#!/usr/bin/env bash
# cpu2asr
# Turn CPU bundled discs into ASR-ready DMG
# @author Filipp Lepalaan <filipp@mcare.fi>
# @package mtk

if [[ $(id -u) != 0 ]]; then
  echo "This tool must be roon as root" 2>&1
  exit 1
fi

if [[ $# -lt 3 ]]; then
  echo "usage: cpu2asr disc1 disc2 image" 2>&1
  exit 1
fi

TARGET_SIZE=30g
TARGET_IMAGE=""
TARGET_MP=""

ASR_TARGET=$3
SHADOW=/Shadow
SPARSE_MP="/Volumes/${ASR_TARGET}"

echo "Creating target image..."

/usr/bin/hdiutil create -size $TARGET_SIZE \
	-type SPARSE -fs HFS+J -volname "${ASR_TARGET}" \
	-uid 0 -gid 80 -mode 0775 -attach "${ASR_TARGET}"

#/usr/bin/hdiutil mount "./${ASR_TARGET}.sparseimage" -mountpoint "${SPARSE_MP}"
/usr/sbin/vsdbutil -a "${SPARSE_MP}"
/usr/sbin/diskutil enableOwnership "${SPARSE_MP}"

echo "Installing OS..."

DISC1="/Volumes/cpu2asr_disc1"
/usr/bin/hdiutil mount "$1" -mountpoint "${DISC1}" -shadow "$SHADOW" -nobrowse
PACKAGE="${DISC1}/System/Installation/Packages/OSInstall.mpkg"

if [[ $(/usr/bin/file -b "$PACKAGE") == "xar archive version 1, SHA-1 checksum" ]]; then
  echo "Patching OS installer..." 2>&1
  DIR="$(dirname $PACKAGE)"
  /usr/bin/xar -xf "$PACKAGE"
  /usr/bin/sed -i "" "s/return false/return true/g" "./Distribution"
  /usr/bin/xar -cf "$PACKAGE" "./Resources" "./Distribution"
  /bin/rm -r ./Resources ./Distribution
fi

/usr/sbin/installer -pkg  "${PACKAGE}" -target "${SPARSE_MP}"
/usr/bin/hdiutil eject "${DISC1}"
/bin/rm "${SHADOW}"

echo "Installing Apps..."
DISC2="/Volumes/cpu2asr_disc2"
/usr/bin/hdiutil mount "$2" -mountpoint "${DISC2}" -shadow "$SHADOW" -nobrowse

/usr/bin/sed -i "" "s/return false/return true/g" \
	"${DISC2}/Install Bundled Software.mpkg/Contents/Install Bundled Software.dist"

/usr/sbin/installer -pkg "${DISC2}/Install Bundled Software.mpkg" -target "${SPARSE_MP}"
# run fsck..
/usr/bin/hdiutil eject "${DISC2}"

# Install additional packages...

echo "Creating final image..."
/usr/bin/hdiutil create -srcfolder "${SPARSE_MP}" "asr.${ASR_TARGET}.dmg"
/usr/bin/hdiutil eject "${SPARSE_MP}"

/usr/sbin/asr imagescan --source "asr.${ASR_TARGET}.dmg" \
	--nostream --allowfragmentedcatalog
/bin/rm "${SHADOW}" "${ASR_TARGET}.sparseimage"

echo "All done, have a nice day"
exit 0