#!/usr/bin/env zsh
# Copyright (c) 2017 Dyne.org Foundation
# live-sdk is written and maintained by Ivan J. <parazyd@dyne.org>
#
# This file is part of live-sdk
# devuan-minimal-live.blend is maintained by KatolaZ <katolaz@freaknet.org>
#
# This source code is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this source code. If not, see <http://www.gnu.org/licenses/>.

BLENDPATH="${BLENDPATH:-$(dirname $0)}"

source "$BLENDPATH/config"

blend_release_path="$BLENDPATH/$release/"
blend_scripts="${blend_release_path}/scripts"

###source $BLENDPATH/$release/devuan-minimal-live.release

blend_preinst() {
	fn blend_preinst
	req=(blend_name username userpass)
	ckreq || return 1

	notice "executing $blend_name preinst"

    cat <<EOF | sudo tee "$strapdir/add-user" >/dev/null
#!/bin/sh
useradd -s /bin/bash -m "${username}" || exit 1
echo "${username}:${userpass}" | chpasswd || exit 1
EOF
    chroot-script -d add-user || { zerr; return 1; }

    notice "copying blend-specific debs into $R/extra/custom-packages"

    sudo mkdir -p "$strapdir/extra_packages" || { zerr; return 1; }
    sudo cp -fv "$blend_release_path"/custom_debs/*.deb "$strapdir/extra_packages" || { zerr; return 1; }
    cat << EOF | sudo tee "$strapdir/install-custpackages" >/dev/null
#!/bin/sh
cd extra_packages
dpkg -i *_all.deb *_${arch}.deb
apt-get -f install
cd - >/dev/null
rm -rf extra_packages
EOF
    chroot-script -d install-custpackages || { zerr; return 1; }
}

blend_postinst() {
	fn blend_postinst
	req=(strapdir blend_name)
	ckreq || return 1

	notice "executing $blend_name postinst"

	[[ -n "$MKEFI" ]] && {
		iso_make_efi
		iso_write_grub_cfg
	}

	pushd "$strapdir"
		sudo rsync -avx --no-o --no-g "$blend_release_path"/rootfs_overlay/* . || { zerr; return 1; }
		sudo chmod 755 etc/init.d/boot_beep
	popd

	blend_finalize || { zerr; return 1 }
}

iso_write_isolinux_cfg() {
	fn iso_write_isolinux_cfg "(override)"
	req=(workdir arch username)
	ckreq || return 1

	notice "copying isolinux overlay"
	sudo mkdir -p "$workdir"/binary/{live,isolinux}
	sudo cp -rav "$blend_release_path"/isolinux_overlay/* "$workdir"/binary/isolinux/

	#[[ -n "$hookscripts" ]] && {
	#	sudo cp -av "$BLENDPATH"/hooks "$workdir"/binary/live/
	#}
}

# create /boot and /efi for uefi.
# uefi code borrowed and adapted from David Hare, who borrowed and adapted it
# from similar scripts by Colin Watson and Patrick J. Volkerding.
iso_make_efi() {
set -x
	fn iso_make_efi
	req=(workdir efi_work strapdir)
	ckreq || return 1

	notice "creating efi boot files"

	tempdir="$(mktemp -d /tmp/work_temp.XXXX)"
	# for initial grub.cfg
	mkdir -p "$tempdir"/boot/grub

	if [ "$arch" = amd64 ] ; then
		grubarch="x86_64-efi"
	elif [ "$arch" = i386 ] ; then
		grubarch="i386-efi"
	fi

	cat >"$tempdir"/boot/grub/grub.cfg <<EOF
search --file --set=root /isolinux/isolinux.cfg
set prefix=(\$root)/boot/grub
source \$prefix/${grubarch}/grub.cfg
EOF

	mkdir -p "$efi_work"
	pushd "$efi_work"

	# start with empty directories.
	rm -rf boot; mkdir -p boot/grub/${grubarch}
	rm -rf efi ; mkdir -p efi/boot

	# second grub.cfg file
	for i in $(find $strapdir/usr/lib/grub/${grubarch} -name 'part_*.mod'); do
		print "insmod $(basename $i)" >> boot/grub/${grubarch}/grub.cfg
	done

	# Additional modules so we don't boot in blind mode.
	# I don't know which ones are really needed.
	efimods=(
		efi_gop
		efi_uga
		ieee1275_fb
		vbe
		vga
		video_bochs
		video_cirrus
		jpeg
		png
		gfxterm
	)
	for i in $efimods; do
		print "insmod $i" >> boot/grub/${grubarch}/grub.cfg
	done

	print "source /boot/grub/grub.cfg" >> boot/grub/${grubarch}/grub.cfg

	pushd "$tempdir"
		# make a tarred "memdisk" to embed in the grub image
		tar -cvf memdisk boot

