Cronometer webhooker - push calories and carbs to webhook.

cronometer-webhooker.js

// ==UserScript==
// @name         Cronometer carb and calorie webhooker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Send net carbs and calories to a webhook.
// @author       Steven
// @match        https://cronometer.com/
// @grant        none
// @run-at document-end
// ==/UserScript==

'use strict';

const webhookUrl = "https://patchbay.pub/k8u4-c4sm";

// only work on diary page
if ( !/#diary.*/.test(location.hash)) {
    return;
}

const main = function() {
    let carbs = document.querySelector(".diary_side_box .summary-carbs").textContent;
    carbs = carbs.replace(/\s\(\d+%\)/gi, "").replace(/\sg/gi, "").replace(/\s+/gi, "").split("/");

    const carbsAllowed = carbs[1];
    const calories = document.querySelectorAll(".diary_side_box img")[1].nextElementSibling.textContent;
    const totalCarbs = Math.round(carbsAllowed - parseFloat(carbs[0]));
    const totalCalories = parseInt(calories, 10);

    if (totalCarbs !== "" && totalCalories !== "") {
        const message = JSON.stringify({
            carbs: totalCarbs,
            calories: totalCalories,
        });

        fetch(webhookUrl, {
            method: 'POST',
            body: `data: ${message}\n\n`,
        });
    }

    // Just refesh the page after a while.
    setInterval(function() {
        window.location.reload();
    }, 1800000);
}

// Push data to the webhook after 10 seconds giving time to log food.
function ready() {
    setInterval(main, 10000);
}


window.addEventListener("load", ready);