#!/bin/sh

is_file_avaiable(){
	disktmp=$(mktemp)
	rm -f $disktmp
	mkdir -p $disktmp || true
	timeout 10 mount -t auto "$1" $disktmp &>/dev/null
	[ -f "$disktmp/$2" ] && [ -b "$1" ]
	status=$?
	umount -lf $disktmp 2>/dev/null
	return $status
}

mountroot()
{
	while [ "$root" == "" ] ; do
		list=$(ls /sys/class/block/ | grep ".*[0-9]$" | grep -v loop | grep -v ram | grep -v nbd | grep -v fd | sed "s|^|/dev/|g")
		for part in $list ; do
			sleep 0.1
			echo "Looking for: $part"
			if is_file_avaiable "$part" "/live/filesystem.squashfs" ; then
				export root=$part
			elif is_file_avaiable "$part" "/mount-me"  ; then
				export home=$part
			fi
		done
	done
}

mount_top()
{
	modprobe iso9660
	modprobe squashfs
	modprobe hfsplus
	modprobe ext4
}

mount_premount()
{
	if cat /proc/cmdline | grep "break=live" >/dev/null ; then
		launch_interactive_shell
	fi
	for mod in dm_mod dm-raid raid0 raid1 raid456 loop ; do
		modprobe $mod || true
	done
	if [ -f /ventoy/hook/arch/ventoy-disk.sh ] ; then
		echo "Loading Ventoy hooks"
		sh /ventoy/hook/arch/ventoy-disk.sh || true
		sleep 0.3
	fi
}

mount_bottom()
{
	mkdir -p /donkey/a # upper
	mkdir -p /donkey/b # workdir
	mkdir -p /live_root/
	mkdir -p ${rootmnt}/
	mkdir -p /source/ # lower
	mount $root ${rootmnt}/ 2> /dev/null
	mount ${rootmnt}/live/filesystem.squashfs /source/ 2> /dev/null
	mount -t overlay -o lowerdir=/source/,upperdir=/donkey/a/,workdir=/donkey/b overlay /live_root
	mount -t tmpfs -o size=100% none /donkey/a
	mount -t tmpfs -o size=100% none /donkey/b
	[ -d /source/merge/ ] && cp -prfv /source/merge/* /live_root/
	mount --bind /live_root ${rootmnt}/
	mkdir ${rootmnt}/cdrom/ 2> /dev/null
	mkdir ${rootmnt}/source/ 2> /dev/null
	mount $root ${rootmnt}/cdrom/ 2> /dev/null
	mount ${rootmnt}/live/filesystem.squashfs ${rootmnt}/source/ 2> /dev/null
	[ "$home" != "" ] && mount $home ${rootmnt}/data/user 2>/dev/null
}