		# make the grub image
		grub-mkimage -O "x86_64-efi" -m "memdisk" -o "bootx64.efi" \
			-p '(memdisk)/boot/grub' \
				search iso9660 configfile normal memdisk tar cat \
				part_msdos part_gpt fat ext2 ntfs ntfscomp hfsplus \
				chain boot linux
	
		grub-mkimage -O "i386-efi" -m "memdisk" -o "bootia32.efi" \
			-p '(memdisk)/boot/grub' \
				search iso9660 configfile normal memdisk tar cat \
				part_msdos part_gpt fat ext2 ntfs ntfscomp hfsplus \
				chain boot linux
	popd

	# copy the grub image to efi/boot (to go later in the device's root)
	cp "$tempdir"/bootx64.efi efi/boot
	cp "$tempdir"/bootia32.efi efi/boot

	# Do the boot image "boot/grub/efiboot.img"
	dd if=/dev/zero of=boot/grub/efiboot.img bs=1K count=1440
	mkfs.vfat -F 12 boot/grub/efiboot.img

	sudo mkdir img-mnt
	sudo mount -o loop boot/grub/efiboot.img img-mnt
	sudo mkdir -p img-mnt/efi/boot
	sudo cp "$tempdir"/bootx64.efi img-mnt/efi/boot/
	sudo cp "$tempdir"/bootia32.efi img-mnt/efi/boot/

	# copy modules and font
	cp -r "$strapdir/usr/lib/grub/${grubarch}"/* "boot/grub/${grubarch}/"

	# if this doesn't work try another font from the same place (grub's default, unicode.pf2, is much larger)
	# Either of these will work, and they look the same to me. Unicode seems to work with qemu. -fsr
	# cp /usr/share/grub/ascii.pf2 boot/grub/font.pf2
	cp $strapdir/usr/share/grub/unicode.pf2 boot/grub/font.pf2

	# copy splash
	sudo cp -rav "$blend_release_path"/isolinux_overlay/splash.png boot/grub/splash.png

	# Cleanup efi temps
	sudo umount img-mnt
	sudo rmdir img-mnt
	rm -rf "$tempdir"

	popd


	# Copy efi files to iso
	pushd $workdir
	sudo rsync -avx "$efi_work"/boot binary/
	sudo rsync -avx "$efi_work"/efi  binary/
	popd
set +x
}


## UNUSED
iso_write_grub_cfg() {
	fn iso_write_grub_cfg "(override)"
	req=(workdir arch username)
	ckreq || return 1

	notice "writing grub configuration"

	# Do the main grub.cfg (which gets loaded last):
	cat <<EOF | sudo tee ${workdir}/binary/boot/grub/grub.cfg
if loadfont $prefix/font.pf2 ; then
  set gfxmode=640x480
  insmod efi_gop
  insmod efi_uga
  insmod video_bochs
  insmod video_cirrus
  insmod gfxterm
  insmod jpeg
  insmod png
  terminal_output gfxterm
fi

background_image /boot/grub/splash.png
set menu_color_normal=white/black
set menu_color_highlight=dark-gray/white
set timeout=6
play 480 440 1

menuentry "Devuan Live Minimal (std)" {
    set gfxpayload=keep
    linux   /live/vmlinuz boot=live noautologin vga=auto
    initrd  /live/initrd.img
}

menuentry "Devuan Live Minimal (access)" {
	set gfxpayload=keep
	linux /live/vmlinuz boot=live noautologin 4 vga=normal
	initrd /live/initrd.img
}

menuentry "Devuan Live Minimal (std-toram)" {
    set gfxpayload=keep
    linux   /live/vmlinuz boot=live noautologin vga=auto toram
    initrd  /live/initrd.img
}

menuentry "Devuan Live Minimal (access-toram)" {
	set gfxpayload=keep
	linux /live/vmlinuz boot=live noautologin 4 vga=normal toram
	initrd /live/initrd.img
}

menuentry "Devuan Live Minimal (no probe)" {
    set gfxpayload=keep
    linux   /live/vmlinuz boot=live noapic noapm nodma nomce nolapic nosmp vga=auto
    initrd  /live/initrd.img
}

