#!/bin/bash

. /start-utils

shopt -s nullglob

#umask 002
export HOME=/data

if [ ! -e /data/eula.txt ]; then
  EULA="${EULA,,}"
  if [ "$EULA" != "true" ]; then
    log ""
    log "Please accept the Minecraft EULA at"
    log "  https://account.mojang.com/documents/minecraft_eula"
    log "by adding the following immediately after 'docker run':"
    log "  -e EULA=TRUE"
    log ""
    exit 1
  fi

  echo "# Generated via Docker on $(date)" > /data/eula.txt

  if ! echo "eula=$EULA" >> /data/eula.txt; then
    log "ERROR: unable to write eula to /data. Please make sure attached directory is writable by uid=${UID}"
    exit 2
  fi
fi


log "Running as uid=$(id -u) gid=$(id -g) with /data as '$(ls -lnd /data)'"

if ! touch /data/.verify_access; then
  log "ERROR: /data doesn't seem to be writable. Please make sure attached directory is writable by uid=$(id -u)"
  exit 2
fi

rm /data/.verify_access || true

if [[ $PROXY ]]; then
    export http_proxy="$PROXY"
    export https_proxy="$PROXY"
    log "INFO: Giving proxy time to startup..."
    sleep 5
fi

export SERVER_PROPERTIES=/data/server.properties
export VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json

case "X$VERSION" in
  X|XLATEST|Xlatest)
    VANILLA_VERSION=$(curl -fsSL $VERSIONS_JSON | jq -r '.latest.release')
  ;;
  XSNAPSHOT|Xsnapshot)
    VANILLA_VERSION=$(curl -fsSL $VERSIONS_JSON | jq -r '.latest.snapshot')
  ;;
  X[1-9]*)
    VANILLA_VERSION=$VERSION
  ;;
  *)
    VANILLA_VERSION=$(curl -fsSL $VERSIONS_JSON | jq -r '.latest.release')
  ;;
esac
export VANILLA_VERSION
log "Resolved version given ${VERSION} into ${VANILLA_VERSION}"

cd /data || exit 1

export ORIGINAL_TYPE=${TYPE^^}

if isTrue "${ENABLE_AUTOPAUSE}"; then
  log "Autopause functionality enabled"

  # update server port to listen to
  regseq="^\s*sequence\s*=\s*$SERVER_PORT\s*$"
  linenum=$(grep -nm1 sequence /autopause/knockd-config.cfg | cut -d : -f 1 | tail -n1)
  if ! [[ $(awk "NR==$linenum" /autopause/knockd-config.cfg) =~ $regseq ]]; then
    sed -i "${linenum}s/sequence.*/sequence = $SERVER_PORT/" /autopause/knockd-config.cfg
    log "Updated server port in knockd config"
  fi
  # update rcon port to listen to
  regseq="^\s*sequence\s*=\s*$RCON_PORT\s*$"
  linenum=$(grep -nm2 sequence /autopause/knockd-config.cfg | cut -d : -f 1 | tail -n1)
  if ! [[ $(awk "NR==$linenum" /autopause/knockd-config.cfg) =~ $regseq ]]; then
    sed -i "${linenum}s/sequence.*/sequence = $RCON_PORT/" /autopause/knockd-config.cfg
    log "Updated rcon port in knockd config"
  fi

  if ! [[ $AUTOPAUSE_PERIOD =~ ^[0-9]+$ ]]; then
    AUTOPAUSE_PERIOD=10
    export AUTOPAUSE_PERIOD
    log "Warning: AUTOPAUSE_PERIOD is not numeric, set to 10 (seconds)"
  fi
  if [ "$AUTOPAUSE_PERIOD" -eq "0" ] ; then
    AUTOPAUSE_PERIOD=10
    export AUTOPAUSE_PERIOD
    log "Warning: AUTOPAUSE_PERIOD must not be 0, set to 10 (seconds)"
  fi
  if ! [[ $AUTOPAUSE_TIMEOUT_KN =~ ^[0-9]+$ ]] ; then
    AUTOPAUSE_TIMEOUT_KN=120
    export AUTOPAUSE_TIMEOUT_KN
    log "Warning: AUTOPAUSE_TIMEOUT_KN is not numeric, set to 120 (seconds)"
  fi
  if ! [[ $AUTOPAUSE_TIMEOUT_EST =~ ^[0-9]+$ ]] ; then
    AUTOPAUSE_TIMEOUT_EST=3600
    export AUTOPAUSE_TIMEOUT_EST
    log "Warning: AUTOPAUSE_TIMEOUT_EST is not numeric, set to 3600 (seconds)"
  fi
  if ! [[ $AUTOPAUSE_TIMEOUT_INIT =~ ^[0-9]+$ ]] ; then
    AUTOPAUSE_TIMEOUT_INIT=600
    export AUTOPAUSE_TIMEOUT_INIT
    log "Warning: AUTOPAUSE_TIMEOUT_INIT is not numeric, set to 600 (seconds)"
  fi

  if [[ -n $MAX_TICK_TIME ]] ; then
    log "Warning: MAX_TICK_TIME is non-default, for autopause to work properly, this check should be disabled (-1 for versions >= 1.8.1)"
  else
    if versionLessThan 1.8.1; then
      # 10 years
      MAX_TICK_TIME=315360000000
    else
      MAX_TICK_TIME=-1
    fi
    export MAX_TICK_TIME
  fi

  /autopause/autopause-daemon.sh &
fi

log "Resolving type given ${TYPE}"
case "${TYPE^^}" in
  *BUKKIT|SPIGOT)
    exec /start-deployBukkitSpigot "$@"
  ;;

  PAPER)
    exec /start-deployPaper "$@"
  ;;

  TUINITY)
    exec /start-deployTuinity "$@"
  ;;

  FORGE)
    exec /start-deployForge "$@"
  ;;

  FABRIC)
    exec /start-deployFabric "$@"
  ;;

  FTB|CURSEFORGE)
    exec /start-deployFTB "$@"
  ;;

  VANILLA)
    exec /start-deployVanilla "$@"
  ;;

  SPONGEVANILLA)
    exec /start-deploySpongeVanilla "$@"
  ;;

  CUSTOM)
    exec /start-deployCustom "$@"
  ;;

  CURSE_INSTANCE)
    exec /start-validateCurseInstance "$@"
  ;;

  MAGMA)
    exec /start-magma "$@"
  ;;

  *)
      log "Invalid type: '$TYPE'"
      log "Must be: VANILLA, FORGE, BUKKIT, SPIGOT, PAPER, FTB, CURSEFORGE, SPONGEVANILLA"
      exit 1
  ;;

esac