// ==UserScript==
// @name         删除Google广告
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  删除部分网页内嵌的Google广告
// @author       You
// @match        https://www.sass.hk/*/
// @match        https://*/*/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=sass.hk
// @grant        none
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // Your code here...
    let throttleTimeID = null;
    let adsDoms1 = document.querySelectorAll(".google-auto-placed");
    let adsDoms2 = document.querySelectorAll(".adsbygoogle");

    hideAds(adsDoms1);
    hideAds(adsDoms2);
    // observer 观察者
    // 创建一个观察者
    const observer = new MutationObserver(callbackFuc);

    // 配置文件
    const config = {
        attributes: true,
        attributeFilter: undefined, /*需要监听的属性名称列表，如果没有表示监听全部的属性*/
        attributeOldValue: true, /*传递之前旧的值给mutationRecord*/
        characterData: true, /*是否监听内部文本节点的数据变化*/
        characterDataOldValue: true, /*mutationRecord 是否包含内部文本节点变化前的数据*/
        childList: true,
        subtree: true /*是否把监听的方位放到节点树中的全部子节点上*/
    }
    observer.observe(document.getElementsByTagName('body')[0], config);

    // 事件处理器
    function callbackFuc(mutationRecords, observer){
        //console.log('mutationRecords',mutationRecords)
        mutationRecords.forEach(mutationRecord => {
            //console.log('mutationRecord',mutationRecord)
            //if(mutationRecord.type === "attributes") return console.log('属性发生了变化 target =', mutationRecord.target)
            if(mutationRecord.type === 'childList' && (mutationRecord.target.className.includes("adsbygoogle") || mutationRecord.target.className.includes("google-auto-placed"))){
                mutationRecord.target.style.display="none";

                return console.log('添加or删除了 childList: ',mutationRecord.target);
            }
            //if(mutationRecord.type === 'characterData') return console.log('文本节点的数据发生了变化',mutationRecord.target)
        })
    }

    function deleteAds(doms){
        setIntervalFun(doms,function(itemDom){
            let firstChildDom = itemDom.firstElementChild;
            while (firstChildDom) {
                firstChildDom.remove();
                firstChildDom = itemDom.firstElementChild;
            }
        })
    }

    function hideAds(doms){
        setIntervalFun(doms,function(itemDom){
            itemDom.style.display="none";
        })
    }

    function setIntervalFun(doms,callback){
        let times = 0;
        let timeId = setInterval(function(){
            if(doms.length>0){
                for(let itemDom of doms){
                    if(callback){
                        callback(itemDom);
                    }
                }
                clearInterval(timeId);
            }
            if(times>10){
                clearInterval(timeId);
            }
            times++;
        },100)
    }

    function throttleFuc(callback) {

        if(throttleTimeID){
            return;
        }
        if (callback) {
            callback();
        }
        throttleTimeID = setTimeout(function () {
            throttleTimeID = null;
        }, 1500)
    }


})();