// ==UserScript==
// @name         头歌平台代码内容复制
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  用于解除头歌平台的复制限制
// @author       lrx,alore
// @match        https://www.educoder.net/tasks/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=educoder.net
// @license      GPL-2.0-only
// @grant        none
// @downloadURL none
// ==/UserScript==


(function () {
    'use strict';

    let isInlay = false
    function inlayButton(){
        if(!isInlay){
            let innerbutton = `<a title="复制窗口代码" id="scCopyButton"><i class="fas fa-copy"></i></a>`;
            document.querySelector(".action-bar___bbigU").innerHTML = innerbutton + document.querySelector(".action-bar___bbigU").innerHTML;
            isInlay = true
        }
    }
    setInterval(inlayButton, 1000);



    setTimeout(function() {
        document.querySelector("#scCopyButton").addEventListener('click', function() {
            const elements = document.querySelectorAll(".view-line");
            let content = "";
            for (let i = 0; i < elements.length; i++) {
                content += elements[i].textContent + "\n";
            }
            const textarea = document.createElement("textarea");
            textarea.value = content;
            document.body.appendChild(textarea);
            textarea.select();
            textarea.setSelectionRange(0, textarea.value.length);
            document.execCommand("copy");
            document.body.removeChild(textarea);
            alert(`
            已将窗口内容复制进剪贴板
            （当前只能复制已展示出来的内容，且包括换行）
            `);
        });
    }, 3000);

    // 重写alter函数
window.alert = function(msg, callback) {
	var div = document.createElement("div");
	div.innerHTML = "<style type=\"text/css\">"
			+ ".nbaMask { position: fixed; z-index: 1000; top: 0; right: 0; left: 0; bottom: 0; background: rgba(0, 0, 0, 0.5); }                                                                                                                                                                       "
			+ ".nbaMaskTransparent { position: fixed; z-index: 1000; top: 0; right: 0; left: 0; bottom: 0; }                                                                                                                                                                                            "
			+ ".nbaDialog { position: fixed; z-index: 5000; width: 80%; max-width: 300px; top: 50%; left: 50%; -webkit-transform: translate(-50%, -50%); transform: translate(-50%, -50%); background-color: #c7c7c7; text-align: center; border-radius: 8px; overflow: hidden; opacity: 1; color: white; }"
			+ ".nbaDialog .nbaDialogHd { padding: .2rem .27rem .08rem .27rem; }                                                                                                                                                                                                                         "
			+ ".nbaDialog .nbaDialogHd .nbaDialogTitle { font-size: 17px; font-weight: 400; }                                                                                                                                                                                                           "
			+ ".nbaDialog .nbaDialogBd { padding: 0 .27rem; font-size: 15px; line-height: 1.3; word-wrap: break-word; word-break: break-all; color: #252525; min-height: 50px;}                                                                                                                                          "
			+ ".nbaDialog .nbaDialogFt { position: relative; line-height: 48px; font-size: 17px; display: -webkit-box; display: -webkit-flex; display: flex; }                                                                                                                                          "
			+ ".nbaDialog .nbaDialogFt:after { content: \" \"; position: absolute; left: 0; top: 0; right: 0; height: 1px; border-top: 1px solid #e6e6e6; color: #e6e6e6; -webkit-transform-origin: 0 0; transform-origin: 0 0; -webkit-transform: scaleY(0.5); transform: scaleY(0.5); }               "
			+ ".nbaDialog .nbaDialogBtn { display: block; -webkit-box-flex: 1; -webkit-flex: 1; flex: 1; color: #3376a2;; text-decoration: none; -webkit-tap-highlight-color: transparent; position: relative; margin-bottom: 0; }                                                                       "
			+ ".nbaDialog .nbaDialogBtn:after { content: \" \"; position: absolute; left: 0; top: 0; width: 1px; bottom: 0; color: #e6e6e6; -webkit-transform-origin: 0 0; transform-origin: 0 0; -webkit-transform: scaleX(0.5); transform: scaleX(0.5); }             "
			+ ".nbaDialog a { text-decoration: none; -webkit-tap-highlight-color: transparent; }"
			+ "</style>"
			+ "<div id=\"dialogs2\" style=\"display: none\">"
			+ "<div class=\"nbaMask\"></div>"
			+ "<div class=\"nbaDialog\">"
			+ "	<div class=\"nbaDialogHd\">"
			+ "		<strong class=\"nbaDialogTitle\"></strong>"
			+ "	</div>"
			+ "	<div class=\"nbaDialogBd\" id=\"dialog_msg2\">空</div>"
			+ "	<div class=\"nbaDialogHd\">"
			+ "		<strong class=\"nbaDialogTitle\"></strong>"
			+ "	</div>"
			+ "	<div class=\"nbaDialogFt\">"
			+ "		<a href=\"javascript:;\" class=\"nbaDialogBtn nbaDialogBtnPrimary\" id=\"dialog_ok2\">确定</a>"
			+ "	</div></div></div>";
	document.body.appendChild(div);

	var dialogs2 = document.getElementById("dialogs2");
	dialogs2.style.display = 'block';

	var dialog_msg2 = document.getElementById("dialog_msg2");
	dialog_msg2.innerHTML = msg;

	// var dialog_cancel = document.getElementById("dialog_cancel");
	// dialog_cancel.onclick = function() {
	// dialogs2.style.display = 'none';
	// };
	var dialog_ok2 = document.getElementById("dialog_ok2");
	dialog_ok2.onclick = function() {
		dialogs2.style.display = 'none';
		// callback();
	};
};

})();