// ==UserScript==
// @name         动漫花园(dmhy.org) - 批量复制磁力链接
// @namespace    moe.jixun.dmhy
// @version      1.2
// @description  点选所有需要下载的种子然后一键复制。
// @author       Jixun
// @include      http://share.dmhy.org/topics/*
// @include      https://share.dmhy.org/topics/*
// @grant        none
// @run-at       document-start
// @downloadURL none
// ==/UserScript==

const APP_NAME = '动漫花园 - 批量复制磁力链接';

function text (str) {
    return document.createTextNode(str);
}

function span (str) {
    let span = document.createElement('span');
    span.appendChild(text(str));
    return span;
}

function button (name, click, type = '', icon = '') {
    let btn = document.createElement('button');
    btn.classList.add('btn');
    btn.classList.add('btn-' + type);

    if (icon) {
        let i = document.createElement('i');
        i.className = icon;
        btn.appendChild(i);
        btn.appendChild(text(' '));
        btn.classList.add('btn-icon');
    }
    btn.addEventListener('click', click);
    btn.appendChild(text(name));
    return btn;
}

function toggleClass(el, selector, className) {
    if (el instanceof Array) {
        el.forEach(e => toggleClass(e, selector, className));
        return ;
    }

    if (el) {
        if (selector) {
            toggleClass(el.querySelectorAll(selector), null, className);
            return ;
        }

        el.classList.toggle(className);
    }
}

addEventListener('DOMContentLoaded', function() {
    var topics = document.getElementById('topic_list');
    var style = document.createElement('style');
    style.textContent = `
.moe-jixun-container
{
position: fixed;
left: .5rem;
bottom: .5rem;
}

.moe-jixun-container > .btn+.btn,
.moe-jixun-container > span
{
margin-left: .3rem;
}

.moe-jixun-container > span
{
background: #efe;
padding: 2px 1em;
font-weight: bold;
}

.btn {
background: white;
border: 1px solid black;
padding: .3rem 1rem;
border-radius: 5px;
box-shadow: 2px 2px 5px #f3f3f3;
}

.selected td,
.selected th,
table.selected.tablesorter tbody tr.even td,
table.selected.tablesorter tbody tr.odd td
{
background: lightgreen !important;
}
`;
    if (topics) {
        console.info('[%s]: 找到列表，开始绑定事件...', APP_NAME);
        topics.addEventListener('click', function (e) {
            let p = e.target;

            while (p) {
                if (p.tagName === 'A') {
                    // ignore
                    return ;
                } else if (p.tagName === 'TR') {
                    e.preventDefault();
                    e.stopPropagation();

                    toggleClass(p, null, 'selected');
                    return;
                }

                p = p.parentNode;
            }
        });

        let btnContainer = document.createElement('div');
        btnContainer.className = 'moe-jixun-container';
        btnContainer.appendChild(button('拷贝所选磁力', function (e) {
            let anchors = topics.querySelectorAll('.selected a.arrow-magnet');
            let urls = Array.prototype.map.call(anchors, anchor => anchor.href);

            let dummy = document.createElement('textarea');
            dummy.value = urls.join('\n');
            document.body.appendChild(dummy);
            dummy.select();
            document.execCommand('copy');
            document.body.removeChild(dummy);

            let notice = span('已复制!');
            btnContainer.appendChild(notice);
            setTimeout(function () {
                btnContainer.removeChild(notice);
            }, 1500);
        }, 'copy'));

        btnContainer.appendChild(button('选深色', function (e) {
            toggleClass(topics, 'tr.even', 'selected');
        }, 'copy'));
        btnContainer.appendChild(button('选浅色', function (e) {
            toggleClass(topics, 'tr.odd', 'selected');
        }, 'copy'));

        document.body.appendChild(btnContainer);
        document.body.appendChild(style);
        console.info('[%s]: 就绪。', APP_NAME);
    } else {
        console.info('[%s]: 未找到下载列表，如果误报请联系作者修正。', APP_NAME);
    }
});