HideAmazonBuyNowAndCheckoutButton

// ==UserScript==
// @name        Hide Amazon Buy Now Button
// @namespace   http://tampermonkey.net/
// @version     0.1
// @description Hide the Buy Now button and replace checkout buttons before 8pm PST
// @author      NickolayKon@
// @match       https://*.amazon.com/*
// @grant       none
// ==/UserScript==
 
(function() {
    'use strict';
    // Get the Buy Now button(s) by IDs that contain 'buy-now' or 'buy-right-now'.
    var buyNowButtons = document.querySelectorAll("[id*='buy-now'], [id*='buy-right-now']");
 
    // Loop through the NodeList and hide each button
    for (var i = 0; i < buyNowButtons.length; i++) {
        buyNowButtons[i].style.display = "none";
    }
})();
 
 
(function() {
    'use strict';
 
    // Get the current date/time in PST
    let date = new Date();
    let pstDate = new Date(date.toLocaleString("en-US", {timeZone: "America/Los_Angeles"}));
 
    // If it's before 8pm PST, hide the checkout buttons and replace them with a message
    if (pstDate.getHours() < 20) {
        console.log("It is before 8pm lets hide the checkout")
        // Classes that contain 'sc-buy-box-inner-box', or 'checkoutNowBuyNow'
        let buttonClasses = ["sc-buy-box-inner-box", "checkoutNowBuyNow"];
 
        buttonClasses.forEach(function(cls) {
             var buttons = document.querySelectorAll(`.${cls}`);
 
            for (var i = 0; i < buttons.length; i++) {
                buttons[i].style.display = "none";
 
                // Create a new element for the message
                var messageElement = document.createElement("div");
                messageElement.textContent = "It's before 8pm PST. Checkout is unavailable at this time for improvement of your own habits.";
 
                // Add the message element to the page in place of the button
                buttons[i].parentNode.insertBefore(messageElement, buttons[i]);
            }
        });
    }
})();