This is a simple mattermost bot for reminders.
Run as:
guix shell guile guile-sqlite3 guile-json -- ./mattermost.scm url 7777 hook-id [tokens]
Where hook-id is the generated key of the incoming webhook, allowing
the bot to post. Tokens is a list of at least one token, which is
generated when registering the slash command in the first place.
The bot writes reminders to a sqlite database file mattermost.db. A
separate thread polls the database to see if any reminders require
action.
Run tests: guile -s tests.scm
License: AGPL 3.0 or later.