#!/bin/bash

set -e -o pipefail

: "${VANILLATWEAKS_FILE:=}"
: "${VANILLATWEAKS_SHARECODE:=}"
: "${REMOVE_OLD_DATAPACKS:=false}"
: "${DATAPACKS_FILE:=}"
: "${REMOVE_OLD_DATAPACKS_DEPTH:=1} "
: "${REMOVE_OLD_DATAPACKS_INCLUDE:=*.zip}"

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

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

# Remove old datapacks
if isTrue "${REMOVE_OLD_DATAPACKS}" && [ -z "${DATAPACKS_FILE}" ]; then
    if [ -d "$out_dir" ]; then
    find "$out_dir" -mindepth 1 -maxdepth ${REMOVE_OLD_DATAPACKS_DEPTH:-16} -wholename "${REMOVE_OLD_DATAPACKS_INCLUDE:-*}" -not -wholename "${REMOVE_OLD_DATAPACKS_EXCLUDE:-}" -delete
  fi
fi

if [[ "$DATAPACKS" ]]; then
  mkdir -p "$out_dir"

  for i in ${DATAPACKS//,/ }
  do
    if isURL "$i"; then
      log "Downloading datapack $i ..."
      if ! get -o "${out_dir}" "$i"; then
        log "ERROR: failed to download from $i into $out_dir"
        exit 2
      fi
    elif [[ -f "$i" && "$i" =~ .*\.zip ]]; then
      log "Copying datapack located at $i ..."
      out_file=$(basename "$i")
      if ! cp "$i" "${out_dir}/$out_file"; then
        log "ERROR: failed to copy from $i into $out_dir"
        exit 2
      fi
    elif [[ -d "$i" ]]; then
      log "Copying datapacks from $i ..."
      cp "$i"/*.zip "${out_dir}"
    else
      log "ERROR Invalid URL or path given in DATAPACKS: $i"
      exit 2
    fi
  done

elif [[ "$DATAPACKS_FILE" ]]; then
  if [ ! -f "$DATAPACKS_FILE" ]; then
    log "ERROR: given DATAPACKS_FILE file does not exist"
    exit 2
  fi

  mkdir -p "$out_dir"

  args=(
    -o "${out_dir}"
    --log-progress-each
    --skip-existing
    --uris-file "${DATAPACKS_FILE}"
  )
  if isTrue "${REMOVE_OLD_DATAPACKS}"; then
    args+=(
    --prune-others "${REMOVE_OLD_DATAPACKS_INCLUDE}"
    --prune-depth "${REMOVE_OLD_DATAPACKS_DEPTH}"
    )
  fi

  if ! get "${args[@]}" ; then
    log "ERROR: failed to retrieve one or more datapacks"
    exit 1
  fi
fi

if [[ ${VANILLATWEAKS_FILE} || ${VANILLATWEAKS_SHARECODE} ]]; then
  mc-image-helper vanillatweaks \
    --output-directory="/data" \
    --world-subdir="${LEVEL:-world}" \
    --share-codes="$VANILLATWEAKS_SHARECODE" \
    --pack-files="$VANILLATWEAKS_FILE"
fi

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