// ==UserScript==
// @name         killZhihuAd-屏蔽知乎广告-沉浸模式浏览
// @description  干掉知乎广告
// @namespace    http://tampermonkey.net/
// @icon         https://www.zhihu.com/static/favicon.ico
// @version      0.2(2020/08/24)
// @author       shawn
// @run-at       document-end
// @match        *://*.zhihu.com/*
// @require      https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_registerMenuCommand
// @downloadURL none
// ==/UserScript==


(function() {
    /* global $ */
    'use strict';
    //沉浸模式开关
    var focus_mode_on = GM_getValue("focus_mode_on");
    if(focus_mode_on){
        GM_registerMenuCommand("☑ 沉浸模式", focus_close, "");
    } else {
        GM_registerMenuCommand("☐ 沉浸模式", focus_open, "");
    }
    function focus_open () {
        GM_setValue("focus_mode_on", true);
        location.reload();
    }
    function focus_close () {
        GM_setValue("focus_mode_on", false);
        location.reload();
    }

    //取消二次转链
    if(window.location.host == "link.zhihu.com"){
    	var regRet = location.search.match(/target=(.+?)(&|$)/);
    	if(regRet && regRet.length == 3){
    		location.href = decodeURIComponent(regRet[1]);
    	}
	}

    //去除特定广告
    $('.css-520aav').remove();
    $(".Footer").remove();//侧边栏底部信息

    //+沉浸模式+杀掉侧边栏、调整卡片宽度
    if(focus_mode_on){
        if(window.location.href.indexOf("https://www.zhihu.com/question/") != -1) {
            setTimeout(resetQuestionColumn, 50);
            setInterval(resetQuestionColumn, 1000);
	    } else if (window.location.href.indexOf("https://www.zhihu.com/search") != -1) {
            setTimeout(resetSearchColumn, 50);
        } else {
            setTimeout(resetMainColumn, 50);
            setInterval(killCardAd, 500);
        }
    } else {
        if(window.location.href.indexOf("https://www.zhihu.com/question/") != -1) {
            setInterval(killSideBarAd, 500);
	    } else {
            setInterval(killCardAd, 500);
            setInterval(killSideBarAd, 500);
        }
    }

    function killCardAd() {
        //答案卡片中的广告
        $(".TopstoryItem--advertCard").remove();
    }
    function killSideBarAd() {
        //右边栏广告
        $(".Pc-card").each(function(){
            if($(this).find(".Banner-adTag").length != 0){
                $(this).remove();
            }
        });
    }
    function resetQuestionColumn() {
        $(".Question-sideColumn").remove();
        $(".Question-mainColumn").width('960px');
        $(".ContentItem-actions").width('920px');
    }
    function resetMainColumn() {
        $(".GlobalSideBar").remove();
        $(".Topstory-mainColumn").width('960px');
        $(".ContentItem-actions").width('920px');
    }
    function resetSearchColumn() {
        $(".SearchSideBar").remove();
        $(".SearchMain").width('960px');
        $(".ContentItem-actions").width('920px');
    }

})();