// ==UserScript==
// @name         4khd 广告屏蔽
// @namespace    https://viayoo.com
// @version      0.44
// @description  移除4khd广告。
// @author       Via
// @license      MIT
// @match        *://*.4khd.com/*
// @match        *://*.xxtt.ink/*
// @match        *://*.uuss.uk/*
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const AD_SELECTORS = '.exo_wrapper,.popup,.centbtd,.exo-native-widget,.exo-native-widget-outer-container,ins[data-processed="true"],.popup-iframe,ins.adsbynetwork';
    const BLOCK_URL_PATTERNS = [/(magsrv|pemsrv|ad-provider|exoclick)\.com/i];
    const BLOCK_CONTENT_PATTERNS = [/(magsrv|pemsrv|ad-provider|exoclick)\.com/i, /ad-provider\.js/i, /AdProvider/i, /RocketBrowser/i, /data-rocketlazyloadscript/i];

    Object.defineProperty(window, 'AdProvider', {
        value: [],
        writable: false
    });

    location.reload = function() {
        return false;
    };

    if (navigator.serviceWorker && navigator.serviceWorker.controller) {
        navigator.serviceWorker.controller.postMessage = function() {};
    }

    const originalFetch = window.fetch;
    window.fetch = function(...args) {
        let url = '';
        if (typeof args[0] === 'string') {
            url = args[0];
        } else if (args[0] && typeof args[0] === 'object' && args[0].url) {
            url = args[0].url;
        }
        if (BLOCK_URL_PATTERNS.some(function(p) {
                return p.test(url);
            })) {
            return Promise.resolve(new Response('', {
                status: 200
            }));
        }
        if (url.indexOf('venor.php') !== -1) {
            return Promise.resolve(new Response('1', {
                status: 200
            }));
        }
        if (url.indexOf('popunder1000.js') !== -1 || url.indexOf('pemsrv.com') !== -1) {
            return Promise.resolve(new Response('', {
                status: 200
            }));
        }
        return originalFetch.apply(this, args);
    };

    const origOpen = XMLHttpRequest.prototype.open;
    XMLHttpRequest.prototype.open = function(method, url) {
        if (typeof url === 'string') {
            if (BLOCK_URL_PATTERNS.some(function(p) {
                    return p.test(url);
                }) || url.indexOf('venor.php') !== -1) {
                return;
            }
        }
        return origOpen.apply(this, arguments);
    };

    if (navigator.serviceWorker && typeof navigator.serviceWorker.register === 'function') {
        navigator.serviceWorker.register = function() {
            return Promise.reject();
        };
    }

    const origOpenWin = window.open;
    window.open = function(...args) {
        const url = args[0] || '';
        const target = args[1] || '';
        if (/magsrv|ads|pop/i.test(url)) return null;
        if (
            url.indexOf('splash.php') !== -1 ||
            url.indexOf('syndication') !== -1 ||
            target === '_blank' || target === '_self' ||
            url === document.URL || url === document.referrer
        ) {
            return null;
        }
        return origOpenWin.apply(this, args);
    };

    const origCreate = document.createElement;
    document.createElement = function(tag) {
        const el = origCreate.call(this, tag);
        if (tag === 'a') {
            el.click = function() {};
            el.dispatchEvent = function() {};
        }
        return el;
    };

    document.addEventListener('click', function(e) {
        if (e.isTrusted === false) {
            e.stopImmediatePropagation();
            e.preventDefault();
            return false;
        }
    }, true);

    const blockScript = function(node) {
        if (node.tagName !== 'SCRIPT') return false;
        const src = node.src || '';
        const txt = node.textContent || '';
        if (BLOCK_CONTENT_PATTERNS.some(function(re) {
                return re.test(src) || re.test(txt);
            })) {
            node.parentNode && node.parentNode.removeChild(node);
            return true;
        }
        if (node.hasAttribute && node.hasAttribute('data-rocketlazyloadscript')) {
            node.parentNode && node.parentNode.removeChild(node);
            return true;
        }
        if (
            txt.indexOf('popMagic') !== -1 ||
            txt.indexOf('popunder1000.js') !== -1 ||
            txt.indexOf('venor.php') !== -1 ||
            txt.indexOf('ad-provider.js') !== -1 ||
            txt.indexOf('adConfig') !== -1 ||
            src.indexOf('ad-provider.js') !== -1
        ) {
            node.textContent = '';
            node.parentNode && node.parentNode.removeChild(node);
            return true;
        }
        return false;
    };

    const clearStorage = function() {
        var keys = ['storedResult', 'inData', 'extranks', 'contentSize', 'Better', 'inData2', 'BetterJsPop_lastOpenedAt'];
        for (var i = 0; i < keys.length; i++) {
            localStorage.removeItem(keys[i]);
        }
        var cookies = document.cookie.split(';');
        for (var j = 0; j < cookies.length; j++) {
            var name = cookies[j].split('=')[0].replace(/^\s+|\s+$/g, '');
            if (name.indexOf('zone-cap-') === 0) {
                document.cookie = name + '=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/';
            }
        }
    };

    const removeAds = function() {
        var elements = document.querySelectorAll(AD_SELECTORS);
        for (var i = 0; i < elements.length; i++) {
            var el = elements[i];
            if (el && el.parentNode) {
                el.parentNode.removeChild(el);
            }
        }
        clearStorage();
    };

    var removeTimer = 0;
    const debouncedRemoveAds = function() {
        clearTimeout(removeTimer);
        removeTimer = setTimeout(removeAds, 80);
    };

    var observer = new MutationObserver(function(muts) {
        for (var i = 0; i < muts.length; i++) {
            var m = muts[i];
            for (var j = 0; j < m.addedNodes.length; j++) {
                var n = m.addedNodes[j];
                if (n.nodeType !== 1) continue;
                if (blockScript(n)) continue;
                var scripts = n.querySelectorAll ? n.querySelectorAll('script') : [];
                for (var k = 0; k < scripts.length; k++) {
                    blockScript(scripts[k]);
                }
                debouncedRemoveAds();
            }
        }
    });
    observer.observe(document, {
        childList: true,
        subtree: true
    });

    const init = function() {
        if (document.body) {
            removeAds();
            clearStorage();
            setInterval(clearStorage, 3000);
        } else {
            setTimeout(init, 10);
        }
    };

    if (document.readyState === 'loading' || document.readyState === 'interactive') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }
})();