Costco.js

// ==UserScript==
// @name         Costco PS5
// @namespace    https://myles.empty.best/
// @version      0.1
// @description  Bundle me
// @author       Myles "Empty" Best
// @match        https://www.costco.com/LogonForm
// @match        https://www.costco.com/*
// @grant        none
// ==/UserScript==

// NOTE: Designed for PS5 not being in cart, unsure of how it will
// perform if in cart.

// Load https://www.costco.com/sony-playstation-5-gaming-console-bundle.product.100691489.html and wait.

//////////////////////////////////////////////////////////
// CONFIGURE THIS BEFORE RUNNING OR IT WILL FUCK YOU UP //
//////////////////////////////////////////////////////////
var COSTCO_USERNAME="youremail@address.com"
var COSTCO_PASSWORD="yourpassword"
////////////////////////////////////
// AND DON'T MESS WITH THIS BELOW //
////////////////////////////////////

async function wait_for(query) {
    while(true) {
        var node = $(query);
        if(node.length != 0 && node.is(":visible")) {
            break;
        }
        console.log("" + query + " not available yet, waiting.");
        await new Promise(r => setTimeout(r, 500));
    }
}

async function press_button(query) {
    await wait_for(query);
    $(query).click();
    console.log("Button " + query + " pressed");
}

async function reload_later() {
    await new Promise(r => setTimeout(r, 300000));
    window.location.reload();
}

(function() {
    if(window.location.pathname != "/LogonForm") {
        if($("a[href='https://www.costco.com/LogonForm']:visible").length != 0) {
            window.location = "https://www.costco.com/LogonForm";
            return
        }
    }

    if(window.location.pathname == "/LogonForm") {
        $("#logonId").val(COSTCO_USERNAME);
        $("#logonPassword").val(COSTCO_PASSWORD);
        $("#LogonForm").find("[type=submit]").click();
        return
    }

    if(window.location.pathname == "/") {
        window.location = "https://www.costco.com/sony-playstation-5-gaming-console-bundle.product.100691489.html";
        return
    }

    if(window.location.pathname == "/AjaxManageShoppingCartCmd") {
        window.location = "https://www.costco.com/CheckoutCartDisplayView";
        return
    }

    if(window.location.pathname == "/sony-playstation-5-gaming-console-bundle.product.100691489.html") {
        press_button("#add-to-cart-btn");
        reload_later();
        return;
    }

    if(window.location.pathname == "/CheckoutCartDisplayView") {
        press_button("#shopCartCheckoutSubmitButton");
        return;
    }

})();