#!/bin/bash

export TYPE=FEED-THE-BEAST

function isURL {
  local value=$1

  if [[ ${value:0:8} == "https://" || ${value:0:7} = "http://" ]]; then
    return 0
  else
    return 1
  fi
}

echo "Looking for Feed-The-Beast server modpack."
if [[ -z $FTB_SERVER_MOD ]]; then
    echo "Environment variable FTB_SERVER_MOD not set."
    echo "Set FTB_SERVER_MOD to the file name of the FTB server modpack."
    echo "(And place the modpack in the /data directory.)"
    exit 2
fi
srv_modpack=${FTB_SERVER_MOD}
if isURL ${srv_modpack}; then
    case $srv_modpack in
      https://www.feed-the-beast.com/*/download)
        break;;
      https://www.feed-the-beast.com/*)
        srv_modpack=${srv_modpack}/download;;
    esac
    file=$(basename $(dirname $srv_modpack))
    downloaded=/data/${file}.zip
    if [ ! -e $downloaded ]; then
      echo "Downloading FTB modpack...
$srv_modpack -> $downloaded"
      curl -sSL -o $downloaded $srv_modpack
    fi
    srv_modpack=$downloaded
fi
if [[ ${srv_modpack:0:5} == "data/" ]]; then
    # Prepend with "/"
    srv_modpack=/${srv_modpack}
fi
if [[ ! ${srv_modpack:0:1} == "/" ]]; then
    # If not an absolute path, assume file is in "/data"
    srv_modpack=/data/${srv_modpack}
fi
if [[ ! -f ${srv_modpack} ]]; then
    echo "FTB server modpack ${srv_modpack} not found."
    exit 2
fi
if [[ ! ${srv_modpack: -4} == ".zip" ]]; then
    echo "FTB server modpack ${srv_modpack} is not a zip archive."
    echo "Please set FTB_SERVER_MOD to a file with a .zip extension."
    exit 2
fi

if [ ! -d ${FTB_DIR} ]; then
  echo "Unpacking FTB server modpack ${srv_modpack} ..."
  mkdir -p ${FTB_DIR}
  unzip -o ${srv_modpack} -d ${FTB_DIR}
  cp -f /data/eula.txt ${FTB_DIR}/eula.txt
fi
export FTB_SERVER_START=${FTB_DIR}/ServerStart.sh
chmod a+x ${FTB_SERVER_START}
sed -i "s/-jar/-Dfml.queryResult=confirm -jar/" ${FTB_SERVER_START}

# Continue to Final Setup
exec /start-finalSetup01World $@