The app monitors server console output and attached to its rcon (I run them both in Docker compose).
There are no mods, but you'll have to add the provided control.lua to the server's save file.
The event callback mechanism is used to extract most of the available events so you can scratch your ML itch.
There are no databases, and the app runtime comes from its docker image.
The app acts a bridge between Factorio headless server and a Telegram group. It should be easy to add other backends too, PRs welcome.
Group members can chat with players and query server status with bot commands.
Some of the events are sent to the group: player related (joins/quits) and global (research finished, rocket launched).
PS: the script is tuned to the Space Exploration mod so parts of it may have to be removed for vanilla games.
Fun