a new class inheriting from it: ::
from royalnet.commands import Command
class SpaghettiCommand(Command):
...
Inside the class, override the attributes ``name`` and ``description`` with respectively the **name of the command** and a **small description of what the command will do**: ::
from royalnet.commands import Command
class SpaghettiCommand(Command):
name = "spaghetti"
description = "Send a spaghetti emoji in the chat."
Now override the :py:meth:`Command.run` method, adding the code you want the bot to run when the command is called.
To send a message in the chat the command was called in, you can use the :py:meth:`CommandData.reply` method: ::
from royalnet.commands import Command
class SpaghettiCommand(Command):
name = "spaghetti"
description = "Send a spaghetti emoji in the chat."
async def run(self, args, data):
data.reply("🍝")
And it's done! The command is now ready to be used in a bot!