Safeway Just For U coupon clicker userscript

safeway_just_for_u.js

// ==UserScript==
// @name     Just For U Coupon Clipper
// @version  1
// @grant    GM_notification
// @match https://www.safeway.com/foru/coupons-deals.html*
// @description Clip all the coupons on the current (as of 5/21/2020) Safeway Just For U coupon system.
// @namespace https://greasyfork.org/users/22981
// ==/UserScript==

/// While the load more button exists, load more
async function loadUntilDone() {
    // Wait for the page to load and then start collecting coupons
    let buttons = document.getElementsByClassName('load-more')
    while (buttons.length > 0) {
        // Still a load more button. Click until it goes away
        console.warn("Loading more coupons...")
        try {
            buttons[0].click()
        } catch (e) {
            console.error(e)
        }
        await sleep(3000);
        buttons = document.getElementsByClassName('load-more')
    }

    // Now find and click all the coupons
    let unclickedButtons = document.getElementsByClassName('grid-coupon-btn');
    console.warn("Clicking " + unclickedButtons.length + " coupons");
    while (unclickedButtons.length > 3){ // clicking all appears to be a loop. unsure why
        console.warn(unclickedButtons.length + " buttons left")
        await clickAllUnclicked(unclickedButtons);
        unclickedButtons = document.getElementsByClassName('grid-coupon-btn')
    }
}

/// Resolve after the given delay
async function sleep(delay) {
    return new Promise((resolve, reject) => {
        setTimeout(resolve, delay)
    })
}

/// Click on every element in the given collection, at a sensible pace, unless alredy clicked
async function clickAllUnclicked(elems) {
    for (let i = 0; i < elems.length; i++) {
        let elem = elems[i];
        if (!elem.classList.contains('coupon-clip-add-to-list')) {
            console.warn("Click element " + i + ": " + elem)
            elem.click()
            await sleep(100)
        }
    }
    console.log("All coupons clicked!");
}

async function informUser(){
  GM_notification({
      text: "All coupons have been clicked",
      title: "All done!",
      timeout: 3000
  });
}

await sleep(5000);
await loadUntilDone()
await informUser();