Zählerstand der go-e Wallbox auslesen

go-e-zaehlerstand

#!/bin/bash

url="http://go-echarger/status"
#url="https://api.go-e.co/api_status?token=abcdef0123"

if [[ "${url}" =~ api.go-e.co ]]
then
        dataobject='.data'
else
        dataobject='.'
fi

if ! json="$(curl -s "${url}" | jq "${dataobject}")"
then
        printf "Unable to connect to: %s\n" "${url}"
fi

time="$(jq --raw-output .tme <<<"${json}")"
printf "Datum/Uhrzeit: %s.%s.%s %s:%s\n" \
        "${time:0:2}" "${time:2:2}" "${time:4:2}" "${time:6:2}" "${time:8:2}"

serial="$(jq --raw-output .sse <<<"${json}")"
printf "Seriennummer: %s\n\n" "${serial}"

key_card_id=('rca' 'rcr' 'rcd' 'rc4' 'rc5' 'rc6' 'rc7' 'rc8' 'rc9' 'rc1')
key_card_name=('rna' 'rnm' 'rne' 'rn4' 'rn5' 'rn6' 'rn7' 'rn8' 'rn9' 'rn1')
key_card_energy=('eca' 'ecr' 'ecd' 'ec4' 'ec5' 'ec6' 'ec7' 'ec8' 'ec9' 'ec1')
for (( card=0; card<=9; card++))
do
        # Is a card registered to this slot?
        this_id="$(jq --raw-output ."${key_card_id["${card}"]}" <<<"${json}")"
        if [[ -z "${this_id}" ]]
        then
                continue
        fi
        this_energy_raw="$(jq --raw-output ."${key_card_energy["${card}"]}" <<<"${json}")"
        this_energy_kwh="$(( ${this_energy_raw} / 10 ))"
        this_name="$(jq --raw-output ."${key_card_name["${card}"]}" <<<"${json}")"
        printf "Zählerstand für Karte %s, ID %s (%s): %s kWh\n" "$(( ${card} + 1 ))" "${this_id}" "${this_name}" "${this_energy_kwh}"
done

energy_total_raw="$(jq --raw-output .eto <<<"${json}")"
energy_total_kwh="$(( ${energy_total_raw} / 10 ))"
printf "\nZählerstand insgesamt: %s kWh\n" "${energy_total_kwh}"

Knuts-MacBook-Pro:~ knut$ echo '{"foo": "0"}' | jq --raw-output .foo
0
Knuts-MacBook-Pro:~ knut$

Nun ist nur noch der Fehler in Zeile 39.

./go-e-zaehlerstand: line 39: "0" + 1 : syntax error: operand expected (error token is ""0" + 1 ")

Fixed. Was ein Murks mit Apple hey. 🤐