#!/bin/sh -x
set -e

id

FACTORIO_VOL=/factorio
mkdir -p $FACTORIO_VOL
mkdir -p $SAVES
mkdir -p $CONFIG
mkdir -p $MODS
mkdir -p $SCENARIOS
mkdir -p $SCRIPTOUTPUT

if [ ! -f $CONFIG/rconpw ]; then
  # Generate a new RCON password if none exists
  echo $(pwgen 15 1) > $CONFIG/rconpw
fi

if [ ! -f $CONFIG/server-settings.json ]; then
  # Copy default settings if server-settings.json doesn't exist
  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 [ ! -f $CONFIG/map-settings.json ]; then
  cp /opt/factorio/data/map-settings.example.json $CONFIG/map-settings.json
fi

if find -L $SAVES -iname \*.tmp.zip -mindepth 1 -print | grep -q .; then
  # Delete incomplete saves (such as after a forced exit)
  rm -f $SAVES/*.tmp.zip
fi

if [ "$(id -u)" = '0' ]; then
  # Update the User and Group ID based on the PUID/PGID variables
  usermod -o -u $PUID factorio
  groupmod -o -g $PGID factorio
  # Take ownership of factorio data if running as root
  chown -R factorio:factorio $FACTORIO_VOL
  # Make sure we own temp
  #mkdir -p /opt/factorio/temp
  #chown -R factorio:factorio /opt/factorio/temp
  # Drop to the factorio user
  SU_EXEC="su-exec factorio"
fi

if ! find -L $SAVES -iname \*.zip -mindepth 1 -print | grep -q .; then
  # Generate a new map if no save ZIPs exist
  ${SU_EXEC} /opt/factorio/bin/x64/factorio \
    --create $SAVES/_autosave1.zip  \
    --map-gen-settings $CONFIG/map-gen-settings.json \
    --map-settings $CONFIG/map-settings.json
fi

exec ${SU_EXEC} /opt/factorio/bin/x64/factorio \
  --port $PORT \
  --start-server-load-latest \
  --server-settings $CONFIG/server-settings.json \
  --server-banlist $CONFIG/server-banlist.json \
  --rcon-port $RCON_PORT \
  --server-whitelist $CONFIG/server-whitelist.json \
  --use-server-whitelist \
  --server-adminlist $CONFIG/server-adminlist.json \
  --rcon-password "$(cat $CONFIG/rconpw)" \
  --server-id /factorio/config/server-id.json \
  "$@"