Bash script that checks whether an Apple product is available for pickup at your nearest Apple Store and sends a push notification if it gets available again (via ntfy.sh)

apple-availability-check.sh

#!/bin/bash
partNo=$1
storeId=$2
notifyUrl=https://ntfy.sh/$3

FILE=$4/${partNo/\//-}-$storeId
if [ ! -f "$FILE" ]; then
    echo "$FILE does not exist."
    echo -n "1" > $FILE
fi
productName=""

function curlItem {
    apiResult=$(/usr/bin/curl -s "https://www.apple.com/de/shop/fulfillment-messages?store=${storeId}&little=false&parts.0=${partNo}&purchaseOption=fullPrice&mts.0=regular&mts.1=sticky&fts=true")
    productName=$(echo -n ${apiResult} | jq -r ".body.content.pickupMessage.stores[0].partsAvailability.\"${partNo}\".messageTypes.regular.storePickupProductTitle")
    storeAvailability=$(echo -n ${apiResult} | jq -r ".body.content.pickupMessage.stores[0].partsAvailability.\"${partNo}\".pickupDisplay" | grep -i -w "available" | wc -l)
    printf "Store ${storeId}: ${storeAvailability}"
    if [ "$storeAvailability" -eq "1" ]; then
        previousState=$(<$FILE)
        if [[ "$previousState" == 0 ]]; then
            sendPush
	    echo -n "1" > $FILE
            exit
        fi
    else 
        echo -n "0" > $FILE
    fi
}

function sendPush {
    result=$(/usr/bin/curl -s -X POST -H "Title: Apple Store" -H "Click: https://store.apple.com/de/xc/product/$partNo" -H "Tags: apple" -d "${productName} ist jetzt verfügbar! (Tap to order)" $notifyUrl)
}

responsedata=$(curlItem)
echo $responsedata

Update 24.09.2023

Das Skript ist jetzt komplett universell benutzbar und muss nicht mehr editiert werden. Beim Aufruf müssen die benötigten 4 Parameter lediglich mitgegeben werden: partNo storeId notifyTopic tempFolder

Zum Beispiel für das iPhone 15 Pro Max 256 GB Titan Blau im Apple Store Köln Schildergasse:
./apple-availability-check.sh "MU7A3ZD/A" "R559" "my-secret-apple-alerts-395920" "/Users/marco/dev/temp"