#!/bin/bash

set -e -o pipefail

: "${REMOVE_OLD_VANILLATWEAKS:=false}"
: "${VANILLATWEAKS_FILE:=}"
: "${VANILLATWEAKS_SHARECODE:=}"
: "${REMOVE_OLD_VANILLATWEAKS_DEPTH:=1} "
: "${REMOVE_OLD_VANILLATWEAKS_INCLUDE:=*.zip}"

# shellcheck source=start-utils
. "${SCRIPTS:-/}start-utils"
isDebugging && set -x

out_dir=/data/${LEVEL:-world}/datapacks

# Remove old VANILLATWEAKS
if isTrue "${REMOVE_OLD_VANILLATWEAKS}" && [ -z "${VANILLATWEAKS_FILE}" ]; then
    if [ -d "$out_dir" ]; then
    find "$out_dir" -mindepth 1 -maxdepth ${REMOVE_OLD_VANILLATWEAKS_DEPTH:-16} -wholename "${REMOVE_OLD_VANILLATWEAKS_INCLUDE:-*}" -not -wholename "${REMOVE_OLD_VANILLATWEAKS_EXCLUDE:-}" -delete
  fi
fi

# Example: VANILLATWEAKS_SHARECODE=MGr52E
# Code generated from the UI website, typically a alphanumeric 6 digit code.
if [[ "$VANILLATWEAKS_SHARECODE" ]]; then
  VANILLATWEAKS_FILE=/tmp/vanillatweaksfile.json
  SHARECODE_LOOKUP_URL="https://vanillatweaks.net/assets/server/sharecode.php?code=${VANILLATWEAKS_SHARECODE}"
  curl -f $SHARECODE_LOOKUP_URL -o $VANILLATWEAKS_FILE
  if [ ! -f "$VANILLATWEAKS_FILE" ]; then
    log "ERROR: Unable to use share code provided to retreive vanillatweaks file"
    exit 2
  fi
fi

# Use vanillatweaks file to specify VT and datapacks
if [[ "$VANILLATWEAKS_FILE" ]]; then
  if [ ! -f "$VANILLATWEAKS_FILE" ]; then
    log "ERROR: given VANILLATWEAKS_FILE file does not exist"
    exit 2
  fi

  PACKS=$(jq -jc '.packs' $VANILLATWEAKS_FILE)
  if [ ! "$PACKS" ]; then
    log "ERROR: unable to retrieve packs from $VANILLATWEAKS_FILE"
    exit 2
  fi

  VT_VERSION=$(jq -jc '.version' $VANILLATWEAKS_FILE)
  if [ ! "$VT_VERSION" ]; then
    log "ERROR: unable to retrieve version from $VANILLATWEAKS_FILE"
    exit 2
  fi
fi

# Download and unzip packs
if [[ "$PACKS" ]] && [[ "$VT_VERSION" ]]; then
  VT_ZIPDATA_URL=https://vanillatweaks.net/assets/server/zipdatapacks.php
  DOWNLOAD_URL=$(curl -X POST -F "packs=${PACKS}" -F "version=${VT_VERSION}" $VT_ZIPDATA_URL | jq -r '.link')
  if [ ! "$DOWNLOAD_URL" ]; then
    log "ERROR: unable to retrieve DOWNLOAD_URL from vanillatweaks.net!"
    exit 2
  fi

  TEMPZIP=/tmp/vanillatweaks.zip
  if ! get -o $TEMPZIP "https://vanillatweaks.net${DOWNLOAD_URL}"; then 
    log "ERROR: failed to download from ${DOWNLOAD_URL}"
    exit 2
  fi

  mkdir -p "$out_dir"
  if ! unzip -o -d "$out_dir" $TEMPZIP; then
    log "ERROR: failed to unzip the ${PACKS} from ${$TEMPZIP}"
  fi

  # clean up files time!
  rm -f $TEMPZIP
  # cleans up temp vanilla tweaks file download to get stored packs
  if [[ "$VANILLATWEAKS_SHARECODE" ]]; then
    rm -f $VANILLATWEAKS_FILE
  fi
fi

exec "${SCRIPTS:-/}start-setupDatapack" "$@"