Usage: ./ocado.sh $OCADO_SESSION_ID

ocado.sh

#!/bin/bash

echo 'Starting Ocado slot checker...'

COUNT=0
CURRENT_STATUS_CODE=404

echo

ocado_slot_status() {
    curl -s -o /dev/null -w "%{http_code}" \
        --request GET \
        --url 'https://www.ocado.com/webshop/getNextAvailableSlot.do?ajax=true' \
        --header 'referer: https://www.ocado.com/webshop/startWebshop.do' \
        --cookie "W3SESSIONID=$1.OCADO120; OCADOSESSIONID=$1;"
}

while [[ "$CURRENT_STATUS_CODE" -eq 404 ]]
do
    CURRENT_STATUS_CODE=$(ocado_slot_status "$1")
    ((COUNT+=1))
    echo -e "\r\033[1A\033[0KAvailable slots have been checked $COUNT times"
    sleep 60;
done

if [[ "$CURRENT_STATUS_CODE" -eq 302 ]]
then
    echo 'The session has expired, please restart the script with a valid Ocado session ID'
    open 'https://www.ocado.com/'
    exit 1;
fi

echo 'Found potential slot, opening the delivery page...'

open 'https://www.ocado.com/webshop/getAddressesForDelivery.do?checkout=no'