#!/system/bin/sh
# $1 setup
controller=$(getprop sys.usb.controller)
moddir=[MODDIR]
selected=keyboard-standard
remove_ghid() {
        echo "disabling ghid" >>$moddir/ghid.log
        rm /config/usb_gadget/g1/configs/b.1/fhid
        rmdir /config/usb_gadget/g1/functions/hid.usb0
}

enable_ghid() {
        for f in $selected; do
                echo "enabling ghid" >>$moddir/ghid.log
                running=true
                . "$moddir/definitions/$f"
                if [ ! -d /config/usb_gadget/g1/functions/hid.usb0 ]; then
                        mkdir /config/usb_gadget/g1/functions/hid.usb0
                fi
                current_protocol="$(cat /config/usb_gadget/g1/functions/hid.usb0/protocol)"
                current_subclass="$(cat /config/usb_gadget/g1/functions/hid.usb0/subclass)"
                current_report_length="$(cat /config/usb_gadget/g1/functions/hid.usb0/report_length)"
                echo "current ghid" >>$moddir/ghid.log
                echo current_protocol $current_protocol >>$moddir/ghid.log
                echo current_subclass $current_subclass >>$moddir/ghid.log
                echo current_report_length $current_report_length >>$moddir/ghid.log

                if [ -e /config/usb_gadget/g1/functions/hid.usb0 -a "$current_protocol" == "$protocol" -a "$current_subclass" == "$subclass" -a "$current_report_length" == "$report_length" ]  && diff "$moddir/reports/$report_name" /config/usb_gadget/g1/functions/hid.usb0/report_desc ; then
                        echo nothing to update >>$moddir/ghid.log
                        return 0
                fi

                echo new ghid >>$moddir/ghid.log

                echo $protocol >>$moddir/ghid.log
                echo $subclass >>$moddir/ghid.log
                echo $report_length >>$moddir/ghid.log

                rm /config/usb_gadget/g1/configs/b.1/fhid
                echo $protocol >/config/usb_gadget/g1/functions/hid.usb0/protocol
                echo $subclass >/config/usb_gadget/g1/functions/hid.usb0/subclass
                echo $report_length >/config/usb_gadget/g1/functions/hid.usb0/report_length
                cp "$moddir/reports/$report_name" /config/usb_gadget/g1/functions/hid.usb0/report_desc
                cd /config/usb_gadget/g1/configs/b.1/
                /data/adb/magisk/busybox ln -nsf ../../../../usb_gadget/g1/functions/hid.usb0 ./fhid
        done
        echo none >/config/usb_gadget/g1/UDC
        echo "$controller" >/config/usb_gadget/g1/UDC

}

echo success ghid was run >>$moddir/ghid.log

if ! [[ "$1" == "setup" ]]; then
        exit 1
fi
shift

case "$1" in
        ""|"none" )
                remove_ghid
                ;;
        * )
                enable_ghid
        ;;
esac
chcon u:object_r:null_device:s0 /dev/hidg*
chmod 666 /dev/hidg*
sleep 1
chcon u:object_r:null_device:s0 /dev/hidg*
chmod 666 /dev/hidg*