menuentry "Memory test" {
	linux /live/memtest
}

EOF
}

## put the "create_initrd.sh" script

##func
put_create_initrd(){

	sudo cp ${blend_scripts}/create_initrd.sh ${strapdir}/ >/dev/null

	## Now we make it executable
	sudo chmod 755 ${strapdir}/create_initrd.sh
}

## put the "finalize" script, that does the final work

## func
put_finalize(){

	cat <<EOF | sudo tee ${strapdir}/finalize >/dev/null
#!/bin/sh

## permissions
for i in cdrom floppy audio dip video plugdev netdev lpadmin scanner; do
	gpasswd -a ${username} \$i
done

chsh -s "${default_shell}" ${username}
chown -R 1000:1000 /home/${username}

rm -f /etc/fstab
rm -f /etc/popularity-contest.conf
rm -f /var/lib/dbus/machine-id

# For ascii if no display manager is used. Maybe this should have a
# contitional that's turned on/off in the config?
# echo "needs_root_rights=yes" >> /etc/X11/Xwrapper.config

# Disable contrib and non-free after installing firmware.
#sed -i 's/ contrib//g' /etc/apt/sources.list
#sed -i 's/ non-free-firmware//g' /etc/apt/sources.list

## Disable proposed-updates
#sed -i '/-proposed-updates/s/^/#/g' /etc/apt/sources.list

## replace pkgmaster with deb.devuan.org
sed -i 's/pkgmaster/deb/g' /etc/apt/sources.list
apt update

# for amd64 only at this time (for bios/uefi compat)
if ls /boot | grep amd64 ; then
	apt-get download grub-pc
	apt-get download grub-efi-ia32
fi

# download firmware packages
mkdir /firmware
cd /firmware
apt download atmel-firmware bluez-firmware dahdi-firmware-nonfree firmware-amd-graphics firmware-atheros firmware-bnx2 firmware-bnx2x firmware-brcm80211 firmware-cavium firmware-intel-sound firmware-iwlwifi firmware-libertas firmware-linux-free firmware-linux-nonfree firmware-misc-nonfree firmware-myricom firmware-netxen firmware-qlogic firmware-realtek firmware-ti-connectivity firmware-zd1211
cd -

## insert  service boot_beep
insserv boot_beep

##  Configure framebuffer
setcap 'cap_sys_tty_config+ep' /usr/bin/fbterm
chmod u+s /usr/bin/fbterm

## Make initramfs

SLIM_INITRD=initrd_devuan.img
MICRO_INITRD=/boot/initrd.img
INITRD_COMPR="xz --check=crc32 --x86 -6 -"
  

/create_initrd.sh /initrd.img /boot/\${SLIM_INITRD} \
    "\${INITRD_COMPR}" \${MICRO_INITRD}

rm -f $(realpath /initrd.img)
rm -f $(realpath /initrd.img.old)

echo "====> Content of /boot before rm:"

ls /boot

rm -f /initrd.img
rm -f /initrd.img.old

KERN_ORIG=\$(ls /boot/initrd.img-* | head -1 | cut -d "-" -f 2-)

rm -f /boot/initrd.img-*


echo "====> Content of /boot AFTER rm:"

ls /boot

ln -s \${MICRO_INITRD} /initrd.img



## rm create_initrd.sh
rm /create_initrd.sh

## package list
dpkg -l | awk '/^ii/ { print \$2 " " \$3 }' > /home/${username}/package_list

##apt-get update
apt-get clean
rm /var/cache/apt/*.bin
updatedb

rm -f /initrd.img
rm -f /initrd.img.old
rm -f /boot/initrd.img-*
ln -s \${MICRO_INITRD} /initrd.img

ln -s \${MICRO_INITRD} /boot/initrd.img-\${KERN_ORIG}


EOF

##	cp ${strapdir}/finalize ${strapdir}/finalize.bak
	
}

## func
# put_packages(){

# 	sudo cp -a "$R/extra/custom-packages/" ${strapdir} 
# }


blend_finalize() {
	fn blend_finalize
	req=(strapdir username default_shell)
	ckreq || return 1

	put_create_initrd 
	#put_packages
	
	put_finalize

	#chroot-script -d finalize || zerr
	chroot-script finalize || zerr

	printf "copying ${strapdir}/boot/initrd.img to ${workdir}/binary/live/..."
	sudo cp -L ${strapdir}/boot/initrd.img ${workdir}/binary/live/
	printf "done\n"
	printf "copying memtest86 to /binary/live\n"
 	sudo cp ${strapdir}/boot/memtest86+.bin ${workdir}/binary/live/memtest
	printf "done\n"
	echo "done"
}