Second iteration of Tsoder. Chat bot for Tsoding streams.

Keep in mind that we are not using any Haskell packages from nixpkgs. All of the dependencies are supposed to be downloaded by cabal or stack during the build.

$ nix-shell
$ cabal sandbox init
$ cabal install happy-1.19.9
$ cabal install --only-dependencies --enable-tests
$ cabal build
$ cabal test
$ cabal run HyperNerd secret.ini database.db

See Nix-style Local Builds for more info

$ nix-shell
$ cabal v2-build
$ cabal v2-test
$ cabal v2-run exe:HyperNerd secret.ini database.db

Native dependencies:

• OpenSSL
• zlib

$ stack build
$ stack exec hlint .
$ stack exec HyperNerd secret.ini database.db

The secret.ini file consist of three optional sections.

[twitch]
nick = HyperNerd
channel = Tsoding
password = <oauth-token>
clientId = <client-id-token>
owner = <your-name>

[discord]
authToken = <auth-token>
guild = <guild-id>
channels = [<channel-id-1>, <channel-id-2>, ... ]

[github]
apiKey = <oauth-token>

With secrets existing in volume defined in docker-compose.yaml,

$ docker-compose up --build

$ docker build --target app -t hypernerd .
$ mkdir hypernerd-state
$ cp secret.ini hypernerd-state
$ docker create -v /absolute/path/to/hypernerd-state/:/tmp/hypernerd/ \
                --name hypernerd-bot hypernerd
$ docker start -a hypernerd-bot
$ docker stop hypernerd-bot
$ docker exec -it hypernerd-bot sh

To trigger a Markov chain response, just mention the bot in the chat.

The Markov model is a csv file that is generated from the logs in the bot's database file using the Markov CLI utility:

$ cabal exec Markov train database.db markov.csv

This command will produce the markov.csv file.

$ cabal exec HyperNerd secret.ini database.db markov.csv

The markov.csv file is not automatically updated. To update the file with the new logs you have to run the Markov CLI utility again.

You can assign a command alias to any command:

<user> !test
<bot> test
<user> !addalias foo test
<user> !foo
<bot> test

The aliases are "redirected" only one level deep meaning that transitive aliases are not supported:

<user> !addalias bar foo
<user> !bar
*nothing, because !bar is redirected to !foo, but further redirect from !foo to !test does not happen*

Motivation to not support transitive aliases is the following:

• They are not needed in most of the cases. Generally you just have a main command and a bunch of aliases to it.
• Support for transitive aliases requires to traverse and maintain a "tree" of aliases, which complicates the logic and degrades the performance.

• !addquote <quote-text> -- Add a quote to the quote database. Available only to subs and mods.
• !delquote <quote-id> -- Delete quote by id. Available only to Tsoding.
• !quote [quote-id] -- Query quote from the quote database.

You can support my work via

• Twitch channel: https://www.twitch.tv/subs/tsoding
• Patreon: https://www.patreon.com/tsoding