CRBot

CRBot is a Discord bot that you can teach to respond to user-defined commands. CRBot is short for "Call and Response Bot". Commands are taught using ?learn <call> <response>, and can retrieve the response with ?call.

It works really well for media retrieval; the Discord unfurler will inline images, videos, etc.

This was initially a weekend project to see if my friends would like it. Now that they haven't banned the bot (or me), I'm in the process of turning this into something that's maintainable.

Example

Jake: ?help
crbot: Type ?help for this message, ?list to list all commands, or
       ?help <command> to get help for a particular command.

Jake: ?learn bearshrug ʅʕ•ᴥ•ʔʃ
crbot: Learned about bearshrug

One of my friends: What's the weather tomorrow?
Jake: ?bearshrug
crbot: ʅʕ•ᴥ•ʔʃ

Prerequisites

• Redis instance, standard port, no password, DB 0
• A bazel build, running at least 0.5.3
• Add secret.json with single key, bot_token

Running

go run *.go

or

bazel run :crbot

You have to run this with a bot account. You can register a bot account for free at the Discord site. Take the bot ID that you are given, and visit https://discordapp.com/oauth2/authorize?&client_id={$bot_id} in your browser, where {$bot_id} is replaced with the bot ID that you are given from the Discord developers site.

Maintenance

./update.sh will do some basic maintenance of the go modules and Bazel dependencies.

Before sending PR

bazel run :go_default_test from working directory.

If your PR adds features, please add tests in system_test.go that cover your new use cases.

More reading

Blog posts:

• Writing a Discord bot, and techniques for writing effective small programs
• My friends trolled each other with my Discord bot, and how we fixed it