// ==UserScript==
// @name         zhihu_cp
// @namespace    http://tampermonkey.net/
// @version      0.1
// @author       You
// @match        https://www.zhihu.com/*
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.0/jquery.min.js
// @require      https://cdn.jsdelivr.net/npm/clipboard@2.0.8/dist/clipboard.min.js
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    $(document).ready(function(){
        var cp_btn = $('<button>');
        cp_btn.attr('class','copy');
        cp_btn.text("cp_ans");
        cp_btn.attr('style',"position:fixed;top:50px;left:50px;width:50px;height:30px;background-color:gray;");
        var cp_texts = '';
        cp_btn.click(function(){
            var articles = $('.RichContent-inner');
            articles.each(function(index, article) {
                var cp_text = article.innerHTML.replace(/<img.*?(data-formula="(.*?)")?>/ig, '\$$$2\$$')
                .replace(/<sup (data-text="(.*?)")?.*?>.*?<\/sup>/,'¡¾$2¡¿')
                .replace(/<(span|ol|li|h2|b|div|p).*?>|<\/(span|ol|li|h2|b|div)>/ig,'')
                .replace(/<figure.*?>.*?<\/figure>/ig,'[ͼռλ·û]')
                .replace('$$','')
                .replace(/<svg.*?>.*?<\/svg>/ig,'')
                .replace(/<noscript>.*?<\/noscript>/ig,'')
                .replace(/<a.*?href="(.*?)".*?>(.*?)<\/a>/ig,'\\href{$1}{$2}')
                .replace(/&amp;/g,'&')
                .replace(/&lt;/g,'<')
                .replace(/&gt;/g,'>')
                .replace(/<\/p>|<br>/ig, '\n');
                cp_texts += '\n\n'+cp_text;
            });
            $(cp_btn).attr('data-clipboard-text',cp_texts);
            var clipboard = new ClipboardJS('.copy');
        });
        $('body').append(cp_btn);
    });
})();