#!/bin/bash

URL=${1}
PHONE_NUMBER=${2}
NAME=${3}

echo "URL: ${1}"
echo "Phone Number: ${2}"
echo "Name: ${3}"

SOURCE_FILE="/tmp/source-${NAME}.html"

wget -qO "${SOURCE_FILE}" ${URL}

INVENTORY_QUANTITY=$(grep -o -m 1 '"inventory_quantity":[0-9]\+,' "${SOURCE_FILE}" | grep -o '[0-9]\+')

echo "Inventory Quantity: ${INVENTORY_QUANTITY}"

if [[ "${INVENTORY_QUANTITY}" -gt "0" ]]; then
    MESSAGE="There are currently ${INVENTORY_QUANTITY} ${NAME} in stock. ${URL}"
    echo "${MESSAGE}" | mailx -r "stockalerts@johnhgaunt.com" --set smtp="smtp.home.johnhgaunt.com:25" ${PHONE_NUMBER}@vtext.com
    echo "Email sent"
else
    echo "Not sending email"
fi