// ==UserScript==
// @name         B站视频封面查看
// @namespace    limgmk/bilibili-cover
// @version      0.0.1
// @description  在播放窗口下方添加查看封面的按钮
// @author       Limgmk
// @include     http*://www.bilibili.com/video/av*
// @include     http*://www.bilibili.com/video/BV*
// @run-at      document-end
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';
    var cover = document.evaluate('//meta[@itemprop="image" and @data-vue-meta="true"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue
    var coverURL = cover.getAttribute("content");

    addNode();

    function addNode(){
        var share = document.evaluate('//span[@title="分享"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
        var ops = document.evaluate('//div[@class="ops"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
        if(share.innerText != "--" && ops){
            var showCover = document.createElement("span");
            showCover.innerHTML = '<flag style="font-size: 20px;">🔎</flag><a href="' + coverURL + '" target="_blank"> 封面</a>';
            share.setAttribute("style", "width: 92px;");
            ops.insertBefore(showCover, null);
        }else{
            setTimeout(addNode,100);
        }
    }

})();