#!/usr/bin/env bash

cd /var/lib/Factorio # You'll want to change this path to wherever you're running the Factorio server from.

save_name="default"  # Set this to the name of your save file.

# Don't change this unless you know what you're doing.
# Set this to the custom parameters you want the --create command to use.
extra_params_create="--map-gen-settings ./data/map-gen-settings.json --map-settings ./data/map-settings.json"

# Don't change this unless you know what you're doing.
# Set this to the custom parameters you want the --start_server command to use.
extra_params_start_server="--server-settings ./data/server-settings.json"

# This handles automatically updating the Factorio binary.
wget https://factorio.com/get-download/stable/headless/linux64 -O factorio_headless.tar.xz

tar -xf factorio_headless.tar.xz --strip-components=1 --overwrite

rm -f factorio_headless.tar.xz

# This checks if the ./saves/$save_name.zip save file exists or not...
if [ ! -f "./saves/${save_name}.zip" ]; then
    # ...if not, create the save file
    ./bin/x64/factorio ${extra_params_create} --create "./saves/${save_name}.zip"
fi

# This creates a byobu session that starts the server.
byobu new-session -d -s factorio "./bin/x64/factorio ${extra_params_start_server} --start-server ./saves/${save_name}.zip"

# This attaches the current terminal to the byobu session.
# Comment this out if you don't want this functionality.
byobu attach -t factorio