#!/bin/bash

. ${SCRIPTS:-/}start-utils
export SKIP_LOG4J_CONFIG=true

isDebugging && set -x

: ${VANILLA_VERSION?}
# stable, dev
: ${MAGMA_CHANNEL:=stable}


magmaDownloadServer() {
  url=${1?}
  tagName=${2?}
  markerFile=${3?}

  export SERVER="/data/magma-server-${VANILLA_VERSION}.jar"

  log "Downloading Magma server file for ${VANILLA_VERSION} @ ${tagName}"
  if ! curl -o /data/magma-server-${VANILLA_VERSION}.jar -fsSL "$url"; then
    log "ERROR failed to download Magma server from $url (status=$?)"
    exit 1
  fi

  echo -n "$SERVER" > "$markerFile"
}

magmaHandleInstaller() {
  url=${1?}
  tagName=${2?}
  markerFile=${3?}

  installerFile="magma-installer-${VANILLA_VERSION}-${tagName}.jar"
  log "Downloading Magma installer file for ${VANILLA_VERSION} @ ${tagName}"
  if ! curl -o "$installerFile" -fsSL "$url"; then
    log "ERROR failed to download Magma installer from $url (status=$?)"
    exit 1
  fi

  echo "forge" > "$markerFile"

  export FORGE_INSTALLER="$installerFile"
  export FORGE_INSTALLER_CUSTOM_VERSION="$tagName"

  # now hand off the rest to forge
  exec ${SCRIPTS:-/}start-deployForge "$@"
}

latestMeta=$(curl -fsSL https://api.magmafoundation.org/api/resources/Magma/${VANILLA_VERSION}/${MAGMA_CHANNEL}/latest || exit $?)
if [ $? != 0 ]; then
  log "ERROR failed to locate latest Magma info for ${VANILLA_VERSION} in channel ${MAGMA_CHANNEL} (error=$?)"
  exit 1
fi

tagName=$(echo "${latestMeta}" | jq -r '.tag_name')
markerFile=".magma-installed-${VANILLA_VERSION}-${tagName}"
if [ -f "${markerFile}" ]; then
  installedTagName=$(cat "${markerFile}")
fi

if [ ! -f "${markerFile}" ]; then

  if versionLessThan 1.16; then
    assetType=server
  else
    assetType=installer
  fi

  assetUrl=$(echo "${latestMeta}" | jq -r ".assets | .[].browser_download_url | select(test(\"${assetType}\"))")
  if [ $? != 0 ] || [ -z "$assetUrl" ]; then
    log "ERROR failed to extract ${assetType} asset type for ${VANILLA_VERSION} in channel ${MAGMA_CHANNEL}"
    exit 1
  fi

  if [[ ${assetType} = server ]]; then
    magmaDownloadServer "$assetUrl" "$tagName" "$markerFile"
  else
    magmaHandleInstaller "$assetUrl" "$tagName" "$markerFile"
  fi
else
  export SERVER=$(cat "${markerFile}")

  if [[ $SERVER == "forge" ]]; then
    export FORGE_INSTALLER="magma-installer-${VANILLA_VERSION}-${tagName}.jar"
    export FORGE_INSTALLER_CUSTOM_VERSION="$tagName"
    # now hand off the rest to forge
    exec ${SCRIPTS:-/}start-deployForge "$@"
  fi
fi

exec ${SCRIPTS:-/}start-setupWorld $@