#!/bin/bash

socket="${XDG_RUNTIME_DIR:-/run/user/$UID}/yubikey-touch-detector.socket"

while true; do
    touch_reasons=()

    if [ ! -e "$socket" ]; then
        printf '{"text": "Waiting for YubiKey socket"}\n'
        while [ ! -e "$socket" ]; do sleep 1; done
    fi
    printf '{"text": ""}\n'

    while read -n5 cmd; do
        reason="${cmd:0:3}"

        if [ "${cmd:4:1}" = "1" ]; then
            touch_reasons+=("$reason")
        else
            for i in "${!touch_reasons[@]}"; do
                if [ "${touch_reasons[i]}" = "$reason" ]; then
                    unset 'touch_reasons[i]'
                    break
                fi
            done
        fi

        if [ "${#touch_reasons[@]}" -eq 0 ]; then
            printf '{"text": ""}\n'
        else
            tooltip="YubiKey is waiting for a touch, reasons: ${touch_reasons[@]}"
            printf '{"text": "  ", "tooltip": "%s"}\n' "$tooltip"
        fi
    done < <(nc -U "$socket")

    sleep 1
done