#!/bin/sh -x

set -euo pipefail

SAVES=/factorio/saves
CONFIG=/factorio/config

mkdir -p "$SAVES"
mkdir -p /factorio/mods
mkdir -p "$CONFIG"

if [ ! -f $CONFIG/rconpw ]; then
  pwgen 15 1 >"$CONFIG/rconpw"
fi

if [ ! -f "$CONFIG/server-settings.json" ]; then
  cp /opt/factorio/data/server-settings.example.json "$CONFIG/server-settings.json"
fi

if [ ! -f "$CONFIG/map-gen-settings.json" ]; then
  cp /opt/factorio/data/map-gen-settings.example.json "$CONFIG/map-gen-settings.json"
fi

if ! find -L "$SAVES" -iname \*.zip -mindepth 1 -print | grep -q .; then
  /opt/factorio/bin/x64/factorio \
    --create "$SAVES/_autosave1.zip" \
    --map-gen-settings "$CONFIG/map-gen-settings.json"
fi

exec /opt/factorio/bin/x64/factorio \
  --port 34197 \
  --start-server-load-latest \
  --server-settings "$CONFIG/server-settings.json" \
  --rcon-port 27015 \
  --rcon-password "$(cat "$CONFIG/rconpw")"