Documentation

Construct commands and groups from a command DSL, then registers an event handler on the bot that manages running those commands.

Returns an action to remove the event handler, and the CommandHandler that was constructed.

Command Resolution

To determine if a command was invoked, and if so which command was invoked, the following happens:

1. parsePrefix is invoked, if no prefix is found: stop here.
2. The input is read a word at a time until a matching command is found, fire the "command-not-found" event if not.
3. A Context is built, and the command invoked.

Custom Events

This will fire the following events:

1. CtxCommandError

   Fired when a command returns an error.

2. CommandNotFound

   Fired when a valid prefix is used, but the command is not found.

3. CommandInvoked

   Fired when a command is successfully invoked.

A default interpretation for ParsePrefix that uses a single constant prefix.