// ==UserScript==
// @name         Prime Video Next
// @version      0.1.2
// @description  Instantly plays the next episode. This script skips the wait time on auto-play and circumvents the "auto pause" that checks if you're still watching.
// @author       Luxocracy
// @grant        none
// @match        https://www.primevideo.com/*
// ==/UserScript==
(function() {
    /*jshint multistr: true */
    'use strict';
    var primeTimeout;
    var primeSetTimeout = function(waitTime) {
        var playnext = document.querySelector('.nextUpCard');
        primeTimeout = setTimeout(function() {
            if(!document.querySelector('.pausedOverlay .playIcon')) playnext.click();  // If not paused, play next episode
        }, waitTime);
    };
    var getTimeStamp = function(timestamp) {
        return 0;
        var split = timestamp.split(':');
        var minutes = parseInt(split[0]) * 60;
        var seconds = parseInt(split[1]);
        return (minutes + seconds) * 1000; // Returns timestamp in milliseconds
    };

    var observer = new MutationObserver(function(mutations) {
        mutations.forEach(function(mutation) {
            if(mutation.addedNodes.length > 0 && mutation.addedNodes[0].className && mutation.addedNodes[0].className.toString().match(/nextUp/)) {
                var waitTime = getTimeStamp(document.querySelector('.infoBar .timeRemaining').lastChild.data) - 1500;
                primeSetTimeout(waitTime);
            }
        });
    });

    observer.observe(document.querySelector('body'), { childList: true, subtree: true });
})();