#!/bin/sh
# Copyright (c) Advanced Micro Devices, Inc. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

# Pre-removal script for amdcuid daemon.
# Template processed by CMake to generate the installed 'prerm' script.
# Do not edit the generated 'prerm' script directly; edit this 'prerm.in' template instead.
# This script stops and removes the daemon service, udev rules, and systemd
# service symlink that were installed by the post-install script.
#
# NOTE: /etc/amdcuid/ (the HMAC key and config) is intentionally left in place
# so that reinstalls preserve existing CUID values.  To fully purge configuration
# run: sudo rm -rf @AMDCUID_SHARED_CONFIG_DIR@

SERVICE_NAME="amdcuid_daemon"
UDEV_RULES_FILE="/etc/udev/rules.d/90-amdcuid.rules"

# Determine the systemd unit directory used by this distro.
if [ -f /etc/debian_version ]; then
    SYSTEMD_UNIT_DIR="/lib/systemd/system"
else
    SYSTEMD_UNIT_DIR="/usr/lib/systemd/system"
fi

# Systemd service
if systemctl is-active --quiet "$SERVICE_NAME" 2>/dev/null; then
    echo "Stopping $SERVICE_NAME..."
    systemctl stop "$SERVICE_NAME" || true
fi

if systemctl is-enabled --quiet "$SERVICE_NAME" 2>/dev/null; then
    echo "Disabling $SERVICE_NAME..."
    systemctl disable "$SERVICE_NAME" || true
fi

SERVICE_LINK="$SYSTEMD_UNIT_DIR/${SERVICE_NAME}.service"
if [ -L "$SERVICE_LINK" ] || [ -f "$SERVICE_LINK" ]; then
    echo "Removing systemd service file: $SERVICE_LINK"
    rm -f "$SERVICE_LINK"
fi

systemctl daemon-reload 2>/dev/null || true

# Udev rules
if [ -f "$UDEV_RULES_FILE" ]; then
    echo "Removing udev rules: $UDEV_RULES_FILE"
    rm -f "$UDEV_RULES_FILE"
    udevadm control --reload-rules 2>/dev/null || true
    udevadm trigger 2>/dev/null || true
fi