// ==UserScript==
// @name         磁力快显
// @author       zxf10608
// @version      4.0
// @homepageURL  https://greasyfork.org/zh-CN/scripts/397490
// @icon      	 https://cdn.jsdelivr.net/gh/zxf10608/JavaScript/icon/magnet00.png
// @description  在磁力宝、BTSOW、ØMagnet、磁力狗等磁力搜索引擎的搜索列表增加磁力链接显示，方便快速下载资源。
// @require      https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.min.js
// @include      *://clb*.*
// @include      *://clg*.*/search*
// @include      *://www.btmov*.*/so/*
// @include      *://*mag.net/search*
// @include      *://btsow*/search/*
// @include      *://www.*yuhuage*.*/search/*
// @connect      *
// @grant        unsafeWindow
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_openInTab
// @grant        GM_notification
// @grant        GM_setClipboard
// @grant        GM_xmlhttpRequest
// @grant        GM_registerMenuCommand
// @grant        GM_unregisterMenuCommand
// @run-at       document-start
// @license      GPL License
// ==/UserScript==

(function() {
    'use strict';
    if(document.title.includes('磁力宝')){
        unsafeWindow.alert = () => console.log('已阻止弹窗');
    };
    
    $(document).ready(function(){
        // 菜单注册逻辑
        const toggleNotification = () => {
            const isOpen = GM_getValue('open');
            GM_registerMenuCommand(isOpen ? '关闭复制弹窗通知' : '开启复制弹窗通知', () => {
                GM_setValue('open', Number(!isOpen));
                location.reload();
            });
        };
        toggleNotification();

        // 公共样式常量
        const MAGNET_STYLE = 'z-index:9123456789;display:inline-block;cursor:pointer;margin:0 5px 2px;'
            + 'border-radius:50%;border:0;vertical-align:middle;outline:none!important;'
            + 'padding:0!important;height:20px!important;width:20px!important;';

        // base32转换函数
        const base32To16 = str => {
            if(str.length % 8 !== 0 || /[0189]/.test(str)) return str;
            return [...str.toUpperCase()]
                .map(c => (c.charCodeAt(0) < 65 ? c.charCodeAt(0)-24 : c.charCodeAt(0)-65).toString(2).padStart(5,'0'))
                .join('')
                .match(/.{1,4}/g)
                .map(bin => parseInt(bin,2).toString(16))
                .join('')
                .toUpperCase();
        };

        // 创建磁力图标函数
        const createMagnetIcon = hash => {
            const magnetLink = `magnet:?xt=urn:btih:${hash}`;
            return `<img src="https://cdn.jsdelivr.net/gh/zxf10608/JavaScript/icon/magnet00.png" 
                     class="mag1" 
                     href="${magnetLink}" 
                     title="识别到磁力链接，左键打开，右键复制\n${magnetLink}" 
                     style="${MAGNET_STYLE}">`;
        };

        // 磁力链接检测逻辑
        const processLinks = () => {
            $('a:not([href^="magnet:"])').each(function() {
                const link = $(this).attr('href') || '';
                const hashMatch = link.match(/(?:^|\/|&|[-.?=:])([a-fA-F0-9]{40})(?!\w)/) 
                               || link.match(/\/([a-zA-Z2-7]{32})$/);
                
                if(hashMatch) {
                    let hash = hashMatch[1];
                    if(hash.length === 32) hash = base32To16(hash);
                    $(this).attr('target', '_blank').append(createMagnetIcon(hash));
                }
            });
        };

        processLinks();

        // 异步加载逻辑
        if($('.mag1').length < 1 && !document.title.includes('磁力宝')) {
            const magnetCall = href => new Promise((resolve, reject) => {
                GM_xmlhttpRequest({
                    method: 'GET',
                    url: href,
                    onload: ({status, responseText}) => status === 200 ? resolve(responseText) : reject(),
                    onerror: reject
                });
            });

            const magnetEl = $('h3 a[href!="/"], li a[href!="/"], td a[href!="/"], dd a[href!="/"]');
            magnetEl.attr({target: '_blank', style: 'display:inline-block;'});

            const maxRequests = Math.min(magnetEl.length, 20);
            const requests = Array.from({length: maxRequests}, (_, i) => {
                const link = (magnetEl.eq(i).attr('href') || '').replace(/^\//, location.origin + '/');
                return magnetCall(link).then(html => {
                    const magnetLink = html.match(/href="(magnet.{54})/)?.[1];
                    magnetLink && magnetEl.eq(i).after(createMagnetIcon(magnetLink.split(':').pop()));
                    return magnetLink;
                });
            });

            Promise.allSettled(requests).then(results => {
                const successCount = results.filter(r => r.status === 'fulfilled' && r.value).length;
                console.log(`成功加载磁力链接：${successCount}/${maxRequests}`);
            });
        }

        setTimeout(function(){
            if($('.115offline').length>0){
                $('.mag1').remove();//隐藏图标
            };
        },800);
    
        $('body').on('contextmenu click','.mag1', function(e){
            var link=$(this).attr('href')
            if(e.type == 'click'){//左键 
                GM_openInTab(link,false);
            }else{//右键
                GM_setClipboard(link);
                if(GM_getValue('open')==1){
                    GM_notification({
                        title:'磁力快显：',
                        text:'磁力链接复制成功！',
                        timeout:2000,
                    });
                };
                console.log('磁力链接复制成功：\n'+link);
            };	
            return false;
        });
        
    });
})();