_install_sleep_hook() {
    cp /usr/share/intel-ipu7-camera/camera-sleep-hook /usr/lib/systemd/system-sleep/camera-sleep-hook
    chmod 755 /usr/lib/systemd/system-sleep/camera-sleep-hook
}

post_install() {
    _install_sleep_hook
    systemctl daemon-reload
    systemctl enable camera-init.service
    systemctl --global enable camera-feed-watch.service
    udevadm control --reload-rules 2>/dev/null || true

    if [ -n "$SUDO_USER" ]; then
        usermod -aG video "$SUDO_USER" 2>/dev/null || true

        # Start the service in the current user session if one is active
        local uid
        uid=$(id -u "$SUDO_USER" 2>/dev/null)
        if [ -n "$uid" ] && [ -d "/run/user/$uid" ]; then
            XDG_RUNTIME_DIR="/run/user/$uid" \
            DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$uid/bus" \
            runuser -u "$SUDO_USER" -- \
                systemctl --user start camera-feed-watch.service 2>/dev/null || true
        fi
    fi
}

post_upgrade() {
    _install_sleep_hook
    systemctl daemon-reload
    udevadm control --reload-rules 2>/dev/null || true
}

pre_remove() {
    systemctl --global disable camera-feed-watch.service 2>/dev/null || true
    systemctl disable camera-init.service 2>/dev/null || true
    systemctl stop camera-init.service 2>/dev/null || true

    if [ -n "$SUDO_USER" ]; then
        local uid
        uid=$(id -u "$SUDO_USER" 2>/dev/null)
        if [ -n "$uid" ] && [ -d "/run/user/$uid" ]; then
            XDG_RUNTIME_DIR="/run/user/$uid" \
            DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$uid/bus" \
            runuser -u "$SUDO_USER" -- \
                systemctl --user stop camera-feed-watch.service 2>/dev/null || true
        fi
    fi
}

post_remove() {
    rm -f /usr/lib/systemd/system-sleep/camera-sleep-hook
    systemctl daemon-reload
    udevadm control --reload-rules 2>/dev/null || true
}