#!/bin/sh

LOGGER() {
	echo "[$(date +%D-%H:%M:%S)] [$$] $*" >> /tmp/automount.log
	logger -t "automount[$$]" "$*"
}

if [ "$(uci get fstab.@global[0].auto_mount)" != 1 ]
then
	block mount
	exit
fi

echo "$$" > /tmp/automount.pid
touch -f /tmp/automount.log

case "$HOTPLUG_TYPE,$DEVTYPE" in
block,partition)
	LOGGER "Attached mode: $ACTION"
	sleep 3
	if [ "$ACTION" = remove -o "$ACTION" = add ]
	then
		for disk in $(mount | awk '{print $1}' | grep /dev | egrep -v "rom|mtdblock|loop|overlay");do
			part=$(mount | grep $disk | awk '{print $3}')
			[ ! "$part" ] && continue
			skip_umount=$(lsblk --list $disk > /dev/null 2>&1; echo $?)
			if [ "$skip_umount" != 0 ]
			then
				umount $part 2> /dev/null || umount -l $part 2> /dev/null
				LOGGER "Successfully umounted invisible part [$part]"
				[ ! "$(ls -A $part)" ] && rm -rf $part
			fi
		done
	fi
	if [ "$ACTION" = add ]
	then
		block mount
		for part in $(lsblk --list | egrep -v "mtdblock|loop|overlay" | grep part | awk '{print $1}');do
			skip_mount=$(mount | awk '{print $1}' | grep -q $part ; echo $?)
			fstype=$(block info /dev/$part 2> /dev/null | egrep -o 'TYPE="[0-9a-zA-Z].+' | awk -F '["]' '/TYPE/{print $2}')
			if [ "$skip_mount" = 0 ]
			then
				LOGGER "Already mounted [/dev/$part] on this device"
				continue
			fi
			if [ -z "$fstype" ]
			then
				LOGGER "Unknown filesystem of [/dev/$part]"
				continue
			fi
			case "$fstype" in
			ntfs)
				extra="-o nls=utf8"
			;;
			vfat)
				extra="-o iocharset=utf8"
			;;
			esac
			LOGGER "Try to mount disk [/dev/$part]($fstype) on [/mnt/$part] ..."
			mkdir -p /mnt/$part
			chmod 777 /mnt/$part
			mount -t $fstype /dev/$part /mnt/$part -o rw,defaults,discard $extra 
			if [ "$?" != 0 ]
			then
				mount /dev/$part /mnt/$part -o rw,defaults && failed=0 || failed=1
			else
				failed=0
			fi
			[ "$failed" = 0 ] && LOGGER "Successfully mounted disk [/dev/$part] on [/mnt/$part]" || {
				LOGGER "Failed to mount disk [/dev/$part] on [/mnt/$part]"
			}
			sleep 1 & unset failed
		done
	fi
;;
esac

rm -f /tmp/automount.pid
LOGGER "automount: Finished"
exit 0