#!/bin/bash

# Build QEMU image, example:
# qemu-system-x86_64 -drive file=$QEMU_IMAGE/OpenCore.RO.raw -serial stdio \
#   -usb -device usb-kbd -device usb-mouse -s -m 8192

cd "$(dirname "$0")" || exit 1

if [ ! -f boot ] || [ ! -f boot0 ] || [ ! -f boot1f32 ]; then
  echo "Boot files are missing from this package!"
  echo "You probably forgot to build DuetPkg first."
  exit 1
fi

if [ "$(which qemu-img)" = "" ]; then
  echo "QEMU installation missing"
  exit 1
fi

if [ ! -d ROOT ]; then
  echo "No ROOT directory with ESP partition contents"
  exit 1
fi

rm -f OpenCore.dmg.sparseimage OpenCore.RO.raw OpenCore.RO.dmg
hdiutil create -size 200m  -layout "UNIVERSAL HD"  -type SPARSE  -o OpenCore.dmg
newDevice=$(hdiutil attach -nomount OpenCore.dmg.sparseimage |head -n 1 |  awk  '{print $1}')
echo newdevice "$newDevice"

diskutil partitionDisk "${newDevice}" 1 MBR fat32 TEST R

# boot install script
diskutil list
N=$(echo "$newDevice" | tr -dc '0-9')
echo "Will be installed to Disk ${N}"


if [[ ! $(diskutil info disk"${N}" |  sed -n 's/.*Device Node: *//p') ]]
then
  echo Disk "$N" not found
  exit 1
fi

FS=$(diskutil info disk"${N}"s1 | sed -n 's/.*File System Personality: *//p')
echo "$FS"

if [ "$FS" != "MS-DOS FAT32" ]
then
  echo "No FAT32 partition to install"
  exit 1
fi

# Write MBR
sudo fdisk -f boot0 -u /dev/rdisk"${N}"

diskutil umount disk"${N}"s1
sudo dd if=/dev/rdisk"${N}"s1 count=1  of=origbs
cp -v boot1f32 newbs
sudo dd if=origbs of=newbs skip=3 seek=3 bs=1 count=87 conv=notrunc
dd if=/dev/random of=newbs skip=496 seek=496 bs=1 count=14 conv=notrunc
sudo dd if=newbs of=/dev/rdisk"${N}"s1
diskutil mount disk"${N}"s1

cp -v boot "$(diskutil info  disk"${N}"s1 |  sed -n 's/.*Mount Point: *//p')"
cp -rv ROOT/* "$(diskutil info  disk"${N}"s1 |  sed -n 's/.*Mount Point: *//p')"

if [ "$(diskutil info  disk"${N}" |  sed -n 's/.*Content (IOContent): *//p')" == "FDisk_partition_scheme" ]
then
sudo fdisk -e /dev/rdisk"$N" <<-MAKEACTIVE
p
f 1
w
y
q
MAKEACTIVE
fi

hdiutil detach "$newDevice"
hdiutil convert -format UDRO OpenCore.dmg.sparseimage -o OpenCore.RO.dmg 
qemu-img convert -f dmg -O raw OpenCore.RO.dmg OpenCore.RO.raw