#!/bin/bash
set -u

export TYPE=FABRIC

FABRIC_INSTALLER=${FABRIC_INSTALLER:-}
FABRIC_INSTALLER_URL=${FABRIC_INSTALLER_URL:-}
FABRICVERSION=${FABRICVERSION:-LATEST}
if [[ -z $FABRIC_INSTALLER && -z $FABRIC_INSTALLER_URL ]]; then
  echo "Checking Fabric version information."
  case $FABRICVERSION in
    LATEST)
      curl -fsSL https://maven.fabricmc.net/net/fabricmc/fabric-installer/maven-metadata.xml | xq -c . > /tmp/fabric.json
      FABRIC_VERSION=$(< /tmp/fabric.json jq -r ".metadata.versioning.release")
      ;;

    *)
      FABRIC_VERSION=$FABRICVERSION
      ;;
  esac

  FABRIC_INSTALLER="/tmp/fabric-installer-$FABRIC_VERSION.jar"

elif [[ -z $FABRIC_INSTALLER ]]; then
  FABRIC_INSTALLER="/tmp/fabric-installer.jar"
elif [[ ! -e $FABRIC_INSTALLER ]]; then
  echo "ERROR: the given Fabric installer doesn't exist : $FABRIC_INSTALLER"
  exit 2
fi

installMarker=".fabric-installed-${VANILLA_VERSION}-${FABRIC_VERSION:-manual}"

if [[ ! -e $installMarker ]]; then
  if [[ ! -e $FABRIC_INSTALLER ]]; then
    if [[ -z $FABRIC_INSTALLER_URL ]]; then
      echo "Downloading $FABRIC_VERSION"
      downloadUrl="https://maven.fabricmc.net/net/fabricmc/fabric-installer/$FABRIC_VERSION/fabric-installer-$FABRIC_VERSION.jar"
      echo "...trying $downloadUrl"
      curl -o $FABRIC_INSTALLER -fsSL $downloadUrl
    else
      echo "Downloading $FABRIC_INSTALLER_URL ..."
      if ! curl -o $FABRIC_INSTALLER -fsSL $FABRIC_INSTALLER_URL; then
        echo "Failed to download from given location $FABRIC_INSTALLER_URL"
        exit 2
      fi
    fi
  fi

  echo "Installing Fabric $FABRIC_VERSION using $FABRIC_INSTALLER"
  tries=3
  set +e
  while ((--tries >= 0)); do
    java -jar $FABRIC_INSTALLER server -mcversion $VANILLA_VERSION -downloadMinecraft
    if [[ $? == 0 ]]; then
      break
    fi
  done
  set -e
  if (($tries < 0)); then
    echo "Fabric failed to install after several tries." >&2
    exit 10
  fi
  export SERVER=fabric-server-launch.jar
  echo "Using server $SERVER"
  echo $SERVER > $installMarker

else
  export SERVER=$(< $installMarker)
fi

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