#!/usr/bin/env bash

set -euo pipefail

device_id=$(
    xinput list |
        grep -i 'Optical Mouse' |
        sed -n 's/.*id=\([0-9]\+\).*/\1/p' |
        head -n 1
)

if [[ -z "$device_id" ]]; then
    echo "Error: No device matching 'Optical Mouse' found." >&2
    exit 1
fi

echo "Found Optical Mouse with ID: $device_id"

xinput set-prop "$device_id" "libinput Left Handed Enabled" 1