#!/bin/bash

SCRIPT_NAME="remove-driver.sh"
SCRIPT_VERSION="20211204"

DRV_NAME="rtl88x2bu"
DRV_VERSION="5.13.1"
OPTIONS_FILE="88x2bu.conf"

NO_PROMPT=0

# Get the options                                                                                                                                                                                              
while [ $# -gt 0 ]
do
        case $1 in
                NoPrompt)
                        NO_PROMPT=1 ;;
                *h|*help|*)
                        echo "Syntax $0 <NoPrompt>"
                        echo "       NoPrompt - noninteractive mode"
                        echo "       -h|--help - Show help"
                        exit 1
                        ;;
        esac
        shift
done

if [[ $EUID -ne 0 ]]
then
	echo "You must run this script with superuser (root) privileges."
	echo "Try \"sudo ./${SCRIPT_NAME}\""
	exit 1
fi

echo "Starting removal..."

dkms remove -m ${DRV_NAME} -v ${DRV_VERSION} --all
RESULT=$?

# RESULT will be 3 if there are no instances of module to remove
# however we still need to remove the files or the install script
# will complain.
if [[ ("$RESULT" = "0")||("$RESULT" = "3") ]]
then
	echo "Deleting ${OPTIONS_FILE} from /etc/modprobe.d"
	rm -f /etc/modprobe.d/${OPTIONS_FILE}
	echo "Deleting source files from /usr/src/${DRV_NAME}-${DRV_VERSION}"
	rm -rf /usr/src/${DRV_NAME}-${DRV_VERSION}
	echo "The driver was removed successfully."
	echo "Info: You may now delete the driver directory if desired."
else
	echo "An error occurred. dkms remove error = ${RESULT}"
	echo "Please report this error."
	exit $RESULT
fi

if [ $NO_PROMPT -ne 1 ]
   then
       read -p "Are you ready to reboot now? [y/N] " -n 1 -r
       echo                                                                                                                                                                         
       if [[ $REPLY =~ ^[Yy]$ ]]
       then
           reboot
       fi
fi

exit